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.

Men have nipples, mammary glands and the hormones required, but the ability for male lactation rarely turns on. Here’s why ...

For sexual reproduction to yield healthy offspring, newly generated oocytes—immature egg cells—must receive the correct amount of DNA after cell division. This process of segregating chromosomes ...

Amazon mollies don't need a man, and never will. A new study finds they can purge and repair genetic mutations that would ...

Microglia (immune cells) and the RANK protein are essential for triggering puberty and maintaining fertility in the brain.

Project Hail Mary by Andy Weir is one of today's best science fiction books. While much of the science and math is great, it falls a bit when it comes to evolution.

Sexual education is a vital component of holistic education, contributing to physical health, emotional well-being, gender equality, and social responsibility. Despite its importance, sexual education ...

Before Disney softened them for the screen, fairy tales were strange, unsettling stories about monsters, danger and survival.

While Thiel has said he met Epstein a “few times,” the correspondence reveals the depth and duration of a relationship that, ...

A recent paper in the Archives of Sexual Behavior suggests asexual women tend to prioritize emotional closeness over sexual ...

Females carry two X chromosomes, and males carry one. Therefore, if Neanderthal males and modern human females were mating ...

Citizens endorse sex education in schools but want restrictions on access to contraceptives.Key findings Large majorities of Zambians say girls and women should be able to decide for themselves ...