Why Is the Penis Shaped Like That?

Why do testicles hang the way they do? Is there an adaptive function to the female orgasm? What does it feel like to want to kill yourself? Does ‘free will’ really exist? And why is the penis shaped like that anyway?

Research psychologist and award-winning columnist Jesse Bering takes readers on a bold and captivating journey through some of the most taboo issues related to evolution and human beha...