Observable even during my 10 short years working in the field, the polar bears I see today aren't as big as they used to be. Their unique environment is changing.

The live Polar Bear Cam provides a window onto this world, allowing you to become inspired by the beauty of these majestic animals, to witness the effects of global warming first-hand -- and to become inspired to take action.

There is no contradiction for global warming to cause dramatic sea ice loss in the Arctic and a slight expansion in the Antarctic. There is no doubt in my mind that the implications for polar bears habitat loss are serious and sobering.