Have you ever wondered why moose in Alaska are larger than their southern relatives? Have you considered why many Arctic mammals appear bulkier than species living closer to the equator? There’s a ...

New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell ...

Scientists discover webbed feet in land animals, challenging common assumptions. This trait, initially for swimming, also ...

From whale songs to lion roars, animals have evolved to stretch their voices across distances so that friends—and sometimes foes—can hear them. Each sound is coded with messages like "Come here!" ...

The next step is to build a sleeker model that’s easier to manipulate, scientist say.

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

Animals are noisy. And their noises can travel a long way. But making sounds can be a double-edged sword: it can help them communicate, sometimes over long distances, but it can also reveal them to ...

Paleobiologist Geerat Vermeij is enthralled with mollusks. Their shells line the surfaces and fill the cabinets and drawers in his office on the second floor of the Earth and Planetary Sciences ...

Humans aren’t the only animals that use rituals to connect and bond. Elephant researcher CAITLIN O’CONNELL has spent 30 years studying wild elephants in Namibia, observing their complex behavior, and ...

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...