Study suggests some sea ice for polar bears will remain

ANCHORAGE, Alaska — A new study shows there's hope for polar bears in a warming world. The Polar Bears International study suggests that if the world dramatically changes its greenhouse gas emissions, a total loss of the bears’ critical summer sea ice could be averted.

Another research group projects that even if global warming doesn't slow, a thin, icy refuge for the bears would still remain between Greenland and Canada.

Four years ago, researchers reported two-thirds of the world's polar bear habitat could vanish by mid-century. Other experts foresee an irreversible ice-free Arctic in the next few years.