They're complex, mysterious, and easy to blame for everything from unexplained symptoms to seemingly superhuman abilities. Find out how we discovered hormones, what they do inside of us, and who's really controlling who.
Featuring Randi Hutter Epstein author of "Aroused, the History of Hormones and How They Control Just About Everything."
How does the human penis measure up to the rest of the animal kingdom? What can the shape of the penis tell us about human mating? And what is up […]