Twenty years ago, it would have been thought laughable that the theory of evolution might once again come under attack in U.S. society. But Darwin is a hot-button issue in 21st-century America, and the creationists (or whatever they’re calling themselves now) seem to be winning over a large chunk of the country. So it probably shouldn’t be a surprise that New York’s Museum of Natural History thought that now might not be a bad time for a refresher course on the man, the theory, and the difference between research and guessing.