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Evolutionary biologist Nathan Lents argues that many of our supposedly modern ideas about gender and human sexuality are, in fact, deeply rooted in our animal ancestors. In this Chat, Lents discusses his new book, "The Sexual Evolution: How 500 Million Years of Sex, Gender, and Mating Shape Modern Relationships", a fascinating exploration of sexual behavior throughout the animal kingdom.

Nathan H. Lents is an American scientist, author, and university professor. He has been on the faculty of John Jay College since 2006 and is currently the director of the Cell and Molecular Biology program and the former head of the honors program and the campus Macaulay Honors College program.