In “The Evolution of Imperfection,” Laurence D. Hurst, a professor of evolutionary genetics at the University of Bath, does a nearly perfect job of showing how and why, as his subtitle ...

Evolution keeps making crabs. In fact, it's happened so often that there's a scientific term for it: carcinization. If you close your eyes and think of a crab, you might picture a round, flat body.

5 fun facts about evolution The last common ancestor of all life on Earth is estimated to have existed around 4.2 billion years ago. There are three ingredients necessary for natural selection to ...

"Truly dramatic changes require a longer time, of course. We are not going to grow wings or gills in less than millions of years, and 50,000 years ago we were anatomically modern humans." Jason ...

One hundred years ago, the small town of Dayton, Tenn., became the unlikely stage for one of the most sensational trials in American history, over the teaching of Darwin's theory of evolution.