Emperor penguins are the tallest and heaviest penguin species in the world and can be found swimming, playing, and raising ...

The world’s rarest penguins don’t fear the heat. Here's how they learned to embrace it. These birds have evolved to withstand the equatorial sun and shelter in volcanic rocks along a ...

Black bears shelter in caves. And emperor penguins, ... Penguins in the huddle’s center, where temperatures can reach a sweltering 100 degrees Fahrenheit, mostly stand still.

For "Earth Day", the National Geographic documentary series "The Secret World of Penguins", produced by Oscar winner James Cameron, premieres with footage never seen before. The birds can be seen ...

This penguin swam 2,000 miles to Australia—and we don't know why. As climate change bears down on Antarctica, understanding why some penguins end up meandering so far from their natural habitats ...