Is evolution a fact? How do the claims of creationists stack up against the fossil record and the actual science? Dr. Donald Prothero presents the evidence in a presentation based on his 2007 book (and more recent findings). Prothero is a paleontologist, geologist, author and science educator. He holds a Ph.D in geological sciences from […]
New research suggests life on Earth became more diverse because of a change in biology related to stem cells, not just rising oxygen levels.