Or
Enter your email address and we'll send you a link to reset your password.
To view this video please enable JavaScript, and consider upgrading to the latest web browser
What do dinosaurs, a panda's thumb and a peacock's tail have in common? Dr. Stephen Jay Gould, the internationally renowned paleontologist and Evolutionary theorist, provides some surprising answers in this NOVA profile.
Our movie and video library can only be streamed or downloaded by members only