Sexuality and gender are often at the forefront of cultural and political debate today. In his new book, The Sexual Evolution: How 500 Million Years of Sex, Gender, and Mating Shape Modern ...

Learn more about mammal monogamy rates, which support the theory that the primary mating pattern in Homo sapiens is monogamy.

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Nottingham Trent University provides funding as a member of The Conversation UK. Frustrated with which dating app to use? Unable to find “the one”? Spare a thought for some of the animal kingdom, ...

In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures in biology. The human penis is so uniform, it's an anatomical outlier.