How Do Arctic Penguins Remain Ice-Free When Diving Into Sub-Zero Waters?

Gentoo penguins, an arctic species distributed around the South Pole, have evolved a special method to remian ice-free, say researchers who are now hoping to adapt their findings to airplane wings which frequently need de-icing. "It's a little ironic that a bird that doesn't fly could one day help airplanes fly more safely," said one researcher.