Antarctica Exposed

As the world's last unexplored wilderness, Antarctica is shrouded in mystery, and as a land of extremes, it's also great at keeping its secrets.

The harsh conditions, freezing temperatures and barren landscapes make Antarctica inhospitable to humans. The frozen continent is about 1.5 times the size of the United States and 99 percent is covered in ice, making up 90 percent of all the ice on Earth.