In this National Geographic documentary, scientists get a bird's-eye view of what it's like to live in the Antarctic by strapping "crittercams" to the backs of emperor penguins and following them below the ice. As sections of the Antarctic grow warmer, expanses of ice break up into floating bergs, which makes being a penguin all the more difficult. How will climate change and a shrinking habitat affect the birds' odds for long-term survival?