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

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

The kick off signal for puberty begins in the brain. Specifically, in the hypothalamus, where specific neurons release a hormone that activates the hypophysis, at the base of the skull, which then ...

The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.

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

When closely related species mate, their offspring sometimes survive but cannot reproduce. This pattern often affects males ...

The appendix has independently evolved at least 32 times across 361 mammalian species. What makes it an evolutionary darling ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Humans don’t have a defined mating season like deer or wolves. Here’s how evolution rewired ...

Last Friday, onstage at a major AI summit in India, Sam Altman wanted to address what he called an “unfair” criticism. The OpenAI CEO was asked by a reporter from The Indian Express about the natural ...