sea ice
Shrinking sea ice caused by a warming climate is forcing bears to stay inland in search of food, conservationists say.
The animals showed signs of emaciation, which may have been triggered by lack of food due to melting sea ice.
As global warming concerns grow, the U.S. secretary of state points to Arctic sea lanes as "an opportunity."
Scientists say they haven't seen these features before.
WHAT'S HAPPENING
"We are all ice-dependent species."
Pumpkin pie with a side of science.
