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Series: The Cambrian "Explosion", Transitional Forms, and the Tree of Life (8 entries)

Many evolutionary critics have identified the Cambrian Explosion as a stumbling block to the theory of evolution, arguing that the “expected transitions between major invertebrate phyla are absent, and that the suddenness of their appearance in the fossil record demonstrates that evolutionary explanations are not viable.” Keith Miller argues that the Cambrian Explosion is not so problematic as these opponents claim after all.

 

Beginning with the End in Mind

In today's video, Oxford physicist Ard Louis discusses the famous debate between renowned evolutionary biologists Stephen Jay Gould and Simon Conway Morris over the idea of evolutionary convergence.

 

Series: The Human Fossil Record (20 entries)

In this series, James Kidder provides an intriguing study on transitional fossils and the evolutionary history of modern humans. He begins by discussing the fossil record, explaining how new forms are classified. He then explains the physically distinguishing trait of humankind—bipedalism. From the discovery of Ardipithecus, the earliest known hominin, to the australopithecines, the most prolific hominin, Kidder focuses on the discovery, the anatomy, and the interpretation of these ancestral remains.

 

Series: Reviewing “Darwin’s Doubt” (11 entries)

 

Evolution and Immunity: Same Story?

The evidence suggests that God has chosen to work through a random process, one which involves the routine creation and destruction of millions of cells that never get used. This is the ordinary means by which God maintains our health. The miracles of healing recorded in the Bible are miraculous precisely because they don’t occur by this normal, natural process.

 

Where are the Transitional Fossils?

A common argument leveled against the theory of evolution is that scientists have not been able to produce transitional fossils that show the change of one species into another. In this podcast, we address a common misconception about what transitional fossils actually are.

 

Series: “And God Saw That It Was Good”: Death and Pain in the Created Order (6 entries)

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 debate within the Christian church since the first century. This series examines critically several of the proposed solutions to this problem, viewing them from the perspective of a geologist, paleontologist, and orthodox evangelical Christian.

 

Biblical and Scientific Shortcomings of Flood Geology, Part 3

We find no compelling evidence that the earth’s geological features can be explained by a global Flood. Here we consider three lines of evidence: global salt deposits, the order of deposition of sediment layers in the Grand Canyon, and the sequence of fossils in geological strata.

 

Evolution, Creation, and The Sting of Death: Part 3

It is one thing to say that death is primordial; it is another to view it as the central means of creation. The theological uneasiness about this issue ultimately rests not just on an understanding of God’s creative activity, but also on a particular representation of evolution.

 

Hominids Lived Millions of Years Ago, but How Can We Tell? (Videocast)

This BioLogos videocast addresses the age of recently discovered hominid fossils and how scientists are able to obtain those dates.

 

What is the genetic evidence for human evolution?

In recent decades, scientists have discovered more about the beginnings of humanity. The fossil record shows a gradual transition over 5 million years ago from chimpanzee-size creatures to hominids with larger brains who walked on two legs. Later hominids used fire and stone tools and had brains as large as modern humans. Fossils of homo sapiens in east Africa date back nearly 200,000 years. Humans developed hearths for fire, stone points for spears and arrows, and cave paintings by 30,000 years ago. By 10,000 years ago, humans had spread throughout the globe. Genetic studies support the same picture. Humans share more DNA with chimpanzees than with any other animal, suggesting that humans and chimps share a relatively recent common ancestor. Also, the same defective genes appear in both humans and chimps, at the same locations in the genome—an observation difficult to explain except by common ancestry. Genetics also tells us that the human population today descended from more than two people. Evolution happens not to individuals but to populations, and the amount of genetic diversity in the gene pool today suggests that the human population was never smaller than several thousand individuals. Yet all humans, of all races, are descended from this group. Humanity is one family.

 

Understanding Evolution: Theory, Prediction and Converging Lines of Evidence, Part 1

In science, we don’t really know the true way things actually work. What we have are theories—broad explanatory frameworks supported by experimentation, which we can use to make testable predictions about the natural world.

 

Speciation and Macroevolution

A common challenge to evolutionary theory is that while life does indeed change over time (what is known as microevolution), no one has ever seen one species evolve into another species (macroevolution).

 

Possibilities and Second Chances

In today’s video, Dr. Rick Colling states that evolution is not merely the imposition of death and destruction and survival of the fittest. Rather, it is about second chances.

 

Series: Understanding Evolution: Is There “Junk” in Your Genome? (5 entries)

One of the challenges for discussing evolution within evangelical Christian circles is that there is widespread confusion about how evolution actually works. In this installment on “junk DNA”, we explore how genomics can be employed to test for non-functional sequences by comparing sequences between related organisms.

 

Dead Bones with a Living Message

In this video, Pääbo covers a lot of ground, noting several lines of genetic evidence for the evolution of modern humans from earlier hominids in Africa, as well as for the interbreeding between early humans and Neanderthals.

 

Evidences for Evolution, Part 2b: The Whales’ Tale

If evolution is true, whales are related to the even-toed hoofed mammals, and there should be transitional fossil forms dating from about 45 to 50 million years ago.

 

Evolution: Is God Just Playing Dice?

With his standard panache, the late Harvard paleontologist Stephen J. Gould argued strenuously that evolution had no inherent directionality. We are mere accidents; a "tiny twig on an improbable branch of a contingent limb on a fortunate tree".

 

New Limbs from Old Fins, Part 2: Comparative Anatomy

Critics of evolution sometimes portray the theory as an untestable historical conjecture, depicting it as fundamentally different from experimental science in the lab. But the hunt for the earliest tetrapods was an effort to test a hypothesis that had generated a prediction.

 

Was Humanity Inevitable?

If the tape was rewound and evolution started over from scratch, Conway Morris says, the evolutionary details would be different, but the end result would be similar: a species characterized by intelligence and complex civilization.

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