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.

Researchers created artificial kinetochore structures that reduce chromosome separation errors during meiosis in aging egg cells. By lowering microtubule pulling force, the approach helped maintain ...

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, ...

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 ...

Mycologists cultivated fungi they found in post-wildfire landscapes to understand the evolutionary traits behind their ...

Scientists are finally decoding the orgasm face. Explore how human evolution, primate behavior, and mate selection shape our expressions of climax.

Thirty babies in a lifetime might sound unbelievable, but in the animal world, that number can be modest. Reproduction follows a clear biological pattern.