On this episode of ID the Future, biochemist Michael Behe discusses part 3 of his new book Darwin Devolves: The New Science about DNA That Challenges Evolution. Behe explains new research showing that although evolution really can bring about adaptive changes, it does so only at the nickel-and-dime level of genus and species, and apparently only by breaking or degrading genes. Behe further argues that natural selection, supposed by evolutionists to be the great driver of new developments, actually limits them.