Audubon Society’s Christmas Bird Count starts December 14 and runs through January 5. It’s free and anyone can participate, but you have to sign up in advance. Here's how.
Glacier melt means rats can reach bird nests on South Georgia, an island north of Antarctica and east of the Falklands. What to do? Send in helicopters!
A comprehensive, 21-year analysis reconciling four different techniques. A word about this year's sea ice extent. And why is info about Antarctica so hard to come by?