Photo of the Day
Picture of an emperor penguin wearing a camera strapped to its back and leaning over a hole in the ice
Penguin Pictures
Rodney the emperor penguin wears a "Crittercam" on his back in this picture from the August 2007 issue. Crittercam was invented by National Geographic's Greg Marshall to capture audio, video, and environmental data, and has been utilized to study dozens of species around the world.
