Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships

“We are in uncharted territory” when it comes to Tinder et al., says Justin Garcia, a research scientist at Indiana University’s Kinsey Institute for Research in Sex, Gender, and Reproduction. “There have been two major transitions” in heterosexual mating “in the last four million years,” he says. “The first was around 10,000 to 15,000 years ago, i... See more