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

The kick-off signal for puberty begins in the brain. Specifically, in the hypothalamus, where specific neurons release a ...

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

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.

Men and partners are important contributors to the health of future generations, yet their own preconception health and ...