Arctic Summer Could Be Ice-Free By 2040

If you're looking to photograph a polar bear hopping sea ice floes on your next summer cruise, you better hurry because in 30 years, the Arctic Sea could be free of ice. Simulating the climate with computer models, researchers analyzed how global warming could affect sea-ice in the future. The results, published in the Dec. 12 issue of Geophysical Research Letters, indicate that if greenhouse gases continue being released at their current rate, most of the Arctic basin will be ice free in September by 2040...