Helen Fisher is a biological anthropologist at Rutgers University. She studies the evolution, brain systems (fMRI) and biological patterns of romantic love, mate choice, marriage, gender differences, personality, and the biology of leadership styles. She has written five internationally best selling books, including Why Him? Why Her?, Why We Love, and Anatomy of Love. She is currently the chief scientific advisor to Match.com and subsidiary, Chemistry.com, where she designed the Chemistry.com questionnaire now taken by 13 million people in 40 countries. She lectures worldwide, including lectures at the World Economic Forum (Davos), 2012 international meeting of the G-20, National Academy of Sciences, The Economist, TED, United Nations, Smithsonian Institution, Salk Institute and Harvard Medical School. She publishes widely in academic journals and appears regularly on TV, radio, and print media.