Antarctica contains eons of secrets that scientists are just beginning to uncover -- from wildlife to scientific marvels, this continent may hold the key to the future of the planet.

"Over millions of years, organisms in Antarctica--one of the most extreme environments on Earth--have evolved in amazing ways that enable them to thrive on the ice, in the ice, and under the ice. How is climate change affecting the creatures that live in this frozen world? Even in the intensely cold, windy, and dry environment of Antarctica, a wide variety of wildlife--from the massive swarms of krill in the Southern Ocean to the throngs of penguins...