Humans are the only primates that run nearly naked under the sun. Here’s how this biological tradeoff reshaped how our ...

A reduced genome in an island species raises evolutionary questions.

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

For more than a century, biologists assumed that the bony plates embedded in the skin of lizards – like natural chain mail – ...

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in ...

A long-disputed rule in biology says bigger is better, but a new computer model illuminates why that’s not necessarily true. By Lauren Leffer Published Jan 18, 2024 11:45 AM EST Get the Popular ...

Learn how jellyfish and sea anemones are changing what we know about the evolutionary purpose of sleep.