Where do polar bears live ... We're here to answer your everyday questions. Penguins mostly eat fish, squid, crab and krill.

Dr Tom Hart explains how penguin feathers have evolved to allow penguins to survive in a cold environment. One of the ways penguins keep warm is by having a very waterproof outer feather and a dry ...

Successful breeding was strongly related to the amount of krill in the diet, with few chicks fledging in years where krill was particularly scarce. The longest and most comprehensive study to date ...