Arctic Ice Cap Shrinks to Record Low Level

Aired: 9/20/2012 | 0:05:46 | Clip
This September, the arctic ice cap melted the most ever recorded, with only 24 percent of the Arctic Ocean covered by ice. Ray Suarez talks to Walt Meier, a scientist at the U.S. National Ice and Snow Data Center about the new evidence and how a lack of arctic sea ice affects ocean currents and changes weather patterns.