The Great Mysteries of Sex with Mary Roach

Today, best-selling author and nerd Mary Roach joins us to talk all about sex. We’ll uncover the secrets of the female orgasm (does “upsuck” exist?), detail the bizarre methods of pioneering sex researchers like Masters and Johnson (including a famous penis camera), and get into the nitty-gritty of how to sexually stimulate a pig in Denmark. Plus, Mary tells us what it's like to have sex while getting an ultrasound — all in the name of science. Mary’s new book, …