So, I’ve decided to try a slightly different approach for the next while—one that has these sorts of folks in mind. From time to time, you can still expect those more in-depth, technical articles, or perhaps a discussion of some new research that makes the popular press, or even an analysis of some new argument from the IDM or RTB. These will be breaks from the new routine, however. For the most part, we’re going to stick to the basics, much like you would if you took an introductory evolution course at a university. Don’t worry, though: this course doesn’t have any prerequisites! All that’s needed is a willingness to learn.

What you can expect

The goal of this course is straightforward: to provide evangelical Christians with a step-by-step introduction to the science of evolutionary biology.  This will provide benefits beyond just the joy of learning more about God’s wonderful creation. An understanding of the basic science of evolution is of great benefit for reflecting on its theological implications, since this reflection can then be done from a scientifically-informed perspective. From time to time we might comment briefly on some issues of theological interest (and suggest resources for those looking to explore those issues further), but for the most part, we’re going to focus on the science. For folks interested in the interaction between science and Christianity, I heartily recommend Ted Davis’ recent series as a fabulous introduction to the topic.

You can also expect a slow, patient pace. Since this course is intended for folks with little or no background in biology, we’re going to take our time to make sure no one gets left behind. This might be frustrating to folks who already know a fair bit about evolution. Hopefully even more knowledgeable readers will learn some new and interesting details along the way—but the goal will primarily be to help folks who are less well versed in evolution increase their understanding.

You can also expect a survey of many different areas that have some bearing on evolution. We’ll examine geology, paleontology, biogeography, genetics, and a host of other topics in order to provide a “big picture” overview. This broad-brush approach means that any given individual post will not necessarily be “convincing” to folks who have doubts about evolution. Think about assembling a large jigsaw puzzle: placing any individual piece, on its own, doesn’t convincingly demonstrate what the overall picture will show. This course will be like that. Each topic we cover will put a few pieces in place here and there, slowly building towards the final overall picture.

Since evolution is an active science, this process will also highlight where there are “missing pieces” that are still being sought by scientists. All of this is well and good, since the purpose of this course is not so much to convince anyone of the validity of evolutionary theory, but rather to inform readers about the nature and scope of evolution as a scientific theory in the present day. My goal is to provide readers with a basic understanding of what evolution is and how it works. Given that as the primary goal, if one finds the scope of the evidence ultimately convincing (or not) is somewhat beside the point. The intent here is to provide readers with information they can use to make their own, informed decision.

How you can help

First and foremost, you can help by spreading the word about this series to folks you think would be interested in learning more about evolution in a non-threatening environment. Secondly, you can help me by asking questions in the comments. One of the challenges of being a specialist is having the ability to put oneself in the shoes of someone just starting out. What might seem obvious to me may not seem obvious to you, and I hope you’ll feel that no question is too basic or too simplistic. If you’re wondering about something, it’s almost guaranteed that other folks are, too! So, please don’t be shy. I’ll do my best to answer questions in the comments, though I hope that some of our more skilled commenters will (respectfully!) help out here, as well. Finally, you can help by letting me know what broader areas of evolution you find confusing. I have my own ideas about what areas of evolution are commonly misunderstood, but I’d love to hear from readers about what areas they find difficult to understand. I’ll use this input to shape the topics I will cover as we go forward.

Getting started

In the next post in this course, we’ll dive into the course content by introducing two key areas: how scientific theories work in general, and how evolution in particular works as the current organizing theory of modern biology. 

Such remnants are also found in our genomes.  Humans, unlike most mammals, cannot synthesize (make) our own vitamin C, but we carry the genes for synthesizing vitamin C.  One of these genes encodes the GLO (L-gulonolactone oxidase) enzyme, and this gene in humans contains inactivating mutations and is therefore a “pseudogene.”  This pseudogene and the genes that encode the enzymes of the vitamin C biosynthetic pathway are the remnants of our own evolutionary lineage from an ancestor that was able to synthesize its own vitamin C.⁴ Furthermore, the GLO pseudogene is just one of a graveyard of inactivated genes, transposons, retroviruses and other non-functional sequences that litter our genome.  While some of these sequences have been co-opted for particular functions, many of them have no known function.⁵ We share many of these non-functional sequences with chimpanzees.  The very presence of these genomic and anatomical flotsam and jetsam only makes sense if evolution has occurred.⁶

A third piece of evidence for evolution comes from biogeography.⁷ The flora and fauna of islands such as those of the Galápagos and Hawaii are radically unbalanced in that they lack many types of plants and animals but contain a profusion of clusters of similar species.  Hawaii, for example, has no native mammals, reptiles, or amphibians, but a profusion of fruit flies and silversword plants.⁸ One third of the 2,000 species of fruit flies are found on the Hawaiian Islands, which only covers 2 percent of the land on earth.  These islands were never connected to the continents and arose as a result of volcanic activity and were, at least initially, completely uncolonized.  The colonization of these islands occurred by means of occasional introduction of creatures from the mainland that then rapidly speciated on these islands to fill every available ecological niche.  Thus, the organisms most closely related to island species come from the closest mainland areas, and often include those creatures most likely to find their way to islands, such as birds and flying insects. 

The Galápagos Islands provide an excellent example of how biogeography provides evidence for evolution. The Galápagos have fourteen species of finch whose closest relative is probably the South American grassquit (Tiaris), yet only four of these finch species feed on seeds as finches normally do, while two others feed on cacti, seven eat insects, and another eats almost exclusively leaves.⁹ Darwin, while visiting the Galápagos, still thought that species only varied within a particular kind (though he would not have used that terminology) but could adapt to various local environments and become particular subspecies. Therefore, he originally listed the warbler finch (Certhidea olivacea) as a wren and listed the small cactus finch (Geospiza scandens) as a member of the Icteridae or the family of meadowlarks and orioles.  Only after Darwin had deposited his Galápagos specimens with the British ornithologist John Gould did Darwin discover (in a meeting with Gould that occurred during March, 1877), that his finch collection included thirteen or fourteen species of unusual finches that were all so closely related, Gould classified them in a single group all their own.  This meeting showed Darwin that the immutable barrier between kinds of species did not exist.  The Galápagos Islands were not a distinct “center of creation,” but a workshop for evolution in which an ancestral species made it to the yet uncolonized island and underwent a massive degree of speciation to adapt to the environment of the island.¹⁰ This is precisely what one would expect if the species of islands had arisen by evolution. 

A scientific theory also allows scientists to make predictions, and good theories provide accurate predictions.  Can the theory of evolution allow accurate predictions?  The answer, once again, is yes.  Darwin himself predicted that the earth must be very old for evolution to occur.  He did not know the age of the earth, but further research has shown that the earth is 4.55 billion years old, which is plenty of time for evolution to occur.  Darwin also predicted that since plants on islands were most closely related to certain mainland plant species, the seeds of these plants should be able to withstand immersion in sea water for long periods of time, and again, Darwin was shown to be right.¹¹ Many decades after Darwin, we now know that variation in organisms is due to mutations in DNA and that these mutations are inherited, just as Darwin predicted.¹² Also, Darwin’s principle of natural selection predicts that particular sequences of DNA should behave in a manner that benefits only themselves and not their carriers, which modern research has thoroughly confirmed with the discovery of transposons and other types of “selfish DNA.”¹³

Is evolutionary theory a good scientific theory?  It has been repeatedly tested for over 150 years since its inception, and it has passed those tests successfully.  The theory has been modified in response to new data, but the outlines of the theory have remained largely intact.  It has existed at risk from new data.  During the molecular biology revolution that began with the discovery of the structure of DNA by Franklin, Watson and Crick in 1953, the explosion of new data could have shown contemporary evolutionary theory to be wrong.  However, some of the most powerful evidence for the theory of evolution has come from a field of science that did not even exist during Darwin’s time.  The ability of a theory to withstand such intense scrutiny is a clear sign it is robust and enduring.  As shown, the theory of evolution has predictive power, and it also integrates and makes sense of data from several fields of science, including ecology, paleontology, genetics, historical geology, paleoclimatology, and comparative anatomy and biochemistry.  The highly integrative nature of evolutionary theory makes it a fine theory by any measure. 

In conclusion, when measured against the standards of a good scientific theory, modern evolutionary biology clearly qualifies as good science.  Ongoing debates within evolutionary biology exist about mechanism, rates, and causes, but not over whether evolution occurred.  Such a question has been largely settled by the last 150 years’ worth of research.  The future certainly looks bright for this field of science and I cannot imagine a more exciting topic to study. 

Notes

1. Davit-Béal, Tiphaine,Abigail S. Tucker, and Jean-Yves Sire. “Loss of Teeth and Enamel in Tetrapods: Fossil Record, Genetic Data and Morphological Adaptations.” Journal of Anatomy 214, no. 4 (2009): 477–501. 

2. Tian, Natasha M. M.-L., and David J. Price. “Why Cavefish are Blind.” BioEssays 27 (2005): 235–38; Yamamoto Y, Stock DW, and Jeffery WR (2004) Hedgehog Signalling Controls Eye Degeneration in Blind Cavefish. Nature 431:844–7; Jeffery, W. R. “Adaptive Evolution of Eye Degeneration in the Mexican Blind Cavefish.” Journal of Heredity 96, no. 3 (2005): 185–196. 

3. Bejder, L., and B. K. Hall. “Limbs in Whales and Limblessness in Other Vertebrates: Mechanisms of Evolutionary and Developmental Transformation and Loss.” Evolution and Development 4, no. 6 (2002): 445–58. 

4. Lachapelle, M. Y., and G. Drouin. “Inactivation Dates of the Human and Guinea Pig Vitamin C Genes.” Genetica 139, no. 2 (2011): 199–207.

5. Avise, John C. Inside the Human Genome: A Case for Non-Intelligent Design. New York: Oxford University Press, 2010.   Romano, C. M., F. L. Melo, M. A. Corsini, E. C. Homes, and P. M. Zanotto.  “Demographic Histories of ERV-K in Humans, Chimpanzees and Rhesus Monkeys.” PLoS One 2, no. 10 (2007): e1026. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0001026. 

6. Max, “Plagiarized Errors and Molecular Genetics,” http://www.talkorigins.org/faqs/molgen.

7. Coyne, Jerry A. “Intelligent Design: The Faith that Dare Not Peak Its Name.” In Intelligent Thought: Science Versus the Intelligent Design Movement, edited by John Brockman, 3–23. New York: Vintage, 2006. 

8. Kricher, John. Galápagos: A Natural History. Princeton, NJ:  Princeton University Press, 2006. 

9. Grant, Peter R., and Rosemary B. Grant. How and Why Species Multiply: The Radiation of Darwin’s Finches. Princeton, NJ: Princeton University Press, 2011. 

10. Sulloway, Frank J. “Why Darwin Rejected Intelligent Design.” In Intelligent Thought: Science Versus the Intelligent Design Movement, edited by John Brockman, 107–25. New York: Vintage, 2006. 

11. Darwin, Charles. “On the action of sea-water on the germination of seeds.” Journal of Proceedings of the Linnean Society of London (Botany). 1 (1857): 130–140.

12. Futuyma, Douglas J. Evolution. 3rd ed. Sundbury, MA: Sinauer Associates, 2013. 

13. Dawkins, Richard. The Selfish Gene. New York: Oxford University Press, 2006.

JIMMY LIN: Currently I’m on faculty at Washington University at St. Louis, where I am a research instructor in the pathology department. Also, a year and a half ago, I founded the Rare Genomics Institute (RGI)—a nonprofit that helps find cures for people with rare diseases.

ER: What qualifies as a “rare disease”?

JL: These are diseases like cystic fibrosis and Huntingdon’s disease—diseases that affect less than 200,000 Americans each year. There are over 7000 different rare diseases, and less than 5% of them have any therapy. Altogether, they affect about 25-30 million people.

This creates what we call a “long tail problem”—it’s hard for a top-down research system to create research programs for all 7000 rare diseases. So instead, we are creating a bottom-up platform from which the patients themselves can create research projects and help fund them. We connect patients with physicians and researchers, customize a research program with top medical universities, design the experiment, and then use an online fundraising platform to fund the study through [mostly] friends and family of the patient.

Basically, we create a “foundation in a box.” By partnering with the Rare Genomics Institute, patients and their friends and families who want to study rare diseases don’t have to go through the hoops of creating their own nonprofit or lab—we do that for them. So, instead of creating 7000 different nonprofits, we create a generalized platform from which studies can be conducted.

ER: Who qualifies for care through the Rare Genomics Institute?

JL: Anyone with a rare disease can come to us. The main thing we’re doing right now is diagnosis. When families come to us, they either don’t know the disease that’s affecting them or their child, or they don’t know the gene that’s wrong.

For instance, if a child had a condition that doctors couldn’t identify, his or her parents might come to us for help. What we’d do then is sequence the genes of the mother, father, and child, and compare them to reference genome to determine what mutations each of the parents have. Depending on what the disease is and what the gene causing it is, we can filter out mutations that don’t mean anything using the parents’ genomes—then, after filtering, we can potentially pinpoint the genes that fit the genetic pattern of the disease. This is the first step.

After that, we are building infrastructure to determine the effect of these changes and a way to help. For example, after looking at the literature, we can perhaps design experiments using cells extracted from the patient; this part of the process is different for every disease. Then, if we can determine that there is, for instance, a pathway missing a specific enzyme, we can try using drugs, a bone marrow transplant, or gene therapy to try to put healthy cells into the child… But there’s a variety of diseases, of course, so there’s a variety of different approaches—and we’re just starting to explore these aspects.

ER: How did RGI get started?

JL: It really started when I was in medical school at Johns Hopkins—there was this boy that came to our clinic to be seen. My research was in cancer genome sequencing, and the family had come to our department looking for answers about what was wrong with their son. At that point, the family was almost hopeless—they had gone to so many doctors, run so many tests—I decided I wanted to try to help children like this. That’s when my friends and I decided to start the Rare Genomics Institute.

Currently, there are about 50 researchers associated with the organization, and we are all volunteers. It’s growing much, much faster and been more amazing than we’ve ever imagined—we’re already making an impact. In May of last year, we were able to discover a new disease using the world’s first crowd-sourced, crowd-funded genome. Working with researchers at Yale, we delineated a disease of which our patient was the first identified.

Right now, we’re in the middle of raising funding and hiring staff to make this organization one that is self-sustaining, and to increase its impact even more.

Excerpts from Michael Hickerson Interview

MH: …you call yourself a doxologist. What’s the full term you used in your Jubilee bio?

JL: Medical and scientific doxologist.

MH: How did you decide on that term and what does it mean to you?

JL: I listen to a bunch of teaching by J.I. Packer , who teaches theology at Regent College and is one of the leading thinkers on these things. Interestingly, before any one of his classes, he says “Theology is for doxology,” and then the whole class sings the Doxology together out loud in class. I thought, “Wow, that is so great,” because everybody sometimes learns theology just for intellectual things [instead of for worship].

That’s not just true for theology, it’s for everything: biology is for doxology; chemistry is for doxology. That’s when I started to think, I should consider myself, first and foremost, as a person who praises God in what I do. And then no longer make “Christian” the adjective, right? “Doxologist” is the noun. But then what kind of doxologist am I? So I call myself a medical and scientist doxologist. I would call someone, for example, in the marketplace, a business doxologist. Or, someone who does art, an artistic doxologist. To really have the noun as our identity, and then our vocation as just a descriptor of how we do that.

MH: That’s a great point. A noun is always stronger than the adjective. So, you want that to be the focus, rather than the add-on.

JL: In our current culture, we’re defined by our jobs. It’s having a vocation. I wanted to shift away from that. I didn’t want to be a doctor first and foremost, or a scientist, but one who praises God. And evidently, within science you don’t want to call yourself a Christian Scientist. That’s another religion, so . . .

MH: [laughs] That’s right. I run into that, as well, when I’m teaching or talking about science to Christians. You always run into that stumbling block.

JL: With “scientific doxologist,” people don’t confuse them. You do have to explain what it means. And that gets in a little story actually, on what it means about vocation. It’s a small lesson — a teaching point when you do talk to people about vocation and calling. That’s why I use it.

MH: I guess my final question would be what spiritual practices help sustain you? What helps you stay in contact with God and keep a good foundation?

JL: First, I am interested in many, many different things. I sort of mix it up in terms of spiritual practices. Besides the fundamentals, of course, of quiet time, devotional reading, and scriptural reading, I do theological study because I have to do that academically. I find a lot of time with God through the spiritual disciplines, such as times of solitude — which is very interesting for someone who is in academics to no longer think about ideas but just to be quiet before God — how silence, time to think by yourself, or sitting in silence is also something you should foster.

In terms of spiritual formation, what you really need is definitely a good community of people. I have a very supportive community at my church. I’m the deacon of devotions, so that of course keeps me on track. It encourages me as I, in my own spiritual walk, encourage other people. Fundamentally, I think for all Christians, whether you are academic or no matter your vocation or calling, being in the Word and prayer are the most important things. Doing that and being spiritually fed is what is important.

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.

DOUG LAUFFENBURGER: It could look like a lot of things. One way to envision what I mean is to put yourself back a hundred years. For instance, in 1913, an electronic computer was unimaginable. But using physics, quantum physics, leading to semiconductors and devices like that, people figured out over the next 20 to 30 years how you could build a machine to do calculations and so forth. And then, of course, all sorts of thing happened…

We’re roughly at that stage with biology, even though it seems like things are more imaginable because—and we don’t have to go strictly century by century here—because we can already guess the way some things might change, whereas in 1913 there was no inkling, really, as to what would happen in the computer revolution.

So, to enumerate some of the things that are conceivable—let’s just start with computers, because we were just there.

There’s a notion that computers get faster and cheaper by making their logic gates smaller, and how you improve a design with physics keeps bumping up against how you make these little units smaller. Well, using biology, the solution seems self-evident—you just line up the pieces of DNA, and if you put the right pieces of DNA in the right places, the resulting parts are so much smaller than the things we can do with physics. You can imagine, even though it’s just a theory now, computers continuing to become many times smaller and cheaper—and be made via environmentally benign manufacturing processes—through biomolecular construction.

Now that’s exciting from one point of view, but from another, it’s not that revolutionary, because you’re just using DNA as a piece of physics. It’s not really biology—it’s merely a biological molecule being used to make better physics.

For a different example, if you think about the way we make things, the way we manufacture plastics, gasoline, energy—we have to do all that using chemistry, and to make that chemistry happen, we have to input a lot of energy—in fact, one of the most costly industries in terms of energy usage is the energy industry. You have to put in so much energy to refine petroleum and things like that. And to make plastics, ceramics—things of that nature—is also very energy intensive, and it’s also where a lot of pollution comes from, because you’re mixing together all these chemicals that really didn’t want to be mixed together. You get what you want, but you get a lot of byproducts, toxins, etc.

Well, people have started to realize that a lot of this work can be redone through the use of biology. You can turn corn into fuel or plastic, and you can make magnetic or electrical storage devices out of biological units (viruses can pattern the crystals, so instead of using mixtures of toxic chemicals, you just pull the viruses with the right properties together). Right on this tabletop, you could make materials that by current manufacturing processes would otherwise cause a great amount of environmental hazard.

As for another exciting development—well, to preface, one of the problematic things about modern agriculture is the necessity of using fertilizers (there are insecticides to be concerned about, too), but fertilizer manufacturing is terrible for the environment. You have to make fertilizer out of ammonia and that’s a horribly polluting and energy-intensive manufacturing process. What you could potentially do, instead, is program into bacteria the genes that take nitrogen out of air, turning it into organic nitrogen then just scatter the bacteria onto the field—and you wouldn’t need to make ammonium using the current very caustic processes.

These are the sorts of things I mean—and we haven’t even touched on medicine, yet. People tend to think about medicinal advances, first, but before you even get to medicine, you can think about energy, manufacturing, materials, and agriculture. In 50 years, we should be able to do things in ways we don’t do them now, that will be cheaper, less toxic, less polluting, more efficient, and so forth.

ER: A lot of people are nervous about the idea of “programming” life. Can you respond to this fear as a Christian?

DL: As a Christian, I would say that God gave humankind dominion over the earth, to do good things—he gave us minds, a passion for understanding how things work, and then he put in this world all these fascinating processes, which, if we figured them out, we could do good things, could feed more people—could feed more people without causing extensive damage to the environment. And cure disease and injury. And the list goes on. I think all that is good, and that God would be pleased that we would be using His creation to live better—I’m not saying more luxuriously, but more happily, contentedly, with each other.

ER: But back to the topic—advances using biology in the next century. You had just mentioned medicine…

DL: So, yes, there’s also medicine. Now, obviously, in thinking about this, the use of stem cells comes to immediately the fore. There are a lot of diseases out there that you really do need to correct using cellular processes. Right now, we try to make these corrections through chemistry. For instance, we give you a pill, and that pill should interfere with something that’s going wrong in your body—and yet it’s really never adequate to just interfere with something that goes wrong in the body, because you don’t really set it right just by getting in the way of it.

The opportunity with stem cells is that you can say, “I’ll replace the cells in the body that are doing something wrong with cells that are actually doing it right again.” If you program cells to be neurons, heart cells, or bone cells, you can regenerate properly functioning physiology. Rather than, say, replacing a hip with a metal part, you could regenerate the bone, itself, or you could regenerate neurons in Alzheimer’s patients. Never in the past has medicine been able to regenerate a proper physiology; it’s only tried to replace it with an inadequate surrogate, or minimize how much damage a disease is doing. With the use of stem cells, you can actually imagine returning the body to its proper physiology.

A different use of stem cells is to generate human tissue in the laboratory for better studies of human physiology and pathology and improved testing of drug effectiveness and toxicity.  This will be a major advance over animal models, because of the significant disparities between animal physiology and human physiology.

A key point to emphasize is that there are different kinds of stem cells, which involve big differences in potential concerns. For Christians, clearly, stem cells derived from embryos present a tremendous ethical issue. Fortunately, a good proportion of stem cell technologies can be pursued using stem cells from adult tissue. These cells can be stimulated to develop into certain tissue-specific physiological behavior, or can now even be “re-programmed” to become quite similar to the more broadly flexible stem cells derived from embryos but now not requiring the embryonic source. Happily, the days of reliance on embryo-derived stem cells appear to be over for purposes of beneficial technologies.

We also should consider genomic medicine, and what’s attractive about that field is that with the way we do medicine now, which is chemistry-based—say you have a disease, and we might give you a pill to correct it—well, the biggest problem with that is that while I think this pill will help ameliorate your condition, maybe it won’t. Maybe that drug only works in ten percent of the patients and not ninety percent.

For example, consider cancer. You’ve got a particular kind of cancer, and we prescribe a certain treatment… well, hopefully you’re among the lucky ten percent, and you’ll be in much better shape in two or three years. If you’re not, then we’ve wasted your time. In fact, we’ve probably hurt you rather than helped you, because we’re using chemistry to interfere with things, and even though we might be reducing the damage of some things, we’re probably causing toxicity elsewhere in the system, because that same chemistry is also interfering over there.

So the value of genomic medicine is to get enough information about you through sequencing your genome that we can say, “Ah, for you this particular pill is not a good idea; it will actually do more damage than good. But for your brother, it’s likely to work, and the ratio of benefit to harm is much better.” This is the reason genomic medicine is more imminent—it’s what’s closest on the horizon to being realized—because we can use the same drugs we have now, we’ll just be using them more effectively. At the moment, we can sequence genomes, and we do have these treatments that help, and it’s just a matter of matching up these two technologies.

Now, on the other hand, when you think about genome sequencing, you can find out all sorts of things, and you have to decide, “What if I learn something negative?”

EDITOR’S NOTE: Join us next week as we continue the conversation about genomic medicine, bioengineering, and being a Christian in science.

That said, I genuinely empathize with those who are reluctant to abandon traditional theological concepts for newer, still- developing ones. Given spiritual leaders’ biblical mandate to protect their families and congregations against error, a responsibility for which God will hold them strictly accountable (James 3:1), I respect their refusal to expose their flock to ideologies they regard as conflicting with the Word of God.

I further understand pastors and theologians’ resistance to tethering theology—which is meant to provide a solid epistemological foundation—too closely to that intrinsically dynamic endeavor called science. All humans need ideological stability, perhaps especially so with respect to spiritual matters. Recognizing this, pastors rightly ask why they should abandon or substantially revise an internally-consistent systematic theology that has served the church with relative stability for many hundreds of years. Science, on the other hand, is a realm for adventurers, groundbreakers, and ideological athletes intent on not just polishing or expanding today’s body of knowledge, but shattering it when necessary. Resounding with the jousts and clashes of competing ideas and arguments, and the stunning reversals of ideas once widely held, science often appears to be a messy–even tumultuous–business. Spiritual shepherds are insistent that the epistemological dynamism that necessarily characterizes science never become the mainstay of the Christian experience, which must be fundamentally stable and dependable. They see wisdom in maintaining a safe distance between the Church and the choppy waters of science.

The question, then, is whether the waters of scientific thought, particularly with respect to the age of the earth and evolution, have sufficiently smoothed out to warrant conservative thinkers’ taking a deeper look. Of course, the catch-22 here is that this can’t be answered without actually embarking upon an expedition of exploration and investigation, much as I recently did. Once undertaken, however, the conservative explorer will likely be confronted by a formidable problem:

As I can personally attest, navigating the crowded forum of wildly-differing ideas as to how to resolve the faith-science divide can be terribly daunting. Making this especially disconcerting for the conservative is the sobering reality that amidst the chorus of conflicting theories, one finds very little substantive published input from respected conservative theologians. As a result, the conservative seeker is sure to find herself awash in an ocean of seemingly novel theological “solutions” that are fundamentally antithetical to her evangelical sensibilities. This is likely to result in the impression that there is in fact no way to reconcile the findings of modern science with the key doctrines of orthodox Christianity, and hence the termination of the endeavor. Not only was this dynamic a constant challenge to me, but has proved a stumbling block to many would-be seekers that I personally know.

Whence then change? I believe the breakthrough will begin with a particular subgroup of conservative evangelical pastors, elders, and theologians. I know firsthand that there are many who, truth be told, have not been entirely at peace with their fellow conservatives’ summary rejection of—and apologias against—the findings of mainstream science. They have a gnawing sense that devastation looms for the Church and her children unless detachment yields to engagement, and rhetoric to substance. These have likely admitted to themselves that despite stridently asserting anti-evolution/old-earth views, they actually don’t understand these views in depth (nearly every conservative pastor and elder I’ve spoken with has conceded this). To date, these shepherds and thinkers have remained silent about their misgivings, reluctant to be perceived by their congregations and peers as betraying true Christianity. Given the astonishing fruitfulness of modern science and the comparative barrenness of young-earth creationism, I believe these evangelical leaders may now finally regard themselves as justified in stepping forward and publicly questioning whether the latter is in fact the view that a truth-revealing God would have His people believe.

Indeed, if I may, I would exhort these, my fellow conservative evangelical shepherds and thinkers, to set aside all reticence and fear, emerge from anonymity, and storm the forum of discourse, engaging this most pressing matter with vigor, equanimity, and humility. In doing so, know upfront that there will be few handrails to guide; you will not be building upon an extensive precedence of published conservative thought. Rather, you will be pioneers, with the open prairie of contemplation and consideration before you and the Word of God as a faithful, orienting star. The journey will be at times confounding, often scary, and never without challenge. Yet only through such robust, self-critical analysis will you find yourself in a posture where God can correct and refine all that He would, and only after which will you be able to pass on to your flocks a cogent, truly harmonious portrait of our Lord and His Creation that finds rich consistency between His written and natural revelations. I firmly believe that the fuller, more deeply informed portrait of the Lord and His universe that emerges from this investigation will fill your congregations with an unprecedented new sense of awe at our beloved God as Creator, and profoundly enhance their worship of Him. This has certainly been the result of my own journey.

In this video Conversation, Denis Alexander addresses two prominent barriers for Christians to accept evolutionary creation. The first is Biblical interpretation. When contemporary Christians interpret the early chapters of Genesis literally, they do so out of a desire to take the text seriously. Yet the early church fathers saw these chapters as figurative—and that figurative interpretation did not lesson the important foundational truths taught in these passages. The contemporary literal reading is actually a modern approach to the text in that our scientific mindset inappropriately shapes the interpretation. Since science did not even exist at the time that Genesis was written, an overly literal interpretation can actually cause us to miss the inspired message that the Biblical authors were communicating.

The second barrier is the rhetoric of the New Atheists, who claim that it is impossible to accept evolution while still believing in God. Christians should challenge this. Traditional Christian views are not in conflict with modern science. Instead, they see nature as God's work, with St. Augustine writing that "nature is what God does." As humanity develops a scientific understanding of nature, we will only learn more about the handiwork of God. 

The majority of health care workers deal with the confusing issues of life, death, and the apparent random tragedy of disease that can devastate families emotionally, financially, and spiritually. In fact, when I separate myself from the sterile aspects of a lab test review or ordering of radiographic images, I often find myself extremely saddened by the reality that children suffer from chronic disease, and in that aspect, I have found my faith to be a salve for me. I have been involved in the field of medicine for a relatively short time, only 21 years since first starting medical school. I marvel daily about the advancements of this tool that we have named “modern medicine”. Indeed, in the past 20 years alone, the progress we have made in the diagnosis and treatment of cancer, cardiovascular disease, and infectious disease has been seemingly unstoppable. Despite these advances, we have not adequately addressed how we handle various aspects of suffering (physically, spiritually, and mentally) in long-term hospitalized patients, in patients with chronic disease, and in the elderly.

I have often been asked if my faith has been affected by being exposed to illness and death. I would resoundingly say “No”, but I know health care workers run the entire gamut of a belief in God. There was a time when I would have said otherwise; however, my lay interest in the processes of our Earth (biologic and geologic) has convinced me of a Creator. I am a Christian, and this essay will discuss how I use my scientific and medical background to justify my faith. If you are an atheist reading this essay, you will have realized that you and I have belief differences from the beginning of this writing. If you are an evangelical Christian, I want you to realize that I am not going to talk about my conversion or my baptism. That aspect of my life is not the point of my essay, but you should know, for background, that I do accept Jesus Christ as my Savior.

I was born and raised in central Texas where a large percentage of the population is evangelical Christian. As I progressed through public education, I had convinced myself that I was agnostic. This was a personal decision, not based on any family influence. In fact, I had Christian parents who were educators and who had an interest in my pursuing a science career as a way of opening my mind to the needs of humanity and intellectual fulfillment. However, my trail away from my Christian faith lasted about 15 years and was most influenced by many of my evangelical classmates, especially in high school and college. I was exposed to Young Earth Creationism (YEC) by many friends, and at that time, I did not think it was even possible to reconcile a Christian faith with my interest in science.

In particular, I was interested in pursuing a career in paleontology or ecology, and I became even more convinced in college, that I had to make a profound choice – either I chose a career in science and reject YEC claims that had no basis in reality, or I would have to abandon a science career all together. I was only aware of those two options at that time and was not aware of a third way leading to a reconciliation of my faith. I will admit that I was fairly angry about the absolutism provided by so many of my YEC-minded friends in the face of massive amounts of biologic and geologic data. I became angry about the concept of religion in a very self-centered sort of way. Eventually and after much contemplation, I ended up going to medical school after college as opposed to a career in natural history, as I decided that the job market was more stable in medicine.

Two particular events enabled me to completely reconcile my faith with science. First, I took a field research class that involved traveling through the southwest United States during the summer of my junior year of college. Seeing geologic layering and signs of erosion up close in areas such as the Grand Canyon and Bryce Canyon, as opposed to hearing about the concepts in the lecture hall, made me truly appreciate deep time (Figure 1). For example, although random events over millions of years formed beautiful geologic structuring of hoodoos in Bryce Canyon, the wind and rain making these amazingly beautiful sandstone columns spoke of the mechanistic properties of erosion. Seeing the effects of long-term erosion as being “beautiful” led me to wonder in my tent at night why consciousness was formed to allow humans to appreciate the majesty of nature. I was able to see the Milky Way at night as I camped in the various national parks, and I further contemplated the mechanisms of gravity, light, and star formation. I was captivated by this imposed beauty on the desert floor around me, the stark ruddy canyon walls, the conifer-filled woods, and the cloudless night with a waning moon. I kept a journal during my trip which I wrote in daily. I have read it again years later, and there are passages written, crossed out by pen, then written out again with some my first inklings that I likely believed in a Creator God.

Figure 1: In this picture, I am showing my daughter the various rock groups of the Grand Canyon at Grand Canyon National Park in Arizona. My visit to the canyon in college brought home to me the immensity of deep time and the beauty of a natural structure suggesting to me, in a strong way, that God must exist. When this picture was taken, I wanted my daughters to see what I saw, felt what I felt, thought what I thought, when I began to really be convinced there was a Creator.

The second aspect that brought me back into Christianity was exposure to a pastor in my late 20s. At this point, I was deep into my medical training as a pediatric gastroenterologist, but I was starting to attend church again, although not regularly. I also was working in a lab where we were using “knock-out” mice (mice with a gene removed to assess the resultant phenotype, or the observable traits) in order to determine the mechanisms of cirrhosis of the liver. Although my contribution to the lab was not ground-breaking, I was fascinated as to how a single gene deletion could lead to down-stream effects, including morphologic changes in the liver (i.e., cirrhosis). My research had demonstrated that specific gene mutations were leading to a diseased organ, and I came to believe that the genetic code encompassed in all living creatures was not likely explained as a random, undirected process.

The pastor with whom I was interacting with at that time had trained in astronomy prior to going into ministry, and it was fascinating to hear him reconcile his belief in an ancient universe with his faith. He was not the least bit worried about an ancient Earth and a far more ancient universe. He believed in a Sovereign God who could certainly provide for the mechanisms of the Big Bang and the resultant world that we live in. Over the months, my discussions with him led me back to reading my Bible daily for the first time, really, in my life. In my very humble and limited opinion, I could see that God, especially through the Gospels, provided an answer to what my purpose consisted of during my time here on Earth. I was to love and serve others as best I could, and I should let God be in control of the big stuff of life.

Here in the lab (and previously for me in the American southwest) there appeared to be sublime mechanisms at play in the world. Even when I looked at random processes (and I do believe that God allows randomness), the grandeur of life forms that have been present on our planet for hundreds of millions of years fascinated me. I did try to convince myself that randomness was evidence of no God, but I then decided that a Creator could certainly build randomness into any biologic or geologic system to allow for the abundance of detail that we see in the natural world around us.

Taken together, all of these views of the world in the micro- and macro-scale convinced me to come back to Christianity. I believe strongly that there is God who has allowed natural mechanisms to take place, random or not so random, which are exhibited throughout the universe. I certainly know that my wife, my children, and I will die someday, but a re-reading of the Gospels as well as reading the great Book of Nature around us reinforced in me that there was something more for all of us, even after death.

I have never regretted the re-discovery of my Christian faith. I especially take these thoughts with me, when I have to talk to families about sick or dying children. These are hard conversations to have, and I find comfort knowing that evidence of a creator God is ever present around us, even as each of us heads towards the end of life and subsequently, eternity.

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

For more than a century, evangelicals and fundamentalists have typically rejected both evolution and higher biblical criticism. Sometimes there are good reasons: the claims of some biblical scholars are so outrageous and the claims of some scientists so anti-religious, that a strongly negative response is entirely appropriate. Too often, however, the evangelical encounter with modern science conforms to what historian Mark Noll has called “the scandal of the evangelical mind”—namely, “that there is not much of an evangelical mind.” Attitudes toward science have been crucial to this analysis. As Noll says, “since 1960 creationism has done more than any other issue except abortion to inflame the cultural warfare in American public life.” (p. 192)

Readers who want to know more about Noll’s book and its reception should go here and here. His conclusions about evangelicals and science are fully consistent with those I am about to present.

Evangelicals in Tension with Science

Evangelicals exhibit considerable tension and ambivalence when it comes to science, especially human evolution. On the one hand, evangelicals enthusiastically embrace the findings of science, when it comes to most applications in medicine and engineering. They also accept the experimental sciences, such as physics, chemistry, physiology, or thermodynamics. They have no problems with gravitation, the periodic table, the circulation of the blood, or the law of entropy. Here, their attitude is highly empirical: if it can be shown from repeatable experiments and observations, it’s true and presents no challenge whatsoever to religious belief.

On the other hand, evangelicals are quite hesitant to accept some conclusions of the so-called historical sciences, such as geology, cosmology, and evolutionary biology. Fundamentalists reject the very legitimacy of those sciences, and have created their own alternative explanation, “creation science,” which comports with their particular views of biblical authority and hermeneutics. Evangelicals are more ambivalent. As we’ve seen, many evangelicals accept the big bang and modern geology, with a 4.65 billion-year-old earth and the enormously long history of living things before humans arrived on the planet. But evolution–understood here to mean the common descent of humans and other organisms–presents very serious problems for many, perhaps most, evangelicals. This motivates them to look for alternative views.

The alternatives evangelicals embrace are precisely those we have studied in this series. Some eagerly support the YEC view. Others prefer one of the many varieties of the OEC view. Many like the strident tone of the ID movement, with its vigorous assault on biological and cultural “Darwinism” and its near-universal rejection of human evolution. For most evangelicals, however, TE is probably not a viable option at present, for biblical and theological reasons.

Reconciling Evolution with Scripture

Most evangelicals do not see any reasonable way to combine human evolution with the following beliefs:

• the uniqueness of humans, who alone bear the “image of God”
• the fall of Adam and Eve, the original parents of all humans, from a sinless state, by their own free choices to disobey God
• the responsibility of each person for their own actions and beliefs, within a universe that is not fully deterministic
• the redemption of individual persons by the atoning sacrifice of Christ.

Evangelicals cannot and must not be separated from these crucial beliefs about human dignity, freedom, responsibility, sin, and redemption. The 64-dollar question is: can these beliefs be maintained without simultaneously affirming the necessity of an historical, separately created first human pair? The answer is probably in the hands of evangelical academics, especially theologians and biblical scholars. Can they be persuaded that the scientific evidence for evolution is sufficiently strong to warrant a re-examination of the traditional view? Can a credible gospel and credible science be harmonized?

There exists an enormous gap between popular conceptions of science–conclusions, methods, and attitudes–and those of scientists themselves. This gap is not unique to science among practitioners of specialized knowledge, and it is not unique to evangelicals among the lay public. But it is real and very significant, and it affects theologians and biblical scholars no less than anyone else. Those who try to bridge this gap are mostly scientists (in their role as educators at colleges and universities and insofar as they write books for lay readers) and science journalists. Many influential members of those professional communities are skeptical or even strongly hostile toward Christian beliefs, and this can exacerbate an already difficult state of affairs. If ways can be found to popularize good science, while showing appropriate sensitivity to the concerns of evangelicals, it would be a very good thing.

Signs of Hope

Certainly there are reasons to hope. The conversation about science and religion is considerably broader now than it was at the time of the Scopes trial in 1925. Back then, many Protestants faced a very grim choice. On the one hand, they could follow politician William Jennings Bryan and the fundamentalists, rejecting modern science in the name of biblical authority and orthodox beliefs. On the other hand, they could follow theologian Shailer Mathews and the modernists, rejecting biblical authority and orthodox beliefs in the name of modern science. There was no one out there like John Polkinghorne, Francis Collins, Joan Centrella, Owen Gingerich, Simon Conway Morris, William Phillips, or Ian Hutchinson—to name just a few of the many top scientists today who accept evolution while affirming the divinity of Jesus, the bodily resurrection, and the actual divine creation of the universe. But they are all scientists, not theologians (except for Polkinghorne, who is both). In Galileo’s day, it was the scientists who eventually convinced the theologians and biblical scholars to accept Copernicus’ theory of the earth’s motion around the sun. But, it took a long time, and the process was difficult and often painful. Thus far, the biblical scholars and theologians who have tried to move the conversation forward have not been very well received, as Richard Ostling has so capably reported. I suspect we are in for more of the same.

It’s Your Turn to Talk

That’s what I think. What do you think? I’ll mainly be listening quietly, since I’ve now said all I wanted to say. Thank you all for hanging in there for ten months—far longer than I had originally anticipated. After a short respite I’ll return with a new series, but I’ll keep the topic under wraps for the time being.

The tenth anniversary of the human genome has been marked by some striking new genetic insights into human evolution and diversity. Do these new discoveries have any significance for the dialogue between science and religion in general, or for our sense of human uniqueness in particular?

The publication of the Neanderthal genome sequence in May 2010 set the pace. Not surprisingly -- given that our last common ancestor with the chimpanzee was around 5 to 6 million years ago, compared to a mere half a million years for our last common ancestor with the Neanderthal -- it turns out that we are genetically far closer to the Neanderthals than to the apes. In all, only seventy-eight changes in the genetic letters ('nucleotides') that would change the amino acid sequence of particular proteins were found in the Neanderthal DNA that were the same as the chimpanzee sequence but different in the human. Amongst other differences, 111 duplications of small DNA segments were found in the Neanderthal but not human sequence. Genetically we are closely related twigs on the great evolutionary bush of life.

But we knew that already. More surprising for many was the provocative finding that non-African humans are genetically closer to Neanderthals than African humans. In fact, the European and Asian genomes that were sequenced appear to contain one to four percent DNA of Neanderthal origin, and the gene flow that occurred appears to have been almost entirely from Neanderthal to human, rather than vice versa. How come? The most likely scenario is that there were a few instances of sexual reproduction between Neanderthals and human individuals belonging to the population that is thought to have emigrated out of Africa to populate the world sometime after seventy thousand years ago, explaining why the Neanderthal DNA sequences are not found in African genomes. The contribution of the Neanderthal genome has remained in European and Asian populations ever since.

To put this in perspective, most of our genes are very similar anyway to those found in Neanderthals and chimpanzees, and to other mammals like mice. We all share a "how-to-build-a-mammal" instruction manual, and the relatively minor genetic differences between us (minor relative to those we share in common) are the icing on the cake, as it were, that make us a human rather than a mouse, a chimp or a Neanderthal.

The year 2010 saw yet another twig appear on the hominin branch of the evolutionary bush, this time one even closer to the Neanderthals than our own. This story begins with the discovery by a Russian team of a sliver of finger bone from a remote Siberian cave in the Altai Mountains, known as the Denisova Cave. The team stored it away, thinking it was from one of the Neanderthals that frequented the cave between thirty thousand and forty-eight thousand years ago. But when DNA extracted from the bone was eventually sequenced, the results -- published just before Christmas -- revealed a population distinct from both humans and Neanderthals.

The finger appears to belong to a novel hominin population that shared a last common ancestor with Neanderthals more recently than humans, and overall is genetically closer to Neanderthals than to humans. It is too early to say whether the so-called 'Denisovans' represent a separate species and fossil data will be required to clarify that question. But what the results do suggest is that Melanesians -- the inhabitants of Papua New Guinea and islands northeast of Australia -- have inherited as much as one-twentieth of their DNA from the 'Denisovans', indicating that some limited inter-breeding took place between these ancient populations. Most fascinating of all is the idea that multiple hominin lineages were coexisting in Europe and Asia, along with modern humans, as recently as twenty-thousand to forty-thousand years ago.

Do these findings have any particular theological significance? It is difficult to know why this should be the case. In the Judeo-Christian tradition humankind uniquely is made "in the image of God". The suite of capabilities that emerged during human evolution is necessary but not sufficient to do justice to this much discussed theological insight. Our particular genetic instruction manual generates large frontal lobes, advanced cognitive abilities, rationality, language, consciousness and the ability to choose between right and wrong. It is this suite that gives us the ability to pray, worship and engage in communal religious practices.

But the idea of being made "in the image of God" is not encompassed simply within a static list of such human qualities. Theologians have drawn attention to the dynamic, relational aspects of the concept. It is humanity-in-relation-to-God, together with God-given responsibilities to humans in relationship with each other, that are thought to be more central to the idea. When did such spiritual capabilities and responsibilities first come into being? It is really difficult to know, but the answer certainly seems more rooted in God's intentions and purposes for humankind than in genetic change per se. Students can spend a long time being trained in the finer points of drama, but the play only gets off the ground when the actors are finally given their lines.

It seems quite likely that more twigs will continue to appear on the hominin branch of the bush of life as genomics continues to extend its reach. Such discoveries as such do not appear to raise any new theological questions. But other 2010 discoveries did highlight two genomic insights that do have relevance for religious views of human identity. The first insight comes from further Genome Wide Association studies that continue to subvert any lingering commitments to genetic determinism, for example the idea that there are genes "for" a particular human trait. The second insight comes from the finding that we are all more genetically different from each other than we realized even a few years ago. Genetics is underlining the uniqueness of each human individual. By the end of 2011 it is estimated that more than 30,000 human genomes will have been sequenced. Watch this space. Theological reflections on these findings will be the topic for Part 2.

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.

Introduction

One of the reasons that some of us are hesitant to accept evolutionary creation is that it seems to make God responsible for the suffering and death of innumerable creatures over millions of years—before humans ever existed or sinned against their creator. Since we believe in and worship a God who is loving, benevolent, and all-powerful, it sounds quite implausible that our God would have created a world like that; therefore, any scientific evidence for evolution must be incorrect.

Other people look at the scientific evidence for evolution and find a compelling case that it has taken place during our earth's history. On this basis they may conclude that if evolution is true, then the belief in an all-powerful, perfectly good God must be false!

The trouble with both of these views is that they tend to invoke a completely abstract, philosophical god, not the living God of the Bible—the God who became a human being, experienced unimaginable suffering, and died in a grotesque and humiliating public display. The death of Jesus completely defied the expectations (and common sense) of his followers, as well as the expectations of any “rational” understanding of the way the Creator of the universe should act in the world. On the cross, in the person of Jesus, God took upon himself far more suffering than any creature has ever experienced.

If God himself is willing to die, particularly in such a gruesome way, then perhaps we should at least consider the possibility of God allowing the death of other creatures, too. But would this really be compatible with what we know of God through Scripture? In this essay, we will explore this quandary through a “theology of the cross”, a concept articulated by pastor George Murphy in his book Cosmos in the Light of the Cross.¹

Theology of the cross

Before we jump into the theological problems associated with evolution, let’s take a look at how we understand Christian theology itself. For the reformer Martin Luther, any theology (or science) that tries to reach knowledge of God apart from the cross is bad theology.² Instead, Luther pointed to a theologia crucis, in which the true God is seen first and foremost “through suffering and the cross”. To make his point even clearer, Luther insisted that “the CROSS alone is our theology”.³ It is the lens through which we view everything.

Of course Martin Luther, having lived in the 16th century, was not aware of the vast history of life on our planet (or any other aspect of modern science, for that matter), but George Murphy draws from Luther’s teachings the foundation that all human knowledge begins with the Word made flesh and crucified.⁴ With the cross of Christ as the ultimate framework through which we view reality, we are bound to view the processes of nature quite differently. As Murphy explains it,

A theology of the cross is an explication of belief in a God who becomes a participant in the history of the universe and thereby shares in the suffering, loss, and death that are part of worldly experience.⁵

God does not sit idly by and watch unaffected as his creatures suffer, but neither does he swoop in and make everything completely effortless and easy. Instead he chose another way, the crucifixion of Jesus—certainly not the approach that we would have preferred! The apostle Peter went so far as to try to talk Jesus out of it, but he was met with a stern rebuke (Matthew 16:21-23).

Why is evolution so disconcerting to Christians?

The problem of suffering throughout all of human history is troubling enough for us to reconcile with a loving, personal God. But in addition to that, the discovery of vast numbers of fossils reveals that death has taken place on a far greater scale than we had ever imagined. Both the wide variety of extinct creatures and their sheer numbers is quite staggering, and it raises questions about our Creator:

The picture of a God who is immune from suffering and death but who forces organisms through millions of generations and extinction is disturbing to those who believe in a God of love.⁷

The mass extinction of life on earth was already well established by the early 19th century—decades before Darwin’s research—and extinction can be empirically verified independent of any theory of evolution.⁸ The fact that the earth’s crust is a veritable graveyard of long-lost creatures is deeply troubling, and as late as the 1790’s, distinguished intellectuals such as Thomas Jefferson denied the very possibility of extinction.⁹

But in addition to the reality of species extinction, the theory of evolution by natural selection proposes that new species also arise in an environment containing widespread pain and death. Both the creatures that are now living and those that are gone are tainted by an “acrid smell of death”.¹⁰ It makes us wonder, if our Creator is not the God of the dead, but of the living (Mk. 12:27), where is God’s presence in the evolutionary picture?

In all honesty, creation through evolution is not what we would expect from God, but Scripture is full of examples in which God acts in unexpected ways. After all, God’s choosing to undergo an agonizing death on a cross is not what we would expect from the all-powerful Creator of the universe, either. In both cases, new life comes about through pain, suffering, and death. As George Murphy puts it,

A priori ideas about God have to be overcome, and God's character has to be learned from God's self-revelation.¹¹

God’s fullest self-expression is in Jesus Christ himself, one who is intimately familiar with and personally endured creaturely pain and death. The theology of the cross reveals that God's self-revelation takes place in situations of suffering, loss, and apparent hopelessness, much like situations that occur through natural selection.¹²

The crucifixion is disconcerting too

Not only is creation through evolution an unexpected and unsettling process, but so is the crucifixion of Jesus! Killing someone by hanging them on a cross is an unbearably painful, prolonged, humiliating form of death. It was such a horrific type of public execution that it wasn't until after the Roman Empire stopped the practice of crucifixion—and people no longer witnessed it personally—did the cross become a visual object of devotion.¹³ Our culture is sufficiently removed from crucifixion that we are desensitized to its original significance, but to connect it to our current context, imagine the reaction you would get by wearing jewelry designed to look like an electric chair.¹⁴

Once we are more attuned to the brutality of crucifixion, it seems all the more striking that the cross is the sign of God’s work, what George Murphy calls “the trademark of God”.¹⁵ The suffering and death of Jesus is featured prominently in the Gospels, but the crucifixion-resurrection pattern is strongly resonant within the Old Testament, too. Israel suffered and toiled as slaves in Egypt for centuries before they were rescued in the Exodus, bringing life to a people who were spiritually dead. Centuries later, the nation of Israel would experience death again when the Babylonians destroyed the Davidic monarchy, burned their Temple, killed their people, and sent many into exile.¹⁶ Neither Israel (God’s chosen people) nor Jesus (God’s own son) were spared from death and suffering; rather, suffering seems to have been the way in which God re-forms and renews humanity to fully bear His own image.

Redemption extends to all of creation

Fortunately, God’s story does not end with death. God gives new life after his creatures have been subjected to terrible circumstances. Redemption was promised to Israel itself—Ezekiel’s vision of the valley of dry bones describes how God would renew His chosen people (Ezek 37:1-14). Later, the astonishing resurrection of Jesus made salvation possible not only for Jews, but for all people in Christ (Gal 3:26-29). Ultimately, the New Testament makes it clear that God’s renewal will encompass the entire Creation:

For God was pleased to have all his fullness dwell in him, and through him to reconcile to himself all things, whether things on earth or things in heaven, by making peace through his blood, shed on the cross. (Colossians 1:19-20)

With all wisdom and understanding, he made known to us the mystery of his will according to his good pleasure, which he purposed in Christ, to be put into effect when the times reach their fulfillment—to bring unity to all things in heaven and on earth under Christ. (Ephesians 1:8-10)

Christians are accustomed to thinking of the death of Christ in regard to humans, but our culture rarely acknowledges God plan for the redemption of His entire creation. This is partly attributable to the fact that discussions of creation and origins are often separated from the topic of salvation.¹⁷ In doing so we tend to marginalize Jesus as we argue about Genesis. Rather than fall into this trap, if we view nature through a theology of the cross, we will see Christ as both the alpha and the omega point in discussions of life’s history and life’s future. With this perspective, we are more apt to sense our solidarity with the rest of creation as we wait in eager anticipation of a glorious future:

The creation waits in eager expectation for the children of God to be revealed. For the creation was subjected to frustration, not by its own choice, but by the will of the one who subjected it, in hope that the creation itself will be liberated from its bondage to decay and brought into the freedom and glory of the children of God. (Romans 8:19-21)

Conclusion

As part of the Church’s conversation about the problem of natural evil, this essay is meant to be a brief introduction to a “theology of the cross”. One can explore this concept in greater detail in Murphy’s book The Cosmos in the Light of the Cross. While there is a lot more to be said, let me conclude with the following observation: though evolution may not be compatible with some interpretations of Christianity, evolutionary creation is certainly compatible with the crucified Christ and the theology of the cross. In the person of Jesus, God suffers with the world and ultimately redeems it. As George Murphy puts in, “The world's pains are God's stigmata.”¹⁸

Explore this Topic Further

• Miller, Keith. “And God saw that it was good”: Death and Pain in the Created Order. BioLogos series
• Murphy, George L. The Cosmos in the Light of the Cross. Harrisburg, PA: Trinity Press, 2003.
• Murphy, George L. “Cross, Evolution, and Theodicy: Telling It Like It Is”. In The Evolution of Evil. Edited by G. Bennett, M.J. Hewlett, T. Peters, and R.J. Russell. Göttingen: Vandenhoeck & Ruprecht, 2008.
• Southgate, Christopher. The Groaning of Creation: God, Evolution, and the Problem of Evil. Louisville, KY: Westminister John Knox Press, 2008.

Notes

1. Murphy, George L. The Cosmos in the Light of the Cross. Harrisburg, PA: Trinity Press, 2003.
2. Murphy, p34
3. “CRUX Sola Est Nostra Theologia,” in D. Martin Luthers Werke, Kritische Gesammtausgabe (Weimar: Hermann Boehlau, 1892), 5:172. The captitalization is in the original. Cited in Murphy, p26.
4. Murphy, p108
5. Murphy, p4
6. Murphy, p43
7. Murphy, p3
8. Some Christians ascribe animal death to some combination of Adam’s fall and Noah’s flood, but this does not resolve the problem that the animals are still suffering and dying through no fault of their own. See Keith Miller’s BioLogos series Death and Pain in the Created Order for the limitations inherent in a fall-based theodicy.
9. Rudwick, Martin. The meaning of fossils: Episodes in the history of paleontology. Chicago, University of Chicago Press, 1985.
10. See Jeff Schloss’ BioLogos essay Evolution, Creation, and the Sting of Death
11. Murphy, p63
12. Murphy, p122
13. Murphy, p27
14. This example is drawn from an evangelical outreach event held by a Christian student group in Innsbruck, Austria. On campus one day, they started conversations with their classmates by asking the question, “Would you wear an electric chair on your neck?”
15. Murphy, George L. The Trademark of God: A Christian Course in Creation, Evolution, and Salvation. Wilton, Conn.: Morehouse-Barlow, 1986.
16. Murphy, Cosmos in the Light of the Cross, p 31-32.
17. Murphy, p35
18. Murphy, p87

Usually, even a non-Christian knows something about the earth, the heavens, and the other elements of this world, about the motion and orbit of the stars and even their size and relative positions, about the predictable eclipses of the sun and moon, the cycles of the years and the seasons, about the kinds of animals, shrubs, stones, and so forth, and this knowledge he holds to as being certain from reason and experience.

Now, it is a disgraceful and dangerous thing for an infidel to hear a Christian, presumably giving the meaning of Holy Scripture, talking nonsense on these topics; and we should take all means to prevent such an embarrassing situation, in which people show up vast ignorance in a Christian and laugh it to scorn. The shame is not so much that an ignorant individual is derided, but that people outside the household of faith think our sacred writers held such opinions, and, to the great loss of those for whose salvation we toil, the writers of our Scripture are criticized and rejected as unlearned men.

If they find a Christian mistaken in a field which they themselves know well and hear him maintaining his foolish opinions about our books, how are they going to believe those books in matters concerning the resurrection of the dead, the hope of eternal life, and the kingdom of heaven, when they think their pages are full of falsehoods and on facts which they themselves have learnt from experience and the light of reason?

Reckless and incompetent expounders of Holy Scripture bring untold trouble and sorrow on their wiser brethren when they are caught in one of their mischievous false opinions and are taken to task by those who are not bound by the authority of our sacred books. For then, to defend their utterly foolish and obviously untrue statements, they will try to call upon Holy Scripture for proof and even recite from memory many passages which they think support their position, although they understand neither what they say nor the things about which they make assertion.¹

– St. Augustine of Hippo (AD 354-430)

For a good portion of my life, I had an extremely difficult time admitting that I was wrong. To do so was an admission of intellectual failure, faulty logic, or simple ignorance—not knowing everything about everything.² Being wrong is a hard pill to swallow sometimes, because in many cases it equates to losing face. As it pertains to the creation-evolution debate, I believe that we evangelical Christians tend to express that fear by “holding the line” against certain areas of scientific study, rather than being willing to admit that we might be wrong. In most cases, we have no problem accepting the authority of the world’s best physicists, chemists, meteorologists, engineers, and physicians. Our problem tends to be with scientific authorities in only certain areas of study, such as biology, anthropology, paleontology, geology, and astronomy. Why? It’s because the Bible is the divinely inspired word of God and these areas conflict with the plain reading of Scripture, right?

When we evangelicals come to the table of scientific discussion, we tend to pick and choose those “foods” which appeal to us, while wrinkling our noses at what our theological tastes find disagreeable. As long as the menu includes a wide assortment of things we already like, and we share the table with people with similar tastes, we can get along just fine with this strategy. But is this wise in, say, a survival situation? Food is food, and if we’re hungry enough and don’t have a life-threatening allergic reaction to something specific, I would venture to guess that we’d dig right in without a second thought. In regard to the creation-evolution debate, I am convinced that the evangelical church will find itself in dire straights if we intentionally starve ourselves intellectually, especially with a healthy banquet in full sight and within reach. I also think having a too-restricted “diet” limits our ability to sit down with those outside the church and can, as Augustine believed, play a role in actually prohibiting the secular world at large from coming to a saving knowledge of Christ, “to the great loss of those for whose salvation we toil.” Several years ago, Bruce Waltke, former Evangelical Theological Society president and former professor of Old Testament at Dallas Theological Seminary, updated Augustine’s caution in a brief video production for BioLogos, suggesting that the church risks losing our ability to really interact with the world if we don’t trust God’s providence in this area. Wheaton College’s Professor of Christian Thought, Mark Noll, as the very first sentence of his book The Scandal of the Evangelical Mind writes, “The scandal of the evangelical mind is that there is not much of an evangelical mind.”³ If not for the fact that I’ve never met Professor Noll, I’d believe he was talking about me a decade ago.

What drives us evangelical Christians to “hold the line” against acknowledging truths in these certain categories of scientific knowledge? After undergoing several theological shifts myself over the last decade, and seeing others do the same, I believe I’ve been able to “reverse engineer” what happened in my own life: It was a subtle slide from a confident faith into a comfortable, unwitting arrogance. When we believe that we are in an intimate spiritual union with the Creator of the universe, it’s quite easy to forget (if we ever understood this in the first place) that God can couch theological truth in a variety of literary genres and, yes, even in the context of ancient, scientifically inaccurate cosmologies.⁴ Caught up in the awesome truth of spiritual union, what makes perfect sense to us at any particular point in our spiritual walk can be easily confused with “the truth.” We also gravitate toward churches that conform to our particular belief systems. We prefer pastors who preach to the choir. We buy books that support our particular theological system. To attend another church, listen to a theologically edgy pastor, or read a book from a completely opposite viewpoint from what we’re accustomed to would be to invite a considerable measure of tension into an otherwise comfortable intellectual and spiritual environment.

How many of us actually have or take the time to study evolutionary biology, theology, the history of biblical interpretation, ANE literature, or modern translations of Babylonian creation myths? I would venture to guess that very few of us have the same opportunities that professional scientists and theologians take for granted in their academic careers. To overcome the fear of losing intellectual face, I recommend exposing oneself to different ways of thinking about these topics, including perspectives that you might deem “outside the box.” Reading multi-view comparisons and critiques, such as those found in Zondervan’s wonderful Counterpoints series, is particularly helpful in this regard. Familiarity with and exposure to these views helps temper that initial fear or shock when we come across those few brothers and sisters in Christ who opt to take another approach to any one topic. (One youth pastor friend of mine, when discovering my views on a particular topic, approached me and excitedly exclaimed that meeting me was like meeting a dragon: “You hear stories about them, but you never see one!”)

A word of warning: Before I adopted evolutionary creationism, my neatly packed theology was virtually stress-free. Ignorance was truly bliss. Then came the paradigm shift, and all sorts of previously suppressed tension, questions, and doubts rose to the surface. Another word of warning: If you’re not confronted with tension, questions, and doubts in your day-to-day spiritual walk, something’s wrong. Wrestling with theological issues is not an activity to be avoided; it is a discipline to be vigorously pursued! If you are comfortable enough in your relationship with the risen Savior, you should not fear admitting your ignorance on various topics and entering into a period of temporary uncertainty. This fear can be remedied by taking advantage of a fully informed palette of theological options provided by genuine Jesus followers, including those that embrace biblical criticism. If one’s faith is truly rooted in the One by, for, and through Whom all things were made, all the theories put forth by the higher biblical critics and esoteric scientists should be no cause for fear—but all should be cause for loving dialogue.

Notes

1. St. Augustine of Hippo, The Literal Meaning of Genesis (De Genesi ad litteram), Trans. J. H. Taylor, in Ancient Christian Writers (Long Prairie, MN: Newman Press, 1982), vol. 41.
2. “Ignorant,” Oxford Dictionaries, accessed October 08, 2012, http://oxforddictionaries.com/definition/english/ignorant.
3. Mark A. Noll, The Scandal of the Evangelical Mind (Grand Rapids: William B. Eerdmans Publishing Company, 1994), 3.
4. See Denis Lamoureux, Evolutionary Creation: A Christian Approach to Evolution (Eugene, OR: Wipf and Stock Publishers, 2008); Brian Godawa, “Mesopotamian Cosmic Geography in the Bible,” accessed October 04, 2012.

Behe and IC

Since we have previously explored Behe’s idea of irreducible complexity in an entire series, we will not revisit it here in great detail. It is important, however, to reemphasize how Behe defines irreducible complexity (IC). As we noted in the first part of that series, Behe frames his ideas on IC as a counter to Darwin’s ideas of gradualism.

For Behe, the argument for IC is a critique of gradual evolutionary processes, of the kind that Darwin saw as necessary for his theory to hold. When Behe introduces and defines IC in his book Darwin’s Black Box, he has a key quote from Darwin on gradualism explicitly in view:

Darwin knew that his theory of gradual evolution by natural selection carried a heavy burden: "If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."

It is safe to say the most of the scientific skepticism about Darwinism in the past century has centered on this requirement… critics of Darwin have suspected that his criterion of failure had been met. But how can we be confident? What type of biological system could not be formed by “numerous, successive, slight modifications”?

Well, for starters, a system that is irreducibly complex. By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning. An irreducibly complex system cannot be produced directly (that is, by continuously improving the initial function, which continues to work by the same mechanism) by slight, successive modifications of a precursor system, because any precursor to an irreducibly complex system that is missing a part is by definition nonfunctional. An irreducibly complex biological system, if there is such a thing, would be a powerful challenge to Darwinian evolution.

(Darwin’s Black Box, p. 39)

The definition of an IC system is thus straightforward: it is a matched group of components, where all the components are necessary for the function of the system. The necessity of each component can be demonstrated by attempting to remove it – if the system no longer works if even one component is removed, it is by definition IC.

Behe and exaptation

The standard response to Behe’s argument from IC is to discuss the evolutionary concept of exaptation: that new systems and functions are cobbled together from components that have functional roles in other systems already present in the cell. Behe discusses, and ultimately dismisses this idea in Darwin’s Black Box as follows:

In Chapter 2 I noted that one couldn’t take specialized parts of other complex systems (such as the spring from a grandfather clock) and use them directly as specialized parts of a second irreducible system (like a mousetrap) unless the parts were first extensively modified. Analogous parts playing roles in other systems cannot relieve the irreducible complexity of a new system; the focus simply shifts from “making” the components to “modifying” them. In either case, there is no new function unless an intelligent agent guides the setup.

So for Behe, two points are clear: parts selected for function in one system cannot be exapted for use in other systems since they would require too many modifications; and the emergence of a new function is the indication that an intelligent agent is guiding the process.

Behe has responded to my previous posts to claim that the tandem duplication event that brought about the Cit+ actualization event should not be considered a gain-of-FCT mutation under his criteria:

The gene duplication which brought an oxygen-tolerant promoter near to the citT gene did not make any new functional element. Rather, it simply duplicated existing features. The two FCTs comprising the oxygen tolerant citrate transporter locus -- the promoter and the gene -- were functional before the duplication and functional after. I had written in my review that one type of mutation that could be categorized as a gain-of-FCT was gene duplication with subsequent sequence modification, to allow the gene to specialize in some task. Venema thinks the mutation observed by Lenski is such an event. He has overlooked the fact that there was no subsequent sequence modification; a segment of DNA simply tandemly duplicated, bringing together two pre-existing FCTs.

As an aside, quibbling over whether this mutation constitutes a “genuine gain-of-FCT” mutation is not my purpose here, since the definition is Behe’s to define, and I am not aware of anyone else in the scientific literature who uses Behe’s definitions. That said, I consider it passing strange to claim that a series of events that produced a gene that has a new sequence and functional properties distinct from either of its component parts does not constitute the production of a new “functional coded element.” If nothing else, it is a functional coded element that has not previously existed, cobbled together from parts of other functional coded elements, displaying new, adaptive properties. If according to Behe’s definition that’s not “new” or a “gain” then I guess it’s not, but that seems to me to torture the words “new” and “gain” beyond recognition. But I digress.

The important point for our purposes, however, lies elsewhere. Note carefully how Behe describes the Cit+ actualization event. By dividing the new aerobic citrate transporter gene into two previously existing FCTs, Behe is describing an exaptation event. The one FCT (the aerobic promoter) starts off as a necessary component of a gene transcribed when oxygen is present. As such it is under selection for that function, which has nothing to do with expressing a citrate transporter. The second FCT (the citrate transporter amino acid coding sequence) is under selection to be a citrate transporter, which has nothing to do with the function of the gene the promoter comes from. The Cit+ actualization event, then, exapts these two FCTs by placing them together to create a new function (which Behe does not mention).

And here’s the kicker: the new system (expression of the citrate transporter when oxygen is present) requires both FCTs in order to work. It has become a system of “well matched, interacting parts that contribute to the basic function” (i.e. transporting citrate in the presence of oxygen) “wherein the removal of any one of the parts causes the system to effectively cease functioning.”

In other words, it is a new IC system – a small and relatively simple system, yes, but nonetheless IC. Now, I’m fairly sure that Behe would not define this system as IC, since the documentation of an IC system evolving would seriously undermine his thesis. I am interested, however, in how he will handle this development, on two fronts. First, he would need to explain specifically why two exapted FCTs that are required together for a basic function does not constitute an IC system (if indeed he wishes to preserve his definition). Secondly, given that he allows for exaptation in this case, he needs to explain how exaptation is not a threat to IC in general. In Darwin’s Black Box he disallows exaptation altogether, but that option is no longer on the table.

In the next post in this series, we’ll continue to explore the evidence for exaptation as a means to build new FCTs, and go on to examine the implications of this evidence for Douglas Axe’s proposed limit to evolutionary mechanisms.

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, Darwin’s Black Box: The Search for the Limits of Darwinism (New York: Free Press, 2006).

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.

My valiant helper, a small-sized tiger
Sleeps sweetly on my desk, by the computer,
Unaware that you insult his tribe.

Cats play with a mouse or
with a half-dead mole.
You are wrong, though: it’s not out of cruelty.
They simply like a thing that moves.

For, after all, we know that only consciousness
Can for a moment move into the Other,
Empathize with the pain and panic of a mouse.

And such as cats are, all of Nature is.
Indifferent, alas, to the good and the evil.
Quite a problem for us, I am afraid.

Natural history has its museums,
But why should our children learn about monsters,
An earth of snakes and reptiles for millions of years?

Nature devouring, nature devoured,
Butchery day and night smoking with blood.

And who created it? Was it the good Lord?

Yes, undoubtedly, they are innocent,
Spiders, mantises, sharks, pythons.

We are the only ones who say: cruelty.

Our consciousness and our conscience
Alone in the pale anthill of galaxies
Put their hope in a humane God.

Who cannot but feel and think,

Who is kindred to us by his warmth and movement,

For we are, as he told us, similar to Him.

Yet if it is so, then He takes pity
On every mauled mouse, every wounded bird.
Then the universe for him is like a Crucifixion.

Such is the outcome of your attack on the cat:
A theological, Augustinian grimace,
Which makes difficult our walking on this earth.

–Czeslaw Milosz,¹
 translated by the author and Robert Hass

The Problem

The poem above communicates in a very poignant and profound way the essence of the theological problem of death, pain, and suffering in the natural world—what has been referred to as “natural evil.” As we will see, it may also point to at least one aspect of a Christian response.

I have become convinced that one of the fundamental issues underlying much of the resistance of many Christians to an ancient, evolving creation is that of the problem of “natural evil.” “Natural evil” is also very often a primary focus of those who reject a personal and compassionate God, as it was for Darwin himself. The issue of theodicy thus seems not only to drive many people of Christian faith away from an acceptance of the conclusions of modern science, but also to drive members of the scientific community away from a serious consideration of the claims of the Christian faith. The topic is important, then not because its solution is central to the validity of the Christian faith, but because it often serves as an unnecessary stumbling block to a productive engagement of both science and faith.

The tension generated by our understanding of God’s character, as revealed in the Bible, and by the reality of the natural world around us has been the focus of much theological and philosophical debate within the Christian church since the first century. This article sets out to examine critically several of the proposed solutions to this problem, viewing them from the perspective of a geologist, paleontologist, and orthodox evangelical Christian.

The theological problem of death and pain emerges from the following propositional statements:

1. Scripture consistently declares the absolute goodness of God and the very goodness of his creation. Furthermore, Scripture declares God’s love and care for creation, and the glory and praise it returns to him.
2. Scripture also confesses a transcendent God who is omnipotent in power, yet immanent in creation as well. God’s creative activity is not described as being confined to some past event at the beginning of time, but as a present and continuing reality. God upholds creation in its being from moment to moment, and is creatively active in its history. This understanding of God’s relationship to creation has been well articulated by Jürgen Moltmann.²
3. In seeming conflict with these confessions of God’s character, we observe death, pain, and suffering as ubiquitous, even integral, aspects of the creation around us.

The apparent conflict between God’s goodness and the presence of pain and suffering is made especially acute when we consider the nonhuman creation.³ How can we accommodate the death and suffering of animals within a theology that declares both God’s omnipotence and goodness? C. S. Lewis forcefully puts the issue before us in his book The Problem of Pain:

The problem of animal suffering is appalling; not because the animals are so numerous ... but because the Christian explanation of human pain cannot be extended to animal pain. So far as we know beasts are incapable either of sin or virtue: therefore they can neither deserve pain nor be improved by it.⁴

Because the issue of animal pain so directly impacts our understanding of the goodness of creation, I will focus particularly on solutions to the problem as posed by Lewis.

How do we then reconcile the goodness of God who is immanent and active in his creation with the death, pain, and suffering we see embedded within it? There seem to be two basic alternative approaches to this dilemma.⁵

1. Natural evil can be attributed to something independent of God and acting against his will. This position threatens to limit God’s power and freedom.
2. Natural evil can be considered a part of God’s good purpose for creation, and either directly willed or permitted by him. Such a view would seem to bring into question God’s goodness and love for his creatures.

The tension between these alternatives—and efforts to avoid their negative theological consequences—surface in many of the proposed solutions to this problem.

In part 2, we start to look at some of the proposed solutions, beginning with the idea that a perfect creation was corrupted by a fall.

Notes

1. This poem was included in a collection of poems that was one of two works by Czeslaw Milosz mentioned in a review article by Michael Ignatieff, “The Art of Witness,” New York Review of Books (March 23, 1995). I thank Carol Regehr for bringing my attention to this work.
2. Moltmann refers to this aspect of God’s creative activity in history as “continuous creation.” Jürgen Moltmann, God in Creation (Minneapolis, MN: Fortress Press, 1993), 206–14.
3. I will not address here arguments concerning the degree to which animals experience pain. This issue is considered by Robert Wennberg in “Animal Suffering and the Problem of Evil,” Christian Scholar’s Review 21 (1991): 120–40. It is obvious to me that, for many animals at least, pain and suffering are a very real conscious experience.
4. C. S. Lewis, The Problem of Pain (New York: Macmillan Publishing, 1962), 129.
5. As stated by John Hick, in Evil and the God of Love, rev. ed. (New York: HarperCollins Publishers, 1977): “For every position that maintains the perfect goodness of God is bound either to let go the absolute divine power and freedom, or else to hold that evil exists ultimately within God’s good purpose” (pp. 149–50).

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.