In her TED talks that have been viewed by millions of people and the research she does for match.com, Helen Fisher wields science as a sobering, if entertaining, lens on what feels like the most meaningful encounters of our lives. She is a leading anthropologist/explorer on the new frontier of seeing inside our brains when love and sex happen. And she reveals how we can take this knowledge as a form of power — to give conscious new meaning to the thrilling and sometimes treacherous human realms of love, sex, and marriage.