Dr. Sean B Carroll is an award-winning scientist, author, and educator. He is currently Professor of Molecular Biology and Genetics and an Investigator with the Howard Hughes Medical Institute at the University of Wisconsin. With Darwin Day coming up, we talk about Charles Darwin. We discuss some of the interesting aspects to the famous naturalist, in particular those that Darwin fans may otherwise not fully appreciate or understand. Sean also talks about an important resource of which educators can get free materials on evolution: Howard Hughes Medical Institute. Visit http://www.hhmi.org/biointeractive/ for more information.