Then, that pixel measurement can be converted into a real-world measurement in millimeters. This allows scientists to estimate just how much energy the penguin is getting from each foraging trip.

When the character first appeared in "Detective Comics" #58 back in December of 1941, he was known only as The Penguin. But a 1946 Sunday newspaper strip revealed his real name, by which he's been ...

"I had already found out what wind chill really means." The temptation to p... p... pick up a penguin is all too much for Hazel. "I had my first real penguin ...

This story appears in the September 2009 issue of National Geographic magazine. First comes the Noise, the turbulent din of king penguins calling, fighting, courting, like the ultimate schoolyard ...