July 26, 2007—Adélie, chinstrap, gentoo, and emperor might sound like characters in a fantasy novel.

But in reality they are penguin species from Antarctica, where life in a winter wonderland is taking a tragic turn.

Recent temperature increases in the icy continent are impacting some penguins' abilities to feed and breed, creating population dips in species that can't handle the heat.

Go into the field with researchers studying Antarctica's wildlife, and find out which of the penguin protagonists are adapting to a warming world—and which are suffering.