Ancient fish-like animals began exploring shallow waters about 400 million years ago. These early tetrapods, with sturdy fins ...

The next time you go wild swimming, whether in a lake, river or sea, you are probably sharing the water with one of your tiniest, yet closest relatives. Subscribe to our newsletter for the latest ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors of the modern sea sponge. The newly identified chemical ...

Add Yahoo as a preferred source to see more of our stories on Google. The answer to this question is heavily debated by scientists. Dozens of different studies using everything from chromosome ...

The 550-million-year-old fossil Tribrachidium heraldicum is one of the most enigmatic critters from the Ediacaran. With its circular, three-lobe form, it doesn't resemble any modern organism. The ...

WASHINGTON (AP) — Many animals can glow in the dark. Fireflies famously blink on summer evenings. But most animals that light up are found in the depths of the ocean. In a new study, scientists report ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Paleontologists have revealed the fossilized remains of a curious ...

The next time you go wild swimming, whether in a lake, river or sea, you are probably sharing the water with one of your tiniest, yet closest relatives. Choanoflagellates, like most single celled ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors of the modern sea sponge. In a study appearing today in ...