Orgasm is one of society's most compelling, shaping forces -- and most of us probably think that we are living in its golden age. But are we? The history of the orgasm is as elusive as orgasm itself can be, for sex rarely makes the historical record. Now acclaimed British journalist Jonathan Margolis delivers the definitive history of the human orgasm, of sex for pleasure as well as conception -- from prehistory to Viagra. Most people manage just...