LiveScience: The biggest threat to emperor penguins may not be leopard seals or even killer whales, but a much larger predator: global warming.
Climate change, which is quickly melting the sea ice this species depends on for survival, could cause dramatic drops in the number of emperor penguins across Antarctica by the end of the century, a new study finds. Specifically, more than two-thirds of Antarctica's emperor penguin colonies will decline by more than 50 percent by the end of the century under future...