Animals have evolved to sleep in extreme ways — for example, taking micro naps during parenting, sleeping on the wing during ...

WASHINGTON — It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered ...

Penguins were everywhere. Colonies ranged up to 5,000 penguins of the chinstrap varieties. One colony had about 12,500 chinstraps, while the largest colony he saw had 600,000 King Penguins in South ...

Sebastião Salgado is a Brazilian photojournalist whose black-and-white prints capture natural environments and the people who inhabit them. He uses his images as a means of promoting preservation, as ...