Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

Many people today simply assume that our evolution has quietly ended with the development of the modern human. It's easy to think that medicine, science, and modern living have made us "perfect" or ...

As private companies race to build orbital habitats and government agencies sketch out Mars timelines, a fundamental biological question remains largely unanswered: can humans safely reproduce in ...

Researchers should urgently think about how humans can reproduce in space, experts have said. As humanity looks towards living beyond Earth, we need to understand how human reproduction will actually ...

Off a quiet hallway on the top floor of a building at the University of Osaka in Japan, Katsuhiko Hayashi is hatching a revolution. Human embryo science: can the world’s regulators keep pace? He is on ...

Biological sex is all over the news lately. Between the presidential executive order affecting passport policy, moving transgender inmates between prisons and regulating women's sports, appeals to ...