Global Warming Threatens Penguins

Frosty Chicks
The male Emperor Penguin famously guards the egg on its feet in blizzards and temperatures as low as -49c until it hatches. A 2009 report of the Proceedings of the National Academy of Sciences argues that the early break-up of the winter sea ice that supports the colony may contribute to low breeding success.

• Special Report: Cop15
• The Robo-Penguin