Whale ancestors were terrestrial mammals that walked on four legs. This bone structure that helped them walk eventually ...

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 ...

Nature's wonders often defy human logic. Animals possess astonishing abilities honed by evolution for survival. Octopuses ...

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

Animals that navigate extreme conditions and environments have evolved to sleep in extreme ways Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds ...