Despite this usage, most of us know that randomness has something to do with probability, and that it often implies a lack of conscious intentionality. But what do mathematicians and scientists mean when they say something is random? Can a random process lead to an ordered, even predictable outcome? Is there evidence that God makes use of random processes to fulfill his creative purposes?

These are big questions, and we won’t address them all today. But I think randomness is an important topic to cover for two reasons: 1) it is integral to many processes in biology (and math, physics, chemistry, etc.), and 2) it is commonly misunderstood to be incompatible with Christianity.

As I said above, most of us know that randomness has something to do with probability. If you pick a card “at random” from a shuffled deck, you have a small probability of drawing an ace (4 out of 52, or a 7.7% chance). If you flip a coin, you have an equal probability of getting heads or tails.

Randomness also seems to imply a lack of intentionality or purposefulness. After all, you might hope for an ace when you draw a card, but you can’t choose one on purpose. You might call heads when you flip a coin, but you can’t know beforehand what the outcome will be. Thus the outcome is indeterminate, but is it purposeless? Not necessarily. Indeterminacy simply means the result cannot be predicted from the outset.

It should be noted that indeterminacy does not imply that God does not have foreknowledge of future events. Christians ought not to be uncomfortable with the idea of God interacting with his creation through chance. We often describe a seemingly-random (i.e. unplanned by us) sequence of events as being “providential,” or planned by God.

In biology, it is very hard or impossible to calculate precise probabilities for most processes, so when we say a process is random, we typically mean it is extremely unpredictable. Eventually we will discuss randomness within biological evolution, but first we must consider some simpler processes, like the self-assembly of a virus.

Viruses are remarkably efficient entities. Coiled tightly within a protein-based shell is a small amount of DNA needed for self-replication. The shell, called a capsid, is made of many repeating protein subunits and is therefore highly symmetrical (see figure). Important biomedical insights have certainly been gleaned from structural studies of viruses, but viruses also teach us about the emergence of order from non-order.

The virus life cycle has four main steps: 1) enter a host cell, 2) hijack the cell’s replication and translation machinery to make many copies of itself, 3) assemble into many virus particles, and 4) exit the cell to invade another host.

When I first learned about this process, I found it very hard to believe it just “happens.” The idea that a bunch of molecules bumping into each other inside a crowded cell could spontaneously assembly into a fully-functional virus seemed a bit far-fetched. Many viral capsids have over 100 protein subunits that must interact with each other in just the right way, or it won’t work. Surely there must be something driving this process, right?

There is! Random motion. I had to see it to believe it. I distinctly remember sitting in class during my first year of graduate school when the professor demonstrated self-assembly of a virus using a 3D model as shown in the following video. In less than 30 seconds, you can watch a jumbled heap of proteins become a beautifully ordered structure.

As the narrator explains, sub-assemblies form and break apart en route to the most stable structure, the full capsid. As the sub-assemblies begin to form, further associations with free subunits become more favorable and as a result occur rapidly, while the final steps may take considerably longer. While the subunits in the model are rigid, in reality the proteins take on multiple conformations, allowing the capsid to “breathe.”

Amazing as it is, the system we just considered—one virus capsid in a jar—is pretty simple. One wonders how self-assembly can happen in a crowded cell, where there are countless other molecules diffusing around, potentially getting in the way. We can’t directly see how it happens in a cell, but we can reconstitute the process in a test tube using different combinations of constituent molecules.

Consider two viruses, where each protein subunit in one virus is the mirror image of the corresponding subunit in the other. Putting the two viruses together by hand would be pretty tricky, because the constituent parts look so similar. But random motion can do the job in short order:

From this model, we can see clearly, in real-time, how distinct complex structures can arise from their parts randomly interacting with one another. Many large viruses also use special scaffolding proteins to assist in the assembly process, and some even use their own genomes as a scaffold. In addition, two closely-related viruses that happen to infect the same cell can exchange parts to create a new virus. This is one way viruses can evolve quickly to evade the host’s immune system.

Here we have seen how viruses demonstrate a principle inherent in God’s world—that order can emerge out of chaos from random processes. In my next post, we will look at some other biological processes that make use of—rather, depend on—randomness. This will set the stage for us to see that such processes can not only assemble a structure within seconds or minutes, but also generate complex, information-bearing molecules over billions of years. Even though the freedom inherent in nature sometimes produces unintelligently-designed structures (like viruses, which can kill us), we see that God has made, and continues to oversee by his providence, a good creation that, at least in part, is capable of creating itself.

Next weekend, we’ll continue this series about randomness and God’s divine will. Up next: how God created the body to heal itself, and how can random mutations can be both harmful and benign.

Understanding John Polkinghorne: Theology of Nature

John Polkinghorne’s interest in natural theology is important, but what really sets him apart from most others is that he combines it with an equally strong interest in theology of nature, which is not the same thing. Where natural theology involves, “metaquestions about the pattern and structure of the physical world,” theology of nature involves, “metaquestions about how its historical process is to be understood.” Rather than “looking to the physical world for hints of God’s existence,” we look “to God’s existence as an aid for understanding why things have developed in the physical world in the manner that they have.” (Belief in God in an Age of Science, p. 13)

On this front, Polkinghorne advances a strongly Christocentric theology of creation, stressing Jürgen Moltmann’s notion of The Crucified God . In the context of Polkinghorne’s theology of nature, the point is that the Creator is the crucified and resurrected second person of the Trinity. Since I devoted a column to this before, I won’t say more here, except to alert readers to the singular importance this particular idea has for him—especially when facing the problem of suffering. “The insight of the Crucified God lies at the very heart of my own Christian belief, indeed of the possibility of such belief in the face of the way the world is.” (Belief in God in an Age of Science, p. 44)

Situating John Polkinghorne: The Resurrection of Jesus

Many Christians today see science as posing dangerous threats to their faith, challenging their understanding of the Bible and undermining core tenets such as the bodily Resurrection of Jesus, the historical basis on which the Christian faith stands or falls. “Evolution” is often identified as the problem, but the real danger is unbridled naturalism. A commitment to naturalistic methods, known as “methodological naturalism,” (MN) has been an integral part of science and medicine since the ancient Greeks. Those methods have been highly successful at producing a coherent, often very convincing picture of nature and the history of nature.

Advocates of Intelligent Design and some other Christians reject MN, but many Christians who work in the sciences and related fields (such as engineering, medicine, or the history and philosophy science) support MN as a properly grounded and properly limited way of understanding reality. In their view, a robust Christian faith is consistent with a commitment to MN, provided that the limits of scientific inquiry are not simply equated with the limits of rationally grounded belief. Polkinghorne fits squarely in this category.

To understand more clearly where Polkinghorne lies on the larger landscape of science and religion, let’s consider his approach to the Resurrection. Many contemporary thinkers, including some theologians and clergy, believe that “science” has somehow made it impossible to believe in the Resurrection, the deity of Jesus, and even belief in the transcendent God of the Bible.

A prime example is John Shelby Spong, a retired Episcopalian bishop whose books have sold more than one million copies. Spong sees the bodily Resurrection as a figment of the disciples’ imaginations, a vestige of a theism that now we must throw away like a threadbare suit of clothes. For Spong, Christians today need to go "beyond theism" throwing out the baby of divine transcendence—the fundamental truth of monotheism—along with the bath water of the credulity and mythology of the pre-modern authors of the Bible and the ecumenical creeds. Spong’s message is that “Christianity must change or die,” and all in the name of “science.”

As Spong likes to say, his work is very controversial, and not just among rank-and-file Christians. Scholars have also railed against him. “I have been attacked in books from the religious right by such people as Alistair MacGrath [whose surname is actually spelled McGrath], N.T. Wright, and Luke Timothy Johnson,” he complains (Why Christianity Must Change or Die, p. xvi).

I understand (with much sadness) that we live in a highly polarized age. Nevertheless, it’s difficult for me to grant much credibility to an author who identifies McGrath, Wright, and Johnson as representatives of the “religious right.” Indeed, if anyone here is distorting the news it is Spong, not they. As the (late) great Catholic biblical scholar Raymond Brown once observed, “I do not think that a single NT [New Testament] author would recognize Spong’s Jesus as the figure being proclaimed or written about.” (Birth of the Messiah, note 321 on p. 704)

Matthias Grünewald, The Resurrection (a wing of the
Isenheim Altarpiece, ca. 1515), Unterlinden Museum,
Colmar, France

Polkinghorne certainly understands science far more than Spong does, and his conclusions about the implications of science for Christian beliefs are markedly different. With respect to the Resurrection, he is basically on the same page with his friend Wright, whose profound book, The Resurrection of the Son of God, he cites with appreciation. Belief in the Resurrection is well supported by the evidence, and the Resurrection, itself, is “the pivot on which the claim of a unique and transcendent significance for Jesus must turn.” Considering authors like Spong (although he does not explicitly name him), he adds, “it would be a serious apologetic mistake if Christian theology thought that operating in the context of science should somehow discourage it from laying proper emphasis on the essential centrality of Christ’s Resurrection, however counterintuitive that belief may seem in the light of mundane expectation.” (Theology in the Context of Science, pp. 135-6)

Amen.

Looking Ahead

This is the Easter season, and I’ll return in a couple of weeks to begin examining Polkinghorne’s approach to the Resurrection more fully, using excerpts from the chapter on “Motivated Belief” from his recent book, Theology in the Context of Science.

References

Raymond E. Brown, Birth of the Messiah: A Commentary on the Infancy Narratives in the Gospels of Matthew and Luke. (1992).

John Polkinghorne, Belief in God in an Age of Science (1998).

John Polkinghorne, Theology in the Context of Science (2009). My review for First Things online is here.

John Shelby Spong, Why Christianity Must Change or Die (1998).

If we want to talk about God, creation, and science, where should we start? It’s easy to begin with conflict. We can claim that the rise of modern science is the root of cultural decline. We can dive right into some of the contentious questions about how the Bible and science relate to each other. We can adopt a posture of defensiveness about what Christians believe and the ways in which some people think science threatens our beliefs.

But this is not a good place to start. The place to start is the place where all good Christian theology must start: with God.

“In the beginning, God….” These are the first words of the Bible. “I believe in God….” These are the first words of the Apostle’s Creed. If we want to develop wisdom and understanding about the relation between God and creation, then we need to start with the source of everything: God.

But how do we know anything about God? And how can we say anything about God? As we go about our daily lives, we can’t converse with God in exactly the same way that we might talk with our families, friends or neighbors. We can’t touch or smell God like a patch of green grass or taste Him like an apple. We can’t see him like an image on our TV screens. In theological terms, there is a sense in which God is “hidden” to our human senses. Many great Christian thinkers, such as Martin Luther, spent a good part of their lives reflecting on the “hiddenness” of God.

It may surprise you to hear God described as “hidden.” Those of us who have been in the Church for a while often are much more familiar with talk of how God has revealed Himself to us. We seem to gravitate towards detailed and systematic explanations of what we think we can know about God. God has, of course, revealed Himself to us – or else there would be very little point in trying to speak about Him. In scripture, in the proclamation of the Church, in the created world, and most importantly, in Jesus Christ, God has made Himself known. So why start with how God is “hidden?”

The very fact that God cannot be directly perceived by our ordinary human senses tells us something important about God and creation. God is “hidden” because He is “other.” God is not a patch of grass, and a patch of grass is not God. God is not an apple, and an apple is not God. God is not a television image or painting or statute, and a television image, painting or statute is not God. God is not a human being, and human beings are not God. God is not matter, the stuff of the created world, and matter is not God.

In theological terms, God is transcendent. “God” and “creation” are not the same thing. This is a basic idea that distinguishes Christian understandings of God from many other philosophies and religions. In fact, this emphasis on God’s transcendence is one important difference between the Hebrew and Christian theologies of creation and the prevailing ideas in the ancient near eastern world of the Biblical writers. It also distinguishes Christian thinking about God and creation from some of the important ideas that are common today.

In many ancient near eastern creation myths, the material creation was derived from the body of a god. In the Babylonian Enuma Elish, for example, the female god Tiamat is killed by another god, Marduk, and the two halves of Tiamat’s corpse become the earth and the skies. In Egyptian mythology, many of the gods were related to material entities. Ra, for example, was the god of the Sun, Nut was god of the sky, and Geb was god of the earth. These stories reflect an ontology in which there is no sharp distinction between the gods and the material world. The Biblical literature, in contrast, separates the nature and being of the creator-God from the nature and being of His creation.

In contemporary popular Western culture, two of the most common ideas about God and creation really are very old notions dressed up in new clothes.

One is a thought you might hearon TV talk shows, in self-help books, or in popular music or movies: that “everything is one” or that “God is in everything and everyone.” This usually sounds like “pantheism” — the notion that God and the world around us really are essentially the same thing. In American popular culture, this often boils down to God becoming the same thing as our own individual selves. How often have you heard a line like this in a song or TV show or movie: “what you’ve been looking for has been right inside yourself all along” or “the most important thing is to find out who you are?”

The truth of God’s transcendence means that the real basis for a meaningful and good life lies outside of our selves. We are part of creation, and therefore we are not God. We must look outside ourselves to find the source of life. Before we become too critical here, we need to preview for a moment another important theme in Christian theology: that God is also immanent. It is true that creation is an interconnected system and that God is always present throughout all of creation. It is also true that in our created humanity we are made for an intimate connection with God. It is right to look into ourselves as we seek God. As Augustine described in his Confessions, an honest search of the self should reveal a nature that is not self-sufficient, that is not meant to be alone, that longs for relationship with a beauty and harmony and love that the individual self cannot sustain. Augustine called this a “God-shaped void” at the heart of every person.

Yet we also need to be clear that, while the search may begin within our selves, it must not stop there. God is “other,” so we must continue beyond ourselves, in fact beyond everything we think we see, in order to find Him. And the paradox here is that we can only find the true meaning and purpose of our own selves by going beyond ourselves and finding the God who is other than us and who made us.

The other idea often expressed in our popular culture is that “matter is all there is.” Unfortunately, for some people this idea has become the standard for supposedly “scientific” thinking about the world. But this is not a “scientific” idea at all – it is a metaphysical statement (“metaphysical” just means “beyond the physical”) with roots going back to the ancient Greek Stoics. For many educated people in Western culture, if something cannot be verified with the human senses, it is not “real,” or at least it is not worthy of consideration as a matter of “fact” or “reason.”

There are many reasons why this way of thinking about what counts as truth or knowledge has become so influential. Our modern intellectual, political and social systems were shaped by the period from the seventeenth to eighteenth centuries known as the “Enlightenment.” Even modern Christianity has been tinged in significant ways by Enlightenment thought.

The Enlightenment, of course, was not all bad. It gave us some great gifts, including the contemporary scientific method and the political frameworks, such as the U.S. Constitution, that support the freedoms we now take for granted.

But like many exciting moments in history, the Enlightenment produced some unbalanced perspectives. The ways in which human beings can know things in addition to observation of the tangible world around us were lost. The sorts of intuitions and experiences that human beings throughout history had understood to reach beyond reason were discredited. The thought that a transcendent God might have broken into history to reveal anything about Himself was mostly set aside.

Christian theology has always asserted that because God is transcendent, human observation and human reason are neither the starting point nor the ending point for true knowledge, wisdom and understanding. If matter is not all there is, then our search for truth cannot be limited to the material world alone. In fact, the beginning of knowledge and wisdom is the realization that God is beyond and other than the created world. Again, a word of balance is in order. Human observation and reason do matter, precisely because God created us as part of a world that is in important ways orderly and knowable. The great Christian thinker Anselm said that knowledge is the act of “faith seeking understanding.” “Understanding” – the sometimes difficult process of bringing all our resources, including reason, to bear on the search for truth – depends on and follows “faith.”

God’s transcendence means that the physical world does not represent the limits of what is true and real. Indeed, the physical world is not the beginning or end of what is true and real. The “beginning and end,” the “alpha and omega,” is the God who is beyond all our thoughts and imaginings.

A common argument leveled against the theory of evolution is that scientists have not been able to produce the expected transitional fossils that show the change of one species into another. If evolution were true, wouldn’t there be instances of clear intermediary species, like, for example, a species that was half whale and half hippo to show the transition between those two? In this BioLogos podcast, Kelsey Luoma addresses this misconception about what a transitional fossil actually is. Rather than a mix between two related species, transitional fossils point back to the common ancestors that modern species share. The fact is that the number of transitional species is massive and it grows with each passing year. Given the rarity with which organisms are actually fossilized, the amazing thing is actually the completeness of the fossil record, not its incompleteness. The transitional species story strongly supports, and certainly does not disprove, evolutionary theory. ¹

1. To hear the full audio clips which have been referenced go to:

• Rational Response Debate with Kirk Cameron (from Way of the Masters)
• Behind the Scenes with Dr. Neil Shubin (from Cincinnati Museum Center)
• Mark Norell Publishes New Archaeopteryx Findings (from American Museum of Natural Sciences)
• Texas A&M Professor Discusses Findings of Autralopithecus Sediba and its Relationship to Humans (from Texas A&M University)
• Intro/outro music composed by Martin Minor (Minor2Go).

An audio only version of the podcast can be downloaded here.

Showing Christian schoolteachers that one can be a believer who embraces the Bible as God’s inspired Word and evolution as His creative process has always been a mission of BioLogy by the Sea, the accomplishment of which is never guaranteed. During the first few days, several participants expressed doubt that their faith could be compatible with evolutionary creation. However, as the week came to a close, some of those who had previously denied compatibility seemed to be much more considerate of the notion—if not fully accepting of the idea altogether. If you’ve ever doubted evolution yourself, then you know that such acceptance is no small feat. There are numerous theological and philosophical barriers that must be dealt with, and to think that this could occur in the span of just one week is pretty amazing. Then again, the program had some pretty amazing guest speakers and activities—the most significant of which occurred throughout the week: prayer and worship to the One we all serve, our Lord and Savior Jesus Christ.

While these times served to glorify God and nurture participants’ souls, the week was also filled with activities designed to nurture participants’ minds through the study of biblical passages and biological content. In addition to graduate level courses and accompanying labs in either biodiversity or developmental biology, participants went on field trips to the intertidal zone, the Natural History Museum of Los Angeles County, the La Brea Tar Pits, and the Gaslamp Quarter. Furthermore, presentations given by Dr. Gregg Davidson, professor of geology and geological engineering from the University of Mississippi, and Dr. Mary Schweitzer, paleontologist and associate professor of marine, earth and atmospheric sciences from North Carolina State University, offered key insights into their fields and demonstrated how the tenants of both are based on evidence rather than conjecture.

In short, this year’s BioLogy by the Sea offered another comprehensive look at what it means to be a Christian who accepts the conclusions of mainstream science—not at the expense of our faith in God or His Word, but in light of it. We can only hope that these teachers, who spent an entire week of their summer break with us, left with not only a greater sense of oneness as the body of Christ, but also found new ways to engage their students in matters of science and faith—another facet of the program’s mission. After all, the first step in protecting the next generation from the faith crisis that many seem to experience after they learn about evolution from a secular perspective is showing that it need not be an either-or situation. It’s also an important part of ensuring that Christian young people can rise to the forefront of global scientific research.

These facts persist in the face of educational guidelines in most states that mandate the teaching of evolution, court decisions that have declared the teaching of creationism as unconstitutional and having “no scientific merit or educational value as science [because it] is simply not science” (McLean v. Arkansas Board of Education, 1982), thousands of scientific papers and books that document evidence for evolution, direct observations of evolution, and countless endorsements of evolution (and rejections of creationism) by professional scientific organizations. Decades of costly science education reform have not reformed popular acceptance of evolution: most of the public continues to see religion and mainstream science as diametrically opposed, and when presented with that choice, most will choose the supernatural over science, even when it means rejecting the foundations of modern biology. Why?

Many factors – for example, the media and religion -- influence people’s beliefs about the evolution and creationism, as well as their acceptance of science. One of these influences is education. What are students taught about evolution and creationism?

Evolution and Creationism in High School Biology Courses

Students have widely variable introductions to evolution in their high school biology courses. Although most states have educational guidelines that mandate the teaching of evolution, only about 70% of students entering college report that their high school biology courses included evolution (in some form) and not creationism. Although educational guidelines provide important support for teachers wanting to teach evolution, these guidelines are irrelevant to many biology teachers and administrators.

Approximately 20% of students are taught neither creationism nor evolution in their high school biology courses (Moore, 2007). Another “cautious 60%” of biology teachers want to avoid controversy, and neither advocate evolution nor explicitly endorse nonscientific alternatives (Berkman and Plutzer, 2011). Even when teachers do teach evolution, they often cover the topic in a trivial or disparaging way (Bandoli, 2008, and references therein), thereby perpetuating a cycle of ignorance reinforced by popular opinion (Berkman and Plutzer, 2011). When these students arrive on college campuses, they are predisposed to remain skeptical of evolution, for their perceptions and prior knowledge strongly influence their learning. This is especially important for evolution, for many students view evolution as negative and undesirable (Brem, Ranney, and Schindel, 2003) and sense an “overlap of some ideas that the theory [of evolution] advocates with other social, epistemological, and religious beliefs” (Hakoyem and BouJaode, 2008).

The Creationists Down the Hall

Most Americans reject evolution, and most biologists have grown accustomed to headlines such as “Four in 10 Americans Believe in Strict Creationism” (Gallup, 2010) and “In U.S., 46% Hold Creationist View of Human Origins” (Gallup, 2012). However, most biologists are less familiar with the fact that creationism is thriving among undergraduate biology majors (Verhey, 2005; also see above), biology graduate students (Gregory and Ellis, 2009), and former students who have become biology teachers (Berkman, Pacheco, and Plutzer, 2008; Moore, 2007, and references therein).

Despite their training, many biology teachers are creationists. Indeed, fully one-sixth of biology teachers are young-Earth creationists (Berkman, Pacheco, and Plutzer, 2008), and a presentation of young-Earth creationism as legitimate science would presumably confuse students about the basic tenets of science in general, and of evolution in particular. Because teachers’ personal views about a subject affect their teaching of the subject (Carlesen, 1991; Grossman, 1989), and because teachers with strong religious convictions accept evolution less often than their less-religious peers (Trani, 2004), it is not surprising that many of today’s biology teachers explicitly teach creationism in their biology courses. Although few biology teachers in public schools teach creationism without mentioning evolution, 20-25% of today’s biology teachers teach evolution and creationism in their courses (Moore, 2007, and references therein). Although a handful of creationism-based biology teachers are confronted for their malpractice (e.g., Rodney LeVake; see Moore, 2004), most are tolerated — and sometimes even encouraged — to teach creationism, possibly because of pressure from the public and administrators to ignore evolution and/or teach creationism (Cavanagh, 2005, Verango and Toppo, 2005). As Don Aguillard, the lead plaintiff in Edwards v. Aguillard (1987) noted in 1999 (Moore, 1999), “Creationism is alive and well among biology teachers.”

When Biology Teachers Teach Creationism, What Do They Teach?

When biology teachers teach creationism, they usually present only a particular version of the Judeo-Christian creation story. Moreover, these stories are often presented as a scientific alternative to evolution (Moore, 2008), despite the fact that creation science has “no scientific or educational value as science [because it] is simply not science” (McLean v. Arkansas Board of Education, 1982). Relatively few biology teachers who teach creationism present it as religious idea, philosophical idea, or as part of a survey of several religions (Moore, 2008). They do not “teach the controversy,” in other words, but present the relationship between modern evolutionary biology and their faith as one of self-evident conflict, assuming (and teaching) that their version of creationism is the only true alternative.

Does It Matter When Biology Teachers Teach Creationism?

Yes—high school biology courses have a strong and lingering impact on students’ views of evolution and creationism (Moore and Cotner, 2009). Students who were taught creationism in high school know significantly less about evolution when they enter college than do students who were taught evolution in high school. Similarly, students who claimed that most of their knowledge of evolution came from non-school sources (e.g., the media, church) knew less about evolution than did students who claimed that their primary source of knowledge about evolution was their high school biology class (Moore, Cotner, and Bates, 2009).

Solving the Problem?

Several studies have claimed that additional evolution-related training will help improve the teaching of evolution in high schools. We are not nearly as optimistic. Although workshops and short-courses presumably help and encourage teachers willing to consider teaching evolution, focused instruction about evolution often does not affect students’ or teachers’ acceptance of evolution (Alters and Nelson, 2002; Chinsamy and Plaganyi, 2008). Moreover, these workshops will not reach creationism-based biology teachers who are dedicated to substituting their religious beliefs for science in their classes.

In our experience, these teachers rarely attend such workshops, even if they are paid to do so, and even then their acceptance of evolution is unaffected. After all, these teachers have access to and know the evidence for evolution – it’s widely available, including in the textbooks that they adopt and use in their classes – and they are not convinced by that evidence. We know of no evidence that the availability of such solely science-focused workshops, seminars, and other forms of evolution-related education will significantly affect what creationism-based biology teachers teach. Since the impediments to better teaching of evolution are primarily the philosophical and religious views of biology teachers, programs that do not address the more personal, “non-science” issues of science educators directly and effectively are likely to have little impact on what students learn in high-school biology classrooms. Instead, if further fact-based instruction in evolution is part of the answer, it is likely to be most effective with young children, who are developmentally primed to seek explanations for natural phenomena. However, evolution instruction is essentially absent prior to high-school biology; by high school, a student’s teleological demands have likely been met by supernatural explanations, creating a cycle of adults who know little about evolution and teach creationism-flavored biology.

Creationism has long been popular among biology teachers (Moore, 2007), and there is no evidence that improved state educational standards, proclamations by professional organizations, and decades of science education reform have made much difference. As John Scopes commented almost 50 years ago, “I don’t think the world changes very rapidly” (Anonymous, 1966).

View Literature Cited

Part of the BioLogos mission, then, is to show how all things hold together in Christ—to show how a Christian worldview integrates the knowledge we have of God through the Scriptures with the knowledge we have of God through the other areas in which he reveals himself as Creator and Redeemer. Our website contains a wealth of Christian scholarship in a wide range of fields—from biology, to cosmology, to mathematics, to Biblical studies, to history, to theology—all demonstrating that the best contemporary science is compatible with Biblical Christian faith. But today we introduce a new tool—the BioLogos Navigator—to make these posts more accessible, and to show how they inter-relate (see sidebar on the right).

Modeled on the astrolabes that early astronomers and sailors used to orient themselves under the heavens, our Navigator makes the cross of Christ the starting point by which we understand the cosmos. Each of the four arms of the cross represents one of the domains of knowledge and experience through which God reveals himself to the world: Scripture, the Church, Nature and Culture. These domains are not in opposition to each other, but are complementary and inter-related areas through which we can recognize God at work in the world. Linking these four domains is a network of specific topics relevant to the science and faith conversation. Their arrangement suggests how each relates to the four domains but also to teach other. Clicking on an individual topic tag highlights not only that topic, but other topics that are linked to it—sometimes in unexpected ways.

Clicking a topic tag a second time takes you to the Topic Landing page: a curated selection of the best resources on that subject from the BioLogos archives. (The image above shows the Christianity & Science—Then and Now Landing page, complete with Navigator and highlighted tags.) At the bottom of each page is a link to our Resource Finder, where you can investigate additional materials on that topic, as well. By exploring the relationships between the topics on the Navigator itself, and by delving deep into each topic via the resources presented on the landing pages, readers can focus on specific aspects of the harmony between science and Christian faith while also getting the wide view of God’s providential work in all things in the heavens and on the earth.

In the coming days and weeks, the BioLogos Navigator will be more fully integrated into the rest of the site, accessible directly from the Forum homepage and from the Resources dropdown list at the top of every page. We’ll also be including features that help place each blog post on the “knowledge map” defined by the domains and topic tags. Finally, the Topic Pages will also be periodically updated with the latest and best new materials in each topic. In the meantime, you can access the Navigator by clicking anywhere on the small image in the sidebar, above, and find a link to this post at the upper right corner of our homepage. So take some time to explore our site with this new tool, which we think will to help orient our readers in the science and faith conversation, while always pointing to Jesus, the Christ, through whom all things were made.

The first video, “10 Questions with Katherine Hayhoe”, introduces the scientist in a brief and lighthearted interview. Hayhoe is presented with 10 questions concerning her personal life and beliefs. When asked, she explains that one thing people should know about Christianity is that having a relationship with the God of the universe is one of the most incredible experiences that a person can have. As the video unfolds, the viewer quickly begins to realize that, despite her unique profession of two seemingly incompatible beliefs, Hayhoe is a remarkably sane and “normal” individual. Her role model, she explains, is her father-- the person who first introduced her to science and showed her that it could be “really cool”. On a more serious note, the scientist admits that being both a scientist and a Christian can be difficult. The most frustrating thing about her position, she says, is the amount of disinformation which is targeted at her very own Christian community.

In the second video, “Climate Change Evangelist”, Katharine Hayhoe delves into deeper discussion of the perceived conflict between climate change and Christian faith. She explains that admitting her identity as a Christian scientist can be uncomfortable. Since evangelicals are the targets of much disinformation concerning science in general -- and specifically the science surrounding climate change -- many people in the church have a misguided view of the subject and do not look kindly at her career choice. One woman encountered by Hayhoe at a church in Texas, for example, believed that global warming was a lie taught in schools to mislead her children. In an effort to realign misguided views like these, Katharine Hayhoe and her husband wrote a book addressing the deep-rooted emotions often associated with climate change. People fear that addressing the climate issue will bring forth changes in the economy and uproot their way of life. However, Hayhoe encourages her viewers to act out of love, as the Bible calls us to do, rather than out of fear. Acting out of love inspires us to consider the poor and disadvantaged people around the globe when we respond to the reality of a changing climate.

In the final segment of this three part video montage, Hayhoe addresses the question of what climate change means. Specifically, she is concerned about how global warming affects people on a personal level. While global warming generally brings to mind melting ice caps and polar bears, its implications are far more widespread, affecting the lives of everyone around the world- from cotton farmers in Texas to public health workers in Chicago. If nothing is done to change current emission levels, the number of days per year which exceed 100 degrees Fahrenheit, for example, will begin to increase dramatically, and if emissions are increased, many areas will even develop extreme conditions like those seen currently in Death Valley. Hayhoe’s goal is to demonstrate clearly that the only way to preserve the world for future generations is to significantly reduce dependence on inefficient means of getting energy and instead transition to cleaner renewable energy sources.

Editor's Note: These videos first appeared on the Nova program "The Secret Life of Scientists & Engineers".

The script was written by biology student Joy Walters, with help from BioLogos president Darrel Falk.

As we discussed yesterday, the most dramatic innovation yet observed in the E. coli Long Term Evolution Experiment (LTEE) was the ability, acquired by one of the twelve cultures, to use citrate as a carbon source under aerobic conditions. When we last discussed the LTEE in 2011, we noted what was known then about the mutations that eventually combined to produce the Cit+ trait:

Tracking down the nature of this dramatic change led to some interesting findings. The ability to use citrate as a food source did not arise in a single step, but rather as a series of steps, some of which are separated by thousands of generations:

1. The first step is a mutation that arose at around generation 20,000. This mutation on its own does not allow the bacteria to use citrate, but without this mutation in place, later generations cannot evolve the ability to use citrate. Lenski and colleagues were careful to determine that this mutation is not simply a mutation that increases the background mutation rate. In other words, a portion of what later becomes “specified information for using citrate” arises thousands of generations before citrate is ever used.
2. The earliest mutants that can use citrate as a food source do so very, very poorly – once they use up the available glucose, they take a long time to switch over to using citrate. These “early adopters” are a tiny fraction of the overall population. The “specified information for using citrate” at this stage is pretty poor.
3. Once the (poor) ability to use citrate shows up, other mutations arise that greatly improve this new ability. Soon, bacteria that use citrate dominate the population. The “specified information for using citrate” has now been honed by further mutation and natural selection.
4. Despite the “takeover”, a fraction of the population unable to use citrate persists as a minority. These cells eke out a living by being “glucose specialists” – they are better at using up glucose rapidly and then going into stasis before the slightly slower citrate-eaters catch up. So, new “specified information to get the glucose quickly before those pesky citrate-eaters do” allows these bacteria to survive. As such, the two lineages in this population have partitioned the available resources and now occupy two different ecological niches in the same environment. As such, they are well on their way to becoming different bacterial species.

As such, we noted three distinct steps observed by the Lenski group: steps they call potentiation, actualization, and refinement. Potentiation mutations do not themselves result in the ability to use citrate under aerobic conditions, but they are necessary for it to appear later. Actualization is the mutation that first brings about the Cit+ trait, though, as we noted, this step produced only a very weak Cit+ effect. This nascent ability, however, then undergoes refinement through additional mutations and selection to give the final, robust Cit+ trait observed in the culture.

While some things were known about these steps when the Lenski group last published on this topic (in 2008), the precise details remained unclear. What was needed was a complete characterization of the Cit+ bacteria through whole-genome sequencing to help indentify the changes. These long-awaited results are now available in a new paper published last month by the Lenski group, and they shed light on all three stages of the process.

Lights, camera, actualization

The key step - and the one of greatest interest - is of course actualization: the mutation that converted a Cit- cell to a Cit+ one. This is also one of the easiest steps to study, since the mutation provides the cell with a new feature that can be detected experimentally. Though E. coli cannot use citrate as a carbon source in the presence of oxygen, they are capable of using citrate in anoxic conditions (i.e. when oxygen is absent). To do so, they employ a protein that imports citrate in to the cell while at the same time exporting a compound called succinate. Since this protein is already present in the E. coli genome, it was long suspected that a genetic regulatory change that turned on its production in the presence of oxygen could be the key innovation that produced the first Cit+ bacterium in the culture. As we discussed yesterday, Behe notes that this change could result from a loss-of-FCT or a gain-of-FCT mutation:

“If the phenotype of the Lenski Cit+ strain is caused by the loss of the activity of a normal genetic regulatory element, such as a repressor binding site or other FCT, it will, of course, be a loss-of-FCT mutation, despite its highly adaptive effects in the presence of citrate. If the phenotype is due to one or more mutations that result in, for example, the addition of a novel genetic regulatory element, gene duplication with sequence divergence, or the gain of a new binding site, then it will be a noteworthy gain-of-FCT mutation.”

Interestingly, the actualization mutation was indeed a change of regulation of the anoxic citrate / succinate transporter, and it arose through a gain-of-FCT mutation. The mutation turned out to be a side-by-side duplication of the citrate / succinate transporter gene, as well as portions of two genes on either side of it. This imprecise duplication placed a partial fusion of these flanking genes next door to one of the copies of the citrate / succinate transporter gene. This brought the copy under the control of promoter sequences derived from of one of its neighbors, a gene that is active when oxygen is present. The resulting product was a copy of the citrate / succinate transporter gene that was now very weakly expressed in aerobic conditions. Since this is an example of a mutation that duplicates a gene and simultaneously creates a new regulatory element for it (causing significant sequence divergence), this is a clear-cut example of a gain-of-FCT mutation.

Responding to the data

While Behe has not yet, to my knowledge commented on this particular development within the LTEE, one of his colleagues in the Intelligent Design Movement (IDM), microbiologist Ann Gauger, has offered her thoughts. Two themes emerge in her commentary: that the Cit+ trait is “not new”, and that the number of mutations it required were within the bounds set out by Behe and another member of the IDM, structural biologist Douglas Axe:

When is an innovation not an innovation? If by innovation you mean the evolution of something new, a feature not present before, then it would be stretching it to call the trait described by Blount et al. in "Genomic analysis of a key innovation in an experimental Escherichia coli population" an innovation [...]

The total number of mutations postulated for this adaptation is two or three, within the limits proposed for complex adaptations by Axe (2010) and Behe in Edge of Evolution. Because the enabling pre-adaptive mutations could not be identified, though, we don't know whether this was one mutation, a simple step-wise series of adaptive mutations, or a complex adaptation requiring one or two pre-adaptations before the big event.

But does this adaptation constitute a genuine innovation? That depends on the definition of innovation you use. It certainly is an example of reusing existing information in a new context, thus producing a new niche for E. coli in lab cultures. But if the definition of innovation is something genuinely new, such as a new transport molecule or a new enzyme, then no, this adaptation falls short as an innovation. And no one should be surprised.

While Gauger does not speak to the tension between her description of the Cit+ mutation as “not genuinely new” and Behe’s criteria that this should be classified as a gain-of-FCT mutation, it is clear that she views this event as within Behe’s “edge” – i.e. within the bounds of “what Darwinism can do.” Additionally, she sees it as falling within the scope of what is evolutionarily possible as proposed by Axe’s work. In the next installment of this series, we’ll revisit how Behe defines his (claimed) limit of what evolutionary processes can accomplish, with this new evidence in hand. In doing so, a careful examination of the potentiation and refinement phases of the Cit+ transition will be informative.

For further reading:

Blount, Z.D., Barrick, J.E., Davidson, C.J. and Lenski, R.E. (2012). Genomic analysis of a key innovation in an experimental Escherichia coli population. Nature 489; 513- 518.

Michael J. Behe, The Edge of Evolution: The Search for the Limits of Darwinism (New York: Free Press, 2007).

Michael J. Behe (2010). Experimental evolution, loss-of-function mutations, and “The first rule of adaptive evolution”. The Quarterly Review of Biology 85(4); 419-445.

In 1774, the French chemist Antoine Lavoisier replicated the relevant experiments in more controlled ways to demonstrate that mass was conserved during combustion. He also renamed the part of the air that burned 'oxygène.' English scientists resisted the French scientist's new name, not least because the English Priestly had already published his discovery of the gas. 'Oxygen' nonetheless entered the common English vocabulary in part due to one of the first popular science books, The Botanic Garden (1791), which included a poem praising the gas using the preferred French name. By coincidence, this book also promoted some early ideas about biological evolution (specifically, it suggested that sexual reproduction might be important to evolution, which might help to explain the popularity of a book of poems about science). It was written by Erasmus Darwin, the grandfather of Charles Darwin, who first proposed the modern form of the theory of biological evolution in his 1859 book, On the Origin of Species.

150 years later, we are discovering that the lines connecting evolution and oxygen run deeper than the Darwin family tree. We now know, for instance, that for roughly half of the Earth's 4.6-billion-years of history, there was little to no oxygen in the atmosphere. Instead, oxygen entered the atmosphere in two major pulses, with one between 2.4 and 2.2 billion years ago, and another between 0.8 and 0.54 billion years ago. Recent evidence suggests that the first pulse may have actually been the largest event in a series of fits and starts beginning at around 2.7 billion years ago that finally produced a stable low oxygen atmosphere by around 1.8 billion years ago.

Remarkably, both episodes of atmospheric oxygenation happened just before explosions in biological diversity. We have spotty evidence of unicellular eukaryotes (cells with nuclei) before 2.4 billion years ago, but the first fossil evidence for large, diverse eukaryotic communities comes at 1.5 billion years ago. If you are a human, this is part of your history; humans are multicellular eukaryotes descended from one of these early unicellular pioneers. Multicellular animal life is an innovation that seems to have required more oxygen: animals don't appear in the fossil record until about 0.61 billion years ago, toward the end of the second pulse of oxygen.

It is, perhaps, not surprising that major evolutionary events in the eukaryotic family tree, including the origin and diversification of the animals, would be tied to or even driven by major changes in atmospheric oxygen abundance. Eukaryotes generally, and animals specifically, are oxygen lovers. As the subjects of Mayow and Priestly died to prove, we require oxygen for respiration. In general, the larger and more organizationally complex we are (for instance, a human versus a slime mold), the more oxygen we require.

But where did all the oxygen come from? Ultimately, it was produced by the bacterial equivalents of the plants in Joseph Priestley's experiment, a group of photosynthetic microbes called the cyanobacteria. These bacteria are the first and only organisms to have evolved the ability to produce oxygen by photosynthesis. In fact, plants are able to photosynthesize only because their cells harbor descendants of one of the early cyanobacteria. We call them chloroplasts and think of them as little cellular organs, but they are actually the great-great-great... granddaughters of a cyanobacterium that long ago gave up its independence in exchange for the stable environment inside a eukaryotic cell. In any case, photosynthesis is the only known geological process capable of producing oxygen at the rates required for the two pulses of atmospheric oxygenation. The first pulse was probably largely accomplished by cyanobacteria, while the second pulse was probably mostly associated with the cyanobacterial denizens of eukaryotic algae.

What is remarkable about all of this is the extent to which modern life and the atmosphere are products of each other's evolution. The tiniest of photosynthetic organisms played one of the most important roles in shaping the sky, and the sky helped to usher in the age of animals! As a Christian and a geobiologist, I do not believe that this relationship is anticipated or predicted by the Biblical creation accounts.

But then again, why should it have been? The original audience for these accounts would have found concepts like bacteria or even oxygen incomprehensible. The people for whom the Bible was originally addressed thought about origins primarily in terms of ongoing national conflicts and the current human condition. Faced with a variety of violent creation myths that reinforced national conflicts, Genesis said that the universe was created to be good, peaceful, and orderly by one god. It specifically listed things worshipped by other nations as creatures of that god, and in the climax of the creation account, Abraham was called by the same god to be a blessing to all the nations through Israel.

I am not claiming that the Bible cannot be read in a way that can shape us in real and meaningful ways today. In fact, for those who believe that the Bible is inspired, part of the meaning of inspiration has to be that the Bible is God's powerful word to both those with no concept of modern science (most of the world's population, both today and in the past) and to those deeply engaged in its practice. But, and this is a big but, we contemporary Americans read the Bible best when we are sensitive to the assumptions of the original audience, carefully observe how the Bible transformed those assumptions, and look for opportunities to do the same thing with our thinking.

I think that it is important for Christians to reflect on the view of origins that science has given us in light of the thinking evident in the Biblical creation accounts. We have to do this because science gives us a story that is inherently without philosophical or theological meaning; it is up to us to give it meaning by understanding it in relationship with our beliefs. For instance, some see the evolutionary history of life and the Earth and give that history meaning by elevating chance and necessity to the level of prime actors in their own modern creation account. This meaning is not inherent to the theory of evolution; it is supplied by an atheistic belief system external to the theory. I suggest that this view mistakes created things (chance and necessity) for the Creator.

Others have preferred to see the regularity of the universe as the action of an orderly God. This is an old approach to natural theology that was popular among many early scientists, and saw God as responsible for doing such things as maintaining the planets in consistent paths around the sun. Still others look for God in the unexplained. This is a newer approach that sees God as acting primarily in short bursts not explainable by the regular, orderly function of the universe. Looking for God in these ways is a little like trying to capture him in a bell jar, an approach that worked perfectly well with oxygen for Mayow, Priestley, and Lavoisier, but one that is unlikely to impress the Creator described in the Bible.

I prefer to see the same history in the light of a God who desires to share aspects of his nature with his creation, notably including his creativity. Just as he has made humans to be creators (with a little 'c'), he has given the rest of our world the gift of being instrumental in its own creation through the process of evolution. This surely must have been part of what God saw when he described his creation as good! It is my hope that the modern American church can learn to see the goodness of creation in things like the evolutionary history of life and the atmosphere, as well.

This post first appeared in October 2009

With the complete genome sequence in hand, we knew the sequence and location of our genes, but what we didn’t know was how all those genes are regulated: how do the trillions of cells in our bodies know when to turn on or off all those genes? How do the hundreds of distinct cell types develop and function together, when they are all running on the same DNA “operating system?”

That’s where the ENCODE (short for Encyclopedia of DNA Elements) project comes in. Launched in September 2003, shortly after the announced completion of the Human Genome Project, the goal of the ENCODE project is “to build a comprehensive parts list of functional elements in the human genome, including elements that act at the protein and RNA levels, and regulatory elements that control cells and circumstances in which a gene is active.” In other words, the project seeks to understand how the genome “works.”

Early this month, researchers from ENCODE released more than thirty papers presenting their findings. During a Science magazine online chat, the project’s data coordinator, Ewan Birney, explained the outcome:

The ENCODE project aimed to start our understanding of how the human genome works. We know that (nearly) all the information that determines a human is in the genome, as we all start off as single cell with this DNA. However, we had a patchy understanding of how it works, in particular away from protein coding genes.

To work out how the genome works, we used the fact there are many tiny machines (proteins and RNA - RNA is very like DNA) in each of our cells which know how to "read" parts of the genome. By monitoring where these little molecular machines are on the genome, or how parts of the DNA are copied into RNA (there are quite a few different types of RNA as well), we start to gain some insight into the genome.

We did many such experiments, across different cell types (eg, one cell type was very similar to a liver cell type; another was very similar to a white blood cell). This way not only can we see what is similar, we can also see differences between these cell types.

There is a lot more to get to know and understand here - this is definitely closer to the start than the end. But it is a substantial amount of data, and analysis, to start on this journey.

According to the abstract of one of the lead papers from Nature, this extraordinary glut of data “enabled us to assign biochemical functions for 80% of the genome, in particular outside of the well-studied protein-coding regions.” Only 2% of the genome codes for proteins, but 80% or more has some biochemical function. As a Science news article put it, these 30 papers “sound the death knell for the idea that our DNA is mostly littered with useless bases.”

The pro-Intelligent Design organization The Discovery Institute has heralded the discovery as the “demise of junk DNA.” Casey Luskin writes for their blog Evolution News:

Let's simply observe that it provides a stunning vindication of the prediction of intelligent design that the genome will turn out to have mass functionality for so-called "junk" DNA. ENCODE researchers use words like "surprising" or "unprecedented." They talk about of how "human DNA is a lot more active than we expected." But under an intelligent design paradigm, none of this is surprising. In fact, it is exactly what ID predicted.

The extent to which the ENCODE project been able to identify function has been surprising—even exhilarating—though scientists have for some time been getting glimpses of the many ways in which segments of DNA can be “active.” Even in 1970 biologists knew that some non-coding DNA had function, and by 2003 there was a large body of work demonstrating that many non-coding elements acted as promoters, enhancers, insulators, and so on. Indeed, in recent years many have come to appreciate the fact that “junk” was never really an appropriate metaphor in the first place. Still, because sequencing of multiple genomes has shed such extraordinary light on key evolutionary mechanisms, many geneticists have focused on function primarily in terms of which regions do or do not contribute to the evolutionary fitness of their host, rather than whether they were merely "doing something" biochemically. What the impressive ENCODE project has done is open a treasure trove of new information that can only accelerate the pace at which researchers are able to explore the incredible subtlety and complexity of DNA, and refine the very concept of “functionality.”

So with all this in mind, is ENCODE a stunning victory for ID, as Luskin believes? Bryan College biologist Todd Wood thinks not. He writes, “I don't think that function equates to design, nor do I think that design requires or predicts function. They're not the same thing… my understanding of function does not require me to hypothesize God (or an anonymous designer, if you must) as the proximal cause.”

We agree. Indeed we would go on to say that evolution and design are not mutually exclusive. So while finding function is not sufficient to prove design, recognizing that function has arisen by way of evolution does not indicate that God was not at work. We at BioLogos believe God providentially works out his purposes—his designs—through the elegant processes of evolution, not in opposition to them.

Amazing as the new data are, it only strengthens and enhances our evidence for evolution. While much of the genome is “doing something” biochemically, it is still likely that the majority of the sequence is evolutionarily neutral (Senior Fellow Dennis Venema discusses the evidence for this “neutrality” in a post on our site, including a striking comparison between 29 different mammal genomes and the human genome). In fact, another ENCODE researcher participating in the Science magazine chat, John A. Stamatoyannopoulos of the University of Washington School of Medicine, thinks the findings align beautifully with evolutionary theory:

ENCODE's data provide a unique and powerful window through which to view evolutionary change. We can see those changes directly by lining up the genome sequences of many different organisms -- these line-ups have revealed millions of regions where all the genomes agree, indicating sequences that have been specially preserved by evolution while others have decayed away (ie freely changed their letter codes). We now see that a large proportion of these 'conserved' regions are lighted up by ENCODE annotations, indicating that they are marking spots in the genome that contain important instructions for cell function.

We’ve discussed “junk” DNA previously, including a multi-part series by Dennis Venema, and we’ve received many emails over the past few days asking for our comments on the ENCODE findings. On Monday and Tuesday, Dr. Venema will begin to offer his own thoughts on ENCODE.

A special thanks goes to Darrel Falk, Mark Sprinkle, Kathryn Applegate, Dennis Venema, and Tom Burnett for their contributions to this post.

It’s true that physics sounds scary to many people, and it can indeed be a difficult topic to learn. Yet I’ve always loved physics (my degrees are in physics rather than astronomy), because of the way that mathematical equations can describe and predict so much of what we see in the world around us. One reason I got into astrophysics is because the universe contains so many bizarre situations that we can’t reproduce on earth, like ultracold, or extremely high density, or extremely high magnetic fields. It’s a fun challenge to figure out which physical process will be the most important when the situation is so dissimilar to everyday experience. But if the word “physics” makes you shrink in distaste or fear, don’t worry. For the rest of this article, we’ll focus on a more friendly topic: astronomy.

In the last decade or two, our knowledge of the universe has grown dramatically as many new telescopes and spacecraft have come online. In this essay, I’ve selected some of my favorite recent astronomy photographs to share with you. As a professional astronomer and a Christian, I feel God has called me to share these wonders with the Church. Many times, these new discoveries are presented without any mention of God, and sometimes in a context of overt atheism. I want to share these things with you in a Christian context, with God as their creator.

The Milky Way

Have you ever seen the Milky Way? If you live in a rural area, you may have seen it many times. If not, it may have been a dramatic surprise when you first saw it while camping or traveling. On a clear night out in the country, the sky is strewn with brilliant stars—many more stars than you can see under city lights.The faintest stars form a creamy, smoky band from horizon to horizon. Our galaxy contains billions of stars, and thousands of those stars are visible to the naked eye. The stars appear in a band across the sky because we are viewing our galaxy edge-on, like looking at the edge of a dinner plate.

When David looked up at the night sky over Israel thousands of years ago, he may have seen the Milky Way, or a comet, or simply the brilliance of the full moon. Whatever the sky looked like that night, it inspired him to sing:

The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge. They have no speech, they use no words; no sound is heard from them. Yet their voice goes out into all the earth, their words to the ends of the world. (Ps. 19:1-4a)

The heavens are displaying the glory of God for all people to hear, proclaiming their message to people of every language, tribe, and nation. Just about anyone who looks up at the night sky feels a sense of wonder. Yet as Christians, we feel more than a vague sense of awe; we know the Creator of the heavens personally, as our own loving Father.

The heavens declare more than God’s glory. The universe is God’s revelation of himself to us, and teaches us about his character. As the Belgic Confession says about “The Means by Which We Know God,”

We know him by two means: First, by the creation, preservation, and government of the universe, since that universe is before our eyes like a beautiful book in which all creatures, great and small, are as letters to make us ponder the invisible things of God: his eternal power and his divinity, as the apostle Paul says in Romans 1:20. Second, he makes himself known to us more openly by his holy and divine Word, as much as we need in this life, for his glory and for the salvation of his own. (Article 2)

The natural world teaches us about God’s glory, power, divinity, faithfulness, extravagance, immensity, love, and other attributes. God’s special revelation in scripture is our primary place to learn of God’s character (Ps. 19 goes on to talk about special revelation in vs. 7), but the natural world can bring the message to our senses in a powerful way beyond mere words on a page. The Holy Spirit can use the natural world to get the message past our hardened or weary hearts. Nature illustrates these attributes in ways that enlarge our imaginations to appreciate afresh the glory of God.

The Sun

The Solar Dynamics Observatory was launched into space in 2010, the latest of several spacecraft to photograph the sun in detail. In Figure 2, the upper photo shows the face of the sun with a sprinkling of sunspots. The sun is powered by nuclear fusion reactions deep in its core which heat the hydrogen and helium gas till it glows. A sunspot is a place on the sun’s surface where the gasses are a bit cooler than the surrounding area, so that it glows less brightly and appears dark.

The lower photo in Figure 2 was taken the same day, but in X-ray light. X-rays are invisible to our eyes, but you have experienced them at the dentist’s office. There, the X-rays are produced by a machine, travel through the mouth, and are detected by film to reveal an image of your teeth. In this image, X-rays are produced by the sun, travel to the Solar Dynamics Observatory, and are detected by a camera to show an image of the sun. In X-rays, the sunspots are the brightest part of the image, not the faintest. If you look at the sunspot on the left edge, you can see bands of particles rising out of the sunspot in a looping path above the sun’s surface and falling back down on it. As the particles follow lines of magnetic field, they emit X-rays. The loops you see are not small—they are about the size of planet Earth! Because of modern spacecraft, telescopes, and cameras, we can see so much more in the heavens than what is visible to the naked eye. Thus, we are seeing more of what the heavens have to declare about God. In Psalm 19, David goes on to describe the sun:

In the heavens God has pitched a tent for the sun. It is like a bridegroom coming out of his chamber, like a champion rejoicing to run his course. It rises at one end of the heavens and makes its circuit to the other; nothing is deprived of its warmth. (vs. 4b-6)

If David had lived today, maybe he would have written about other properties of the sun, like the power of God as seen in nuclear reactions and looping magnetic fields. As it is, he makes two important points. One is the universal warmth of the sun, by which God provides for all life on earth. The other is the faithful path of the sun, day after day, unchanging year after year. In the book of Jeremiah, God promises his people that he will not break his covenant with them, any more than he would break his covenant with day and night and the fixed laws of heaven and earth (33:19-26). The sun is a persistent reminder, woven into our lives, of God’s faithfulness to his promises.

Parents, youth leaders, teachers—all of us—need to encourage young people to have a passion for God’s world and God’s Word. We should help them learn to distinguish between primary issues of the faith, and secondary issues that Christians may in good conscience disagree on. And we must equip them to think critically and biblically through the many different issues of science and faith so that they can be effective citizens and witnesses in today’s society. Today I’d like to introduce a new resource for the Church in that equipping mission for today’s Christian young people; but first, let me give a bit of my own story.

Prepared for the conflict

My amazing parents homeschooled me through eighth grade. I loved the freedom to explore things that I enjoyed; the challenge of tackling subjects well beyond my “official” grade level; and the joy of forming deep relationships with my parents and brothers. We used many high-quality science texts, but in my memory, all of the resources on origins available to us promoted an often-combative Creation Science perspective.

In ninth grade, I went to public high school armed and ready for the fight I had been trained to expect. When my biology teacher taught evolution and required us to write an essay, I hi-jacked the essay topic and turned it into an apologetic for six-day creation. Because I was in “conflict mode,” I was not ready to consider the arguments for evolution, or the possibility that Christians could actually accept it. I stayed on guard for the next three years until I headed off to the less hostile territory of Wheaton College.

As a student in Wheaton’s explicitly Christian environment, I felt a new safety to explore different biblically faithful positions that Christians hold, while at the same time maintaining my commitment to my faith. I majored in English and Secondary Education, and as one of my science requirements I took a class called “Issues in Biology.” My professor’s Christian faith shone through her teaching, and her words have stayed with me to this day: “Jesus is not going to be standing at the gateway of heaven,” she said, “holding a clipboard in his hand and asking, ‘Did you believe in six-day creation? Did you believe in evolution?’ He’s going to be asking the one question that matters: ‘Did you believe in ME?’” Yes! I thought. I agree. My professor then proceeded to surprise me: she was the first person to clearly articulate for me how someone could both believe the Bible and accept evolution. I realized that this— alongside many others—was a secondary issue, and that whatever my position on origins might be, I could have fellowship with Christians who held different positions.

But this particular biology professor had more to say than, “we can all just get along.” I remember her bemoaning a phenomenon that she had observed as a teacher: Christian students, raised in a strict Young Earth Creationist background which only portrayed the weaknesses in evolution, would often lose their faith when confronted with evolutionary theory in its full strength. Having only ever heard one perspective, they hadn’t learned to think critically through different viewpoints. Furthermore, they identified their faith so strongly with Young Earth Creationism, that when science seemed to contradict their understanding of origins, they felt they had to jettison not only their Creationism, but the whole of their Christian faith.

During my training as a high school teacher, I learned another way to understand what was happening in the minds (and lives) of these students using Piaget’s theory of cognitive equilibrium. In simplified form, the theory says that students have a mental construct of how they see the world (called a schema by Piaget); with this schema, they are happy and peaceful—in a state of equilibrium. When they encounter new information, however, they get pushed into an uncomfortable state of disequilibrium. In order to return to equilibrium, they must either assimilate the new information into their existing worldview, or they must accommodate their worldview to fit the new information. Resilient learners and a robust faith can handle such challenges.

But the faith of the students my professor described was different— strong, but brittle; it did not have the resilience that comes through testing. Indeed, in 1644, John Milton described such untested conviction like this: “I cannot praise a fugitive and cloistered virtue, unexercised and unbreathed, that never sallies out and sees her adversary, but slinks out of the race where that immortal garland is to be run for...” (from Areopagitica: A speech for the Liberty of Unlicensed Printing to the Parliament of England). To use Piaget’s terms again, evolution threw these students into a disequilibrium from which they could not recover; they could not assimilate evolution into their Creationist worldview, and they could not or would not accommodate their worldview to fit the scientific evidence—so they floundered.

Training for resilience

In my own roles as a teacher and youth leader, I strive to introduce young people to new ideas that will stretch them—even cause them to lose their equilibrium at first. Too much new information conflicting with students’ pre-existing ideas will mean that they cannot assimilate the new information or accommodate to it. Too little new information will mean that they are not being challenged. Both extremes mean that the student is not learning. What I aim to do is to push them into disequilibrium, but also then provide them with the tools to assimilate/accommodate for themselves, and reach equilibrium again—with a deeper, enriched, and more nuanced worldview.

While this has been my strategy to personally help train up resilient young Christians in classrooms and youth groups, last year, Dr. Ruth Bancewicz (the Test of FAITH Project Leader, contributor to this blog, and fellow member of City Church Cambridge) brought me on board to work on another exciting project. Since then, I have been able to use my passion to provoke young people to think more deeply in my role as author of the Test of FAITH homeschool material.

As it was when I was a homeschooled student myself, the vast majority of homeschool science resources available today focus on the issue of origins, and from a Young Earth Creationist perspective. We have developed the Test of FAITH homeschool course to allow young people to learn about the different perspectives that Christians hold on a wide range of issues. In fact, let me emphasize that less than one-third of this material is about origins! For my part, I have loved the opportunity to delve into other issues of science and faith while developing this course; we think students will also appreciate seeing how a biblical worldview engages with such diverse topics as cosmology, the environment, neurology and the soul, free will and determinism, and bioethics.

Both the broad range of issues addressed in the Test of FAITH curriculum and the approach this curriculum takes to those topics will benefit students in several specific ways:

• Learning about different viewpoints will encourage homeschoolers to think critically through ideas and their consequences.
• Coming in contact with a variety of views will cause students to question why they believe what they believe, and will give them th tools to emerge from that questioning with an even deeper faith in God.
• Showing that Christians can disagree on various secondary issues, yet still remain committed, Bible-based believers, will help diffuse the acrimony that often surrounds science-faith issues.

I still have many questions, and I feel that my journey in understanding how science relates to my faith has just begun. However, Test of FAITH has been a significant marker on my own path, and I hope it will be a milestone for many homeschoolers around the globe, as well.

Science and Christianity: An Introductory Course for Homeschoolers is available for free download at www.testoffaith.com/homeschool. The 3-8 week course is designed for use with the award-winning documentary Test of FAITH: Does science threaten belief in God?

Ten free Test of FAITH DVD’s are available to homeschooling Biologos supporters! Contact abigail@testoffaith.com to reserve your copy.

As Christians and geologists, we frequently encounter people with stories of storm tossed and shipwrecked faith that started when they began to wrestle with apparent conflicts between science and the Bible. The stories have a common thread. The Bible, they were told, clearly teaches the earth was created a few thousand years ago with life forms fashioned more or less as we find them today. Because the earth is very young, the incredibly complex sequence of rock, sediment, and fossils found on our planet must have been deposited in a very short period of time. Noah’s Flood, as the only plausible causal agent, was obviously a global and violent event. Theories of an ancient earth and adaptation of life forms, they were further informed, have been constructed on flimsy evidence created by atheistic scientists searching for ways to expunge God from modern culture. But as these sojourners began to explore and understand the actual evidence for an ancient earth, they found themselves increasingly convinced of its legitimacy, and thereby increasingly questioning the veracity of their faith – many to the point of relegating Christ to just another wishful myth.

It is our conviction that these stories of strained or lost faith derive not from an inherent unwillingness to trust the Bible, but rather from misguided teaching on the message of Scripture. Those insisting the earth is young are not simply putting their faith in God’s Word, they are putting their faith in their own particular interpretation of that Word. As such, an entirely unnecessary stumbling block to faith is created, where faith in Christ first requires rejection of sound science.

As we have prayed and studied this subject, we have felt God’s call to speak out against this misplaced stumbling block. We are sensitive, however, to the fact that when scientists speak on issues of faith, there is a natural suspicion that science will be regarded as the ultimate arbiter of truth, and Scripture will have to yield whenever conflict arises. It is thus important for us to state here that both of us ascribe to the authority and inspiration of Scripture, the reality and necessity of Christ’s death and resurrection, the existence of genuine miraculous events, and the truthfulness of the Biblical historical narratives. In our understanding, science will never trump Scripture, but by virtue of science being a study of God’s natural creation, it may occasionally assist in our understanding of God’s written Word. Where this has occurred historically and has been accepted by the Church, the invariable result has been the abandonment of an interpretation of some secondary importance, without any change in our understanding of the intended central message.

This phenomenon is illustrated well by the 17th century clash between Galileo’s claims that the earth revolves around the sun, and the multiple passages in Scripture that appear to clearly present a static earth as the physical center of God’s natural creation. The Bible tells us repeatedly that the earth is fixed upon its foundations (Ps 93:1, 104:5) and the sun rises and sets (Eccl 1:5, Ps 19:6). Within the context of the historical narratives (which we are not accustomed to interpreting in any figurative manner) we read statements about “the sun rising over the land” (Gen 19:23), and a miraculous event during a famous battle where “the sun stopped in the middle of the sky and delayed going down a full day” (Josh 10:13). Likewise in the Levitical law, we find commands to complete the Passover sacrifice “when the sun goes down” (Deut 16:6).

God’s people had interpreted these verses for thousands of years to be authoritative statements about both spiritual and physical realms, and 17th century believers understandably struggled with allowing science to alter traditional interpretations. If God says the sun rises and the sun sets, how could it be otherwise?

Fast forward a few centuries, and we are now somehow quite content to have allowed science to alter our thinking on these verses, without abandoning notions of inerrancy or inspiration. The reason is simply because it was eventually recognized that the primary message of these verses was never on the nature of nature, but on the nature of man and his experience with his environment and his God. Solomon and Joshua accurately recorded their experience from an earthly perspective (sun rising and setting), and David praised God for holding the earth fixedly in His hand (Ps 93:1, 104:5), without requiring a meaning of fixity in space. The central message of these verses was apparent to readers before and after Galileo. Only a secondary interpretation, likely never intended by the writers, was cast off after scientific advances.

So what is the issue regarding Noah’s Flood? The modern debate centers around two questions. Was it truly global in extent, and can the Flood account for the earth’s complex geologic record? To address the first, it is worth being reminded of the Apostle Paul’s letter to the church in Rome where he makes a statement that “your faith is being proclaimed throughout the whole world” (Rom 1:8). Entire people groups existed at this time in China, Australia, and North and South America who knew nothing of the church in Rome. Though using wording that literally means the entire world population, Paul is clearly referring to the world known to him and his readers at the time.¹ Paul speaks truthfully from his experience. Allowing for the possibility that Noah’s Flood encompassed all of known humanity without necessarily covering the entire planet is thus consistent with how other passages in Scripture are interpreted by Christians who believe the Bible is authoritative and trustworthy.

Our primary interest in this blog series is the second question, the widely promulgated notion that the Flood can account for the earth’s complex geology, and that all genuine Christians should accept this viewpoint.

Notes

1. Many Biblical scholars define a literal interpretation as one that takes into account the literary genre, figures of speech, context, and author/audience perspective in deriving the intended meaning. By this definition, poetry and allegory are literally interpreted as figurative. In this blog and in our article, our use of literal conforms to its more common definition where a literal interpretation is one that adheres to the precise definition of words without figurative meaning and without requiring additional context to understand.

What are the best ways to spark productive conversations about science and faith? Certainly there are books, articles, blogs (like this one), and podcasts. Or we can host major events with a prominent speaker or panel. These are all good things, to be sure. But there are particular advantages to using film. Unlike books, articles, blogs, or podcasts, videos engage with both sight and sound. A single DVD is much less expensive than a dozen copies of a book for a group to read through together. A film is portable, flexible, quick, and easy to use. Participants don't need to prepare between sessions, nor do they require internet access. And you don't need to find a big-name speaker or organize a large-scale event.

Test of Faith

Unlike years ago, there are now high-quality and stimulating science-faith documentaries that are well-suited for engaging groups and stimulating conversations. The Faraday Institute for Science and Religion, based in Cambridge, UK, has put together an award-winning documentary, Test of Faith: Does Science Threaten Belief in God? This 2009 film is divided into three distinct 30-minute sessions, which can be further divided if desired. A wide range of topics are considered, including the age and origin of the universe, the possibility of other universes, evolution, care for the environment, the brain, free will, and bioethics. The trailer can be seen above. This film is a good choice if you are not looking to focus primarily on issues around biological evolution. It is also particularly well-suited for groups that include both skeptics and Christians, as one could imagine it being shown on a public television station such as PBS or BBC. Faraday now has quite a range of supporting materials around the film, including bonus footage, a rich website, a leader’s guide, a study guide for participants, and a book with autobiographical contributions from scientist-believers, Test of Faith: Spiritual Journeys with Scientists. Contributors to the film and book include Francis Collins, Alister McGrath, Ard Louis, Jennifer Wiseman, Bill Newsome, John Polkinghorne, Alasdair Coles, Rosalind Picard, and John Bryant.

From the Dust

Just this year, BioLogos partnered with Highway Media to produce a new documentary, From the Dust: Conversations in Creation. This film is just over an hour long, and is divided into four sections of similar length: “Faith and Science,” “Divinely Inspired,” “The Conversation,” and “Truly Human.” Some early clips from the film (prior to the final round of editing) and additional footage can be found in the multimedia resources section of the BioLogos website, and the trailer is above. From the Dust has a firm focus on Genesis, creation, and evolution, probably the area of the most significant tension in our society today related to science and faith. Unlike Test of Faith, there is no narrative voice in From the Dust, and contrasting views are held in tension. It also focuses on theology more than science, so From the Dust may be a better choice than Test of Faith for some groups of Christians. While the Test of Faith film has a very modern and logical structure to it, From the Dust has more of a personal and emotional feel, and you feel that the people in the film are talking with you more than just talking to you. You see the cost that divisive positions on creation and evolution can have on Christians, even in the college classroom. While the film has a strong leaning towards evolutionary creationism and features N. T. Wright, John Walton, John Polkinghorne, Alister McGrath, Peter Enns, Jeff Schloss and Rick Colling, there are also significant contrasting voices from Answers in Genesis and Canopy Ministries. In my opinion, From the Dust is a good choice for many churches, small group Bible studies, or Christian student groups (e.g., InterVarsity, Navigators) to use. There are fewer supporting materials around From the Dust, due both to its new release and also its more inductive approach than that of the Faraday project. In addition to bonus footage, there is a website, a list of sample discussion questions, and a group study guide that I developed.

Next Steps

As you decide which film to use for starting conversations and how to use it, there are several things to consider. Will you show the whole film at once, or will you spread it out over several sessions? Will you provide additional structure or just have an open discussion after each viewing? How many days do you have available? How much time at each session? What are the worldviews of your audience? What is their level of biblical, theological, and scientific knowledge? How big is the group, and what is their age? What is their willingness to do homework and their level of interest in the topic? Is this a new group specifically convened to explore science and faith issues together, or is this a preexisting group that has been doing other things together and has varying levels of commitment to this new topic? What sort of expertise does the leader of the group have, or are there multiple leaders? All of these can affect the group dynamic and may influence the choices you make.

The groups I have worked with have been Christian students from secular colleges, Christian faculty and staff from secular colleges, a small group Bible study, and a general audience. I have found that Test of Faith worked well over three weeks with my Bible study group and with the faculty and staff group, though in these exclusively Christian groups I needed to add a bit of scripture, song or prayer in those settings (as is also recommended in the Faraday materials). The film was particularly good for a 30-minute screening at the general audience event, which also featured a panel for Q&A afterwards. It could likely be used in a college classroom, too, even at a secular institution. I had been considering strategies for using Test of Faith at my church as well, until I found From the Dust.

As I began thinking about ways to use From the Dust while it was still in the final editing stages, I screened it in two parts to three of the four audiences mentioned above (not the general audience). I asked several dozen undergraduates from local InterVarsity groups to give me their responses to the film and to tell me what questions it makes them want to explore more. I did the same with the Christian faculty and staff, and with my home Bible study group. Then I assembled a six-week curriculum (plus an opening session on setting expectations and sharing my vision), primarily aimed at Christian undergraduates. My students this summer loved it so much that we followed it with three-weeks on Test of Faith! Now I keep getting asked when I’ll do it next. But I am hoping that others, even my own students, will want to lead discussion groups like this. You don’t have to be an expert to start a conversation, and sometimes being a leader is the best way to learn.

My walk in the scientific/evangelical world – Who am I?

First, a little history. While I was working towards my doctorate in Bioengineering at the University of Washington, my husband and I attended a Presbyterian church in Seattle. Young and newly married, we chose to help in Sunday School, and found our niche teaching second graders there for almost 10 years. During that time I was very involved in the scientific world and surrounded by a university community that had a real appreciation for science. Wrapped up as I was in the lab, focusing on my dissertation, and living in a climate of serious inquiry and study, I was unaware of any significant disconnections between science and faith. Science was actively integrated with faith from the pulpit of our church, and in turn, we always loved to bring little bits of science into our lessons—even to the point of using sediment deposits in the Black Sea as evidence of a regionally-based ‘flood’ event thousands of years ago during our lessons about Noah’s ark. No one complained.

As I loved research, I continued to work in a lab at UW once I finished my PhD. But I also had two babies while completing my dissertation, and eventually found it challenging to balance work and family. When my husband was relocated to San Diego, I took that difficult uprooting as an opportunity to step back from labwork and spend more time with preschoolers. Leaving life at a fast-paced urban research university for the relaxed and resort-like coastal suburbs of San Diego County was another kind of culture shock, compounded by the fact that we found looking for a new church to be particularly hard. After some consultation with friends of friends, we stepped out of our Mainstream Protestant comfort zone and visited a Calvary Chapel.

There was certainly an adjustment period (eventually we stopped doing a double-take every time we saw the board shorts and flip-flops on Sunday morning – even on the stage!), but over time we were able to plug into a dynamic evangelical community. We found the vibrant, Christ-centered church to be a great place to make deep and lasting connections with the people, both through small groups and by serving in Children’s Ministry. Making a personally quite revolutionary decision to fully step away from the busy life of a researcher, I found a new calling when I took on a part time job leading the church’s 2nd and 3rd Grade program.

A surprising disconnect in the faith community

I now find myself spending my weekends with over a hundred kids and volunteers, and it has been a great adventure. However, it has also been through this ministry that I discovered first hand the uncomfortable disconnect between science and the evangelical church. At first it was just a few throw-away comments from fellow believers in church: dismissal of museum exhibits, eye-rolling at the ancient geology of the Grand Canyon, etc. Of course, I had heard rumors of such thinking, but I was a little surprised to find it to be so common in the Evangelical community. Many people I knew were rejecting large swathes of science outright. Sometimes I give out prizes to the kids in my class—trinkets and other insignificant plastic things that kids love—and some of the items I had in our “prize box” were “dino eggs with dino facts.” To my amazement, these items brought on complaints from parents because of their reference to the age of the dinosaurs some 65 million years ago.

Meanwhile, my husband—an environmental engineer with a background in Geology—was serving at the church with older kids. In his class he often heard that favorite question from Christian kids, “How do the dinosaurs fit into the creation story?” But the only answer he’d ever heard in response was the explanation that dinosaurs were obviously on the ark, and somehow became extinct after the flood. He is the most easy-going person ever, but he was taken aback by this wholesale dismissal of geologic history and by the lack of a more nuanced discussion of Scripture. At that point we began to ask around, and learned that, yes, this is a common way of thinking in evangelical circles.

These attitudes about science and the Bible seemed especially prevalent among the many home schooling families in our community. More than half of my church coworkers homeschool or send their kids to Christian schools. Several of these wonderful folks were homeschooled themselves, and very few attended secular universities. Many of the children and families that I minister to each week are also homeschooling families, and for the first time I became troubled by what they were learning about science and the natural world. I attended public school and secular universities both for undergraduate and graduate studies, and (after much thought and discussion) we chose to send our own kids to public schools, not least because we want them to have great training in science and math. While we are fortunate enough to live in a community with challenging public schools well equipped to prepare kids in those areas, I want the same for homeschooled kids, as well. All Christian young people should be able to both excel in science and grow in their understanding of the God of Scripture, whether they’re taught in institutional settings or at home. I only wish I could better trust available homeschooling science curriculum materials to achieve that end.

Is there cause for concern? Does it really matter?

One can correctly argue that Jesus’ incarnation and resurrection are the central beliefs and values of the Christian faith. In the end, does it matter what we teach our kids about origins or the age of the Universe? What harm is there in these black and white beliefs held by good people doing good things?

I believe that it does matter, for several reasons:

1. We have generation of Christian young people who are not trained in scientific principles that will allow them to meaningfully contribute to fields such as cosmology, geology, biology, etc. Our universities especially need an evangelical presence!
2. Thoughtful, scientifically-minded people—both young and old—will be pushed AWAY from the evangelical community. I know that I could not attend a church that dismisses scientific evidence in order to fit nature’s narrative into preconceived ideas, or one where scientists are actively mocked.
3. The faith of homeschooled and other Christian kids can be challenged when they have their first college classes on geology, evolutionary biology, etc. Many will reach a point where they think they have to choose between their faith and what the scientific world tells them about the created order.
4. Simply, evangelicals are in danger of looking a bit ridiculous to reasonable and educated people when they appear so fearful of science, making it easier for non-Christians to dismiss the gospel message.

Exploratory Efforts –Communicating God’s Revelation in Nature

Despite these experiences and concerns, my overall impression of the evangelical community’s perspective on science is that in most areas, everything is fine. But it seems that sensitivity around a few points—particularly origins, the age of the earth and climate change—limits open discussion even of more general scientific issues, and as wonderful as they are, our pastoral staff rarely invokes natural wonders to illustrate doctrine, whether speaking to adults or kids.

As a Christian, a scientist and an educator, I particularly want the kids I work with to know that it is good to wonder about the world around us and say “God Did It – But How?” More than that, I want them to know that they do not have to be afraid of the answers to those questions. So I ask myself, “Is there anything I can do?” As it turns out, I’ve concluded that there are ways that I (like any of us) can help, even if the efforts are incrementally small at first. Our church hosts a tremendous summer camp that teaches kids Bible stories and worship, but also gives children a chance to choose an “elective” and learn more about subjects like art, music, cooking, a sport, or science. Each summer more than 1,000 kids attend this outreach at our church campus, and I was privileged this past summer to be able to “coach” science and write up a fun science curriculum that dovetailed with the various Bible stories the kids were hearing.

The practice of science became a wonderful avenue for sharing God’s love and the Salvation Story whether I pulled ideas for experiments directly from the Bible (such as creating, testing and optimizing sling shots like David) or used the stories more allegorically; extracting DNA from strawberries (always a hit with kids) illustrated our uniqueness in God’s eyes, while creating a solar music box demonstrated the beauty of living in God’s light vs. hiding in the darkness. I found that this was an excellent place in which to bring young Christians (and non-Christians) into an understanding and appreciation of basic scientific principles in conjunction with communicating spiritual truth. My hope is that those lessons will open their eyes to further inquiry as they grow up and move on through junior high, high school, and—for some—beyond.

In the end, I was inspired to write out a preliminary curriculum, combining scriptural lessons with science experiments. This effort led me to co-author Wonders In Our World: Insights From God's Two Books, a book that further explains the complementarities of God’s Two Books – the book of nature and Scripture. While materials like these can be used in church settings such as the summer camp at our Calvary Chapel, my hope is that they will become a resource for Christian families all year long—especially for those homeschoolers I love so much. A full curriculum may still be a ways off (perhaps I’ll have more to share about that in a future post), but in the meantime, I’m honored to be able to draw on both Scripture and science to share my joy in Christ and his creation.

The Denisovans, an extinct hominid group that interbred with modern humans, made the news again lately with the publication of a more detailed study of their genome. One of the many interesting findings was that the Denisovans share the same chromosome 2 fusion that modern humans have. In this post, I review what we know about the origins of human chromosome 2, and then discuss the new Denisovan findings and their implications.

The origins of human chromosome 2: a brief review

Though I have discussed the evidence for a fusion event leading to human chromosome 2 before, perhaps a brief review of the evidence is in order. The human genome is made up of 23 pairs of chromosomes (for a total of 46 chromosomes). This makes us something of an oddity among living great apes, all the rest of whom have 24 pairs of chromosomes (for a total of 48). Given that there are many independent lines of evidence that support the conclusion that we share a common ancestor with other great apes, this poses something of a conundrum: how is it that our species arrived at this specific chromosome number? If we were to represent this “problem” on a phylogeny, or tree of relatedness, it would look something like this (not to scale):

Our closest living relatives, chimpanzees and bonobos, both have 48 chromosomes, as do all other great apes such as gorillas and orangutans. This pattern has one of two explanations, one of which is much more likely than the other. Either the common ancestor to these species had 48 chromosomes, and there was an event that reduced that number to 46 specifically on the lineage leading to humans (option A), or the common ancestor species had 46 chromosomes, and there were independent, repeated events that increased chromosome number in all other great ape species (option B). We can compare these options by placing the required event(s) on the phylogeny (again, not to scale):

It should be obvious that the option that requires the fewest events is the more likely one – in this case option A with an event that reduces chromosome number in the lineage leading to humans. The other option, that of repeated, independent events to increase chromosome number, remains a formal, but unlikely, possibility. Events that reduce chromosome number are not frequent occurrences, so Option A is more likely than Option B.

We can also find further support for Option A, because it predicts a specific type of event, namely one that reduces chromosome number. Since loss of a large amount of chromosomal material is almost always detrimental, we need an event that reduces chromosome number without losing information. One way for this to happen is for two chromosomes to fuse together and become one. Initially, this event would produce an individual with 47 chromosomes, where two different chromosomes get stuck together. Contrary to what is often assumed, this individual would be fertile and able to interbreed with the others in his or her population (who continue to have 48 chromosomes). In a small population, over time, two relatives who both have one copy of the fusion chromosome may mate and produce some progeny with two copies of the fused chromosome, or the first individuals with 46 chromosomes. Since either a 48-pair set or a 46-pair set is preferable for ease of cell division, this population will either eventually get rid of the fusion variant (the most likely outcome), or by chance will switch over completely to the “new” form, with everyone bearing 46 chromosome pairs. While not overly likely, this type of event is not especially rare in mammals, and we have observed this sort of thing happening within recorded human history in other species. Some mammalian species even maintain distinct populations in the wild with differing chromosome numbers due to fusions, and these populations retain the ability to interbreed.

Further evidence for a fusion event in the lineage leading to modern humans comes from comparing synteny, or gene locations and orders on chromosomes within modern great apes – an issue we have discussed here before. In brief, what we see in human chromosome 2 is exactly what we would predict for a fusion event. When compared to other great apes, we see the genes on human chromosome 2 match up, in order, with two smaller ape chromosomes. We also see that sequences used at the tips of chromosomes are present at the proposed fusion site, and that human chromosome 2 has not one but two sites for the cell cytoskeleton to attach to for cell division – but that one of the sites is mutated and not functional, though it lines up precisely with the location of this site on the appropriate ape chromosome. Together, this evidence consistently supports both common ancestry for humans and great apes, and specifically that the difference we see in our chromosome numbers arose due to a single fusion event. I briefly discussed this evidence in my last post where I describe how I teach some of this material and the compelling impact it has on students exploring the evolution question for the first time.

Enter the Denisovans

With that as background, we are now prepared to appreciate a new finding that comes from genomics work done on the Denisovan hominids, an archaic species that is more closely related to Neanderthals than to us, but that nonetheless interbred with some anatomically modern humans as they migrated out of Africa and populated the globe. (For those not familiar with the Denisovans, or the evidence for our interbreeding with them, both Darrel Falk and I have written on this previously, here and here). Recently, a more detailed understanding of the Denisovan genome was published, and nested in the new information is the discovery that the Denisovans share the 46 chromosome set with the same fusion that we have. This strongly supports the hypothesis that the fusion event predates the separation of our species. If we were to represent this on a phylogeny, we can now place this event with more accuracy than before (as before, the phylogeny is not to scale):

Despite this new information, one obvious question remains. Did the Neanderthals also have the 46-pair set? From looking at the phylogeny above, we can see that the most likely answer is that they did, since the fact that the Denisovans had it strongly implies that the last common ancestor of humans and Neanderthals / Denisovans had it as well, and the Neanderthal-Denisovan split comes later. While the Denisovan DNA samples are of high enough quality to make this assessment, we do not yet have Neanderthal DNA of high enough quality to do the same analysis with current methods (though one additional feature of the new work on the Denisovan genome is developing more sensitive DNA sequencing techniques that may resolve this question in the future).

In other words, this fusion seems to be an ancient one, predating our species by several hundred thousand years. Present estimates of the last common ancestor between humans and Neanderthals / Denisovans range at about 800,000 years ago.

Implications for understanding our “becoming human”

The main implication from this work is that it places the fusion event well before the advent of our species. I’ve often chatted informally with Christians about evolution, and at times some have thought that this fusion event was what “started” our species, or made our species unable to interbreed with other groups. Some have even suggested that perhaps the fusion event was what produced the first human (i.e. Adam).

Note that thinking this way suggests a misunderstanding of how chromosome fusions occur and what effect they have on their hosts. A fusion does not precipitate a speciation event, but rather the individual with the fusion remains a part of his or her population, and able to interbreed, even if with reduced fertility. Also, there is no necessary biological effect or change that the fusion produces on the appearance of the organism. These misunderstandings aside, however,what this new evidence shows is that this fusion event took place long before modern humans arose at around 200,000 years ago. Indeed, the 800,000 years ago date for the last human - Denisovan common ancestor means that this is the most recent date possible for the fusion. While it is an interesting piece of our evolutionary history, it doesn’t seem to have much to do with how we came to acquire the traits that set us apart from, and ultimately outcompete, other similar species.

Keeping History Safe

In the cold morning air with the sun not yet over the ridge, the place to begin preparation for summiting Mount Darwin is to ponder the reasonableness of miracles. Many Totalizers would like to ban miracles from university consideration and inquiry. Trouble is: human history is awash with credible people reporting miracles.

Modern academic tradition tends to try and maintain order. For historians it behooves us professionally to avoid accounts of alleged spiritual events. We find comfort in a little logical gymnastics that keeps history safe for us to wander in, a deceptively formulaic avoidance method that helps us avoid what people are telling us about extraordinary events in the past.

David Hume popularly articulated this logical gymnastics in an essay titled “Of Miracles” that was eventually printed in Enquires Concerning Human Understanding (1748). “I flatter myself,” Hume triumphantly proclaimed, “that I have discovered an argument . . . which, if just, will, with the wise and learned, be an everlasting check to all kinds of superstitious delusion, and consequently, will be useful as long as the world endures.”

His everlasting check on superstition begins with a circular argument that because miracles can’t happen, a reasonable person should not even listen to reports of them. Hume taught that though the normal job of a historian was to listen to the testimony that comes down to us from the past, there is a point at which you can close your ears. Hume knew that historical testimony can get wild, so he came up with a way to domesticate the wildness, a way to make history a zoo rather than allow it to be a jungle. His “Of Miracles” has been tremendously influential in the discipline of human history over the last two hundred and fifty years, not because his ideas are strong, but because his ideas are useful. Get rid of “superstitious delusions,” and the discipline of history can be turned from a safari into a form of home economics. Hume’s domestication of history is seductively simple. Instead of following the Aristotelian tradition of linking the credibility of hard-to-believe testimony to the credibility of the testifier, Hume recommended disregarding the testifier and focusing only on the testimony. This effectively removed the persuasive power from hard-to-believe testimony. Miracles need the credibility of an eyewitness in order to have persuasive power. Hume cut the power source from the unwanted testimony.

Essentially, Hume adopted the modeling technique that Darwin later used and is best seen in Global Positioning System (GPS) units. Hume recommended gathering testimony from the past and every region to create a general model of what humans generally experience. Using this mass of information, one should generalize standards of common experience. Now if anyone reports a miracle, the alleged event can’t be true because it does not conform to the generalized standards of common experience. (Of course, Hume had already refused to allow that any reports of miracles could be used even to generalize common experience.) It’s tricky. Its logic is circular. But it works to weed out awkward, quirky information. It is as if a domineering GPS unit created a sphere to serve as an abstraction for the earth, then insisted that the earth can’t have wobbling poles and flattening in the upper latitudes because the sphere in the GPS shows it can’t be true. Given a useful and trustworthy GPS, don’t listen to a scientist who might tell you something different than what the GPS tells you.

The circularity of this argument has been noted ever since Hume first proposed it, but Hume was a good writer and said what a lot of people wanted to hear. Miracles are impossible so miracle reports can’t be true. Don’t even listen to reports of them.

Balancing Likelihoods

Also embedded in Hume’s essay is the awkward “rule of logic,” most often called “Balancing Likelihoods.” By combining math and logic in an odd way, Hume’s “Of Miracles “ offered another way for historians to avoid thinking about miracles. Balancing Likelihoods has many names but is probably best stated by David Hackett Fischer, in his Historians’ Fallacies: Toward a Logic of Historical Thought, as “the rule of probability:”

“[A]ll inferences from empirical evidence are probabilistic. It is not, therefore, sufficient to demonstrate merely that A was possibly the case. A historian must determine, as best he can, the probability of A in relation to the probability of alternatives. In the same fashion he cannot disprove A by demonstrating that not-A was possible, but only by demonstrating that not-A was more probable than A. This is the rule of probability.”

This seems to be practical but is impossible. Balancing Likelihoods, in the way described by Fischer, cannot be used by historians in any normal practice. It is a talisman to keep history mentally safe from the wildness that is reported to exist. Logicians, especially mathematicians, have long criticized intellectual constructions like this. The “probability” that Fischer writes about is seemingly mathematical, but the math is simply implied to give a sense of strength to human feelings.

Before Hume wrote “Of Miracles” probabilistic logic had been advancing rapidly and there was a great hope that mathematical analogies would strengthen human thinking—even Christian apologetics. “Pascal’s Wager,” the most famous mathematical apologetic from the seventeenth century, equated eternal salvation with mathematical infinity and then applied it to a gambling formula. Antoine Arnauld, in The Port-Royal Logic (1662), and John Locke, in his Essay Concerning Human Understanding (1690) and Discourse on Miracles (1706), carried probabilistic math and logic into the handling of reported miracles. A half-century later, however, Hume reacted against Arnauld and Locke’s teachings that mathematical analogies could help in the discussion of the credibility of miracles. Hume insisted that to handle a reported miracle, a historian had to create two separate ratios, pro and con, for believability. The ratios were then to be weighed against each other. This is Fischer’s “rule of probability” quoted above. In the language of Hume’s era, this was proclaimed as the “calculus of good sense.”

Lorraine Daston, in Classical Probability in the Enlightenment (1988), offers an excellent study of Hume and the many eighteenth-century mathematicians who wanted to help bring rigorous quantitative thinking to what today would be called the humanities. Daston writes that by the 1840s, mathematicians realized that “the ‘calculus of good sense’ had become antithetical to good sense,” and that today most of what these early probabilists were trying to do is considered “patently absurd.”

In 1901, one of America’s preeminent philosopher-mathematician-logicians, Charles Sanders Peirce, wrote three essays attacking the way historians had adopted Hume’s bad logic: “A Preliminary Chapter, Toward an Examination of Hume’s Argument Against Miracles, in its Logic and in its History,” “Hume’s Arguments Against Miracles, and the Idea of Natural Law,” and “On the Logic of Drawing History from Ancient Documents especially from Testimonies.” Peirce showed that historians are in error when they talk of judging testimony by balancing probabilities because “in a scientific sense, there are no ‘probabilities’ to be judged.”

Probability, Peirce wrote, “is the ratio of the frequency of occurrence of a specific event to a generic event.” A testimony “is neither a specific event, nor a generic event, but an individual event.” Peirce further pointed out that what people were justifying by claiming Balancing Likelihoods was really simply relating “what they prefer to do” to what they don’t prefer. “Likelihood is merely a reflection of our preconceived ideas.”

Historians like me who teach in universities about the reasonable credibility of Jesus’ resurrection need to be students of Peirce not Hume on the subject of assessing the credibility of reports that come down to us from ancient history. Dealing wisely with reports of events verging on the incredible is just part of the normal job of being grounded in the social study of our complex human past.

“Come to history as a doubter,” Richard Marius advises in a historical methods manual. “Skepticism is one of the historian’s finest qualities. Historians don’t trust their sources. . . . Nothing is quite so destructive to a historian’s reputation as to present conclusions that prove gullibility.”

But Marius is wrong. In practice, historians have to trust more than doubt. In practice, historians, especially ancient historians, can’t rely on doubting. Historians have to be close listeners, discerning listeners, wise listeners, who sometimes have to make harmonies and stretch for belief.

There are several different kinds of arguments that people bring along these lines; I want to talk about just one. So first… the Heidelberg catechism, one of the forms of unity of the church I go to (the Christian Reformed Church), says

Providence is the almighty and ever-present power of God, by which he upholds as with his hand heaven and Earth and all creatures and so rules them, that leaf and blade, rain and drought, fruitful and lean years, food and drink, health and sickness, prosperity and poverty. All things, in fact, come to us not by chance, but from his fatherly hand.

And part of the way it comes to us—not by chance, but from his fatherly hand—part of the way God has designed our world, is that there is a great deal of regularity and dependability in our world. Of course, if it were not for this regularity and dependability, we couldn’t do the things that we actually do. I mean, for example, if I just wanted to walk off the stage—if, for example, all the sudden those stairs over there suddenly turned into a ladder going up—well, that would make it really difficult.

If you are trying to build a house, for example, you have this hammer, but all the sudden the hammer turns in to a goose or a pigeon. Again, that would make things really difficult…or if the nail turned into a worm…or if you get in the car and turn the key and the car turns into a camel, things would be really hard, much harder than they are. This regularity and dependability in our world is an essential condition of our being able to live in the world in which we actually do.

If the world were irregular enough, we would not even be able to live in it, but there are also, according to classical Christianity here (the Heidelberg catechism, for example) there are also special divine actions; sometimes God does things specially. There are miracles in Scripture: the parting of the Red Sea, for example, Jesus walking on water, Jesus changing water into wine. There are miraculous healings: Jesus rising from the dead, Jesus raising Lazarus from the dead, and so on. And according to classical Christians, many of them, perhaps most of them, are special divine actions. God, for example, responds to prayers. He works in the hearts and minds of his children to effect sanctification. There is, what Calvin called, the internal testimony or witness of the Holy Spirit, and there is what Thomas Aquinas called the internal instigation of the Holy Spirit. So, these things are all special actions on the part of God. God constantly causes events in the world. Ok, so far fair enough—what is the problem?

Many theologians seem to think there is a science-religion problem here. I don’t think any of the theologians of Biola think this, (I don’t know, but I doubt it) but many theologians do. For example, Rudolf Bultmann says, “The historical method,” which of course he thinks that is the method we should use, “includes the presupposition that history is a unity in the sense of a closed continuum of effects in which individual events are connected by the succession of cause and effect. This continuum, furthermore, cannot be rent by the interference of supernatural, transcendent powers.”

That’s what he says. Alright, there is this continuum that cannot be rent by the interference of supernatural (that would be God) or transcendent powers. So, it is a little bit like the laws of the Medes and Persians. You probably remember Daniel. Daniel was a favorite of King Darius, and well, the other courtiers became jealous of Daniel (they didn’t like it that the king liked him so well). So, they came to the king and said, “Oh king, live forever, we think it would be a great idea if you passed an edict to the effect that you alone can be worshipped. Everybody has to worship you and nothing else.” Well the king thought that over for a minute, and that sounded pretty good to him so he said, “I guess that it is a pretty good idea.” So he made this edict; he made this declaration: “Only King Darius is to be worshipped—no one else, nothing else.”

These courtiers knew that Daniel worshipped God, and they thought probably Daniel would keep right on worshipping God despite this edict. So they were watching Daniel, and he was, in fact, worshipping God. So they came to the king. Now the penalty for worshipping something else was to be thrown into the lion’s den and they said, “Well, king live forever, looks like Daniel has been violating this edict. You have got to throw him in the lion’s den.”

Well, the king didn’t want to do this because he really liked Daniel. He thought this was a miserable way to proceed, and he didn’t want to do it, but then they said to him, “O king live forever, and remember a law of the Medes and Persians cannot be abrogated, even by the king himself.” So once it’s put in place, not even the king himself can change it or abrogate it or go against it.

That is sort of the suggestion that you get here from Bultmann. Bultmann thinks, “Maybe God created the world and set it up in a certain way, but once he did that, not even he can interfere in it”—he uses that word interference—“not even he can do anything in it. He just has to keep hands off.” It is like the law of the Medes and the Persians.

Another theologian who agrees is John Macquarrie, who says,

The way of understanding miracle (and that would be one kind of special divine action) that appeals to breaks in the natural order and to supernatural intervention belongs to the mythological outlook, and cannot commend itself in a post-mythological climate of thought. The traditional conception of miracle is irreconcilable with our modern understanding of both science and history. Science proceeds on the assumption that whatever events occur in the world, can be accounted for in terms of other events that also belong within the world, and if on some occasion, we are unable to give a complete account of some happening, the scientific conviction is that further research will bring to light further factors in the situation that will turn out to be just as imminent and this worldly as the factors already known.

Ok again, no room there for special action. And the third thinker here, Langdon Gilkey (still another theologian), says something similar, but I will pass. I will not read that one in the interest of saving a little bit of time, but these three theologians, plus many others want to assert that there is something wrong with the idea of God acting in the world, acting in the world in a way that goes beyond creation and sustaining, or creation and holding things in existence. So they think, “Ok, God created the world; God sustains it in existence”…that is ok with them, but anything beyond that, God performing any miracles, raising Jesus from the dead, or for that matter working in somebody’s heart and mind in a special way, that, they say, is a real problem. The question is, what is the problem?

Well, the next little bit here…according to the Christian and theistic idea, God is a person; he has knowledge, loves, and hates. He has aims and ends. He acts on the basis of his knowledge to achieve his ends. He is all-powerful, all-knowing, and wholly good. Thirdly (noted above by the Heidelberg catechism), God has created the world. Fourth is God conserves and sustains and maintains in being this world he created, but fifth, at least sometimes, God acts in a way going beyond creation and conservation in miracles, but also in his providential guiding of history, his working in the hearts of people, his internal instigation of the Holy Spirit, and so on, and it is with that fifth category that these people have a problem. It is God’s special action in the world—action beyond conservation and creation—and miracles would be an example.

So we might think of these theologians as endorsing what we could call hands off theology. God has got to keep his hands off. God could create the world. God conserves the world, sustains it in being, but he can’t do anything else—that is as far as he could go. It is hands off theology, and Bultmann, even in this context, even talks about interfering. I mean if God did something in the world that would be interfering, which, when you think about it, is a sort of strange thing to say—I mean if God created the world, he is the omnipotent, omniscient, holy, good creator of the world—when you accuse someone of interfering, you are saying they are doing something they should not be doing, right?

So Bultmann thinks if God did something in the world that would be interfering, and he should be ashamed of himself. Ok, now why is this a problem? Their suggestion is that somehow it is contrary to science. It is contrary to science the suggestion that God acts specially in the world. I didn’t read that bit, but Gilkey says, "The causal nexus in space and time which the enlightenment science and philosophy introduced into the western mind is also assumed by modern theologians and scholars. Since they participate in the modern world of science, both intellectually and existentially, they can scarcely do anything else.”

From a presentation sponsored by Biola University’s Center for Christian Thought, and delivered February 12, 2012 at EV Free Church, Fullerton, CA. Used by permission.