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

Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

Bdelloid rotifers shrug off radiation doses that would obliterate human cells. Here’s how their resilience reveals deep ...

The chain catshark may look like any other shark in daylight, but under blue light, its skin glows neon green. Here’s a breakdown of this remarkable adaptation.

Wild scarlet monkeyflowers in California survived a historic drought by relying on a rapid evolution, marking the first time the process has been observed in the wild.

Researchers uncovered millions of ancient plant DNA switches—some older than flowering plants themselves—revealing a hidden evolutionary blueprint stretching back 400 million years. Most people have ...

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

A recent study published in the American Journal of Human Biology suggests that a genetic preference for immediate rewards is linked to less education and earlier parenthood. This provides evidence ...

Nearly one in three Harvard varsity upperclassmen athletes study Economics — a concentration rate far higher than any other ...

How many kids is too many, or too few, for your health? Science may finally have an answer, and it's not what you'd expect.

For decades, ecologists have known that how a species looks or eats affects its environment. But a new study by researchers at the University of California, Santa Cruz, shows that social behavior ...