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

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

In most cases, evolution is a pretty slow process, taking hundreds if not thousands of years—but when humans enter the ...

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

A reduced genome in an island species raises evolutionary questions.

How much does it matter where you are born, or whether you are heavy or light, if you are a house sparrow? Researcher Kenneth ...

Bite force, a measure of the strength of an animal's bite, helps researchers understand a species' role in the ecosystem.

From frogs and sponges to jellyfish and tardigrades, scientists reveal how some animals digest food without defecating, ...

Some animals perform roles so specialized they resemble full-time jobs. This video explores species whose survival depends on ...

To get to the bottom of it, they looked at the fish’s anatomy and physiology and discovered something curious in their gills.

Studying ancient sea creatures’ snoozing habits could shed light on the origins of sleep.

Results show that players’ choices echo predator-prey patterns seen in wildlife, though scientists stress the limits of the ...