Orcas, or killer whales, are deadly and beautiful apex predators. Hakeem Jeffries says Obamacare subsidy extension 'will pass ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

A dramatic video showing a pod of adult orcas, better known as killer whales, chasing a lone penguin has gone viral on social ...

A viral video shows killer whales hunting a penguin. The orcas patiently pursued the bird until it tired. This footage ...

From napping half their brain while flying to taking four-second naps to survive parenthood, these animals have evolved ...

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.

Every animal with a brain needs sleep -- and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and ...

Discover how penguins, frigatebirds, and seals adapt to sleep in extreme conditions, balancing survival and rest.

Mosasaurs were enormous reptiles best known for ruling ancient oceans more than 66 million years ago, but new evidence suggests some also lived in rivers. Scientists reached this conclusion after ...

During the winter, as the cold nights draw in, many people like to curl up by the fire with a soft blanket and a hot drink to ...

Rounding the point at the bay’s mouth, the full force of the Gulf of Alaska makes itself known – these are serious waters, home to serious creatures, and you’re now in their domain.

The park’s crowning glory is the Harding Icefield, a remnant from the last ice age that blankets over 700 square miles of Alaskan wilderness in a frozen expanse that has to be seen to be believed.