Here's another uncut interview from "The Genius of Charles Darwin", a three-part documentary series by Richard Dawkins.
This one is with Randolph Nesse, author of "Why We Get Sick: The new science of Darwinian medicine"
Parts 3-5 will be uploaded soon. Check the Richard Dawkins Youtube Channel to find them and a number of other interesting videos.
The mathematics of how sperm swim
40 minutes ago