Emperor Penguins Huddle to Keep Warm

To keep warm, emperor penguins converge on the same central point and begin to huddle. More

As the only creatures on earth to breed in the Antarctic winter, their survival, as well as those of their chicks, is put in jeopardy when the temperature falls to 40 below. So, instinctively, emperor penguins all converge on the same central point and begin to form a huddle. As those on the outside take the brunt of the cold, those on the inside take tiny steps that move the huddle in waves.

AIR DATE 5/21/14