As an anthropologist on the frontier of seeing inside our brains, Helen Fisher explores the thrilling and sometimes treacherous realms of love and sex. In the research she does for Match.com and her TED talks that have been viewed by millions of people, she wields science as an entertaining, if sobering, lens on what feel like the most meaningful encounters of our lives. And in this deeply personal conversation, she shows how it is possible to take on this knowledge as a form of wisdom and power.