The notion of producing human beings in a laboratory had long been the province of science fiction.

Humans don’t have a defined mating season like deer or wolves. Here’s how evolution rewired our reproduction by blending biology, culture and social life into year-round intimacy. Unlike the rut of ...

Organs don't just grow in early life; they can change in response to physiological or environmental challenges in adulthood.

For decades, birth control has largely been shaped around the female body. Women have had access to pills, implants, ...