It's not easy to look at a sea spider and see an animal so representative of its kind that it may help scientists sort out ...

Animals, from worms and sponges to jellyfish and whales, contain anywhere from a few thousand to tens of trillions of nearly ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.

Fossils offer a glimpse into Earth's ancient life, revealing the origins and evolution of complex organisms. Discoveries like ...

Some animals seem to appreciate music. What does that mean for human evolution? The ability to keep a beat was once thought to be uniquely human.

“It may be doubted,” Darwin wrote, “if there are any other animals which have played such an important part in the history of the world as these lowly organized creatures.” ...

For decades, scientists have studied animals living in or near the Chernobyl Nuclear Power Plant to see how increased levels of radiation affect their health, growth, and evolution. A study analyzed ...

Hoarding, in the animal kingdom, is a strategy that has been perfected over millions of years. It is not just a survival ...

Water and air pose completely different challenges to animals on a number of levels.

It’s hard not to relate to the little insects that carnivorous plants like the Cape sundew, Venus flytraps and pitcher plants feed upon. What seems to be an inert plant, a part of the ecological ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.