On September 15, 2011, Arctic sea ice shrank to its second-smallest extent in decades of monitoring, second only to the record-setting melt that alarmed scientists around the world in 2007.
The melting of Arctic sea ice is a powerful indicator of the rapid warming occurring throughout the Arctic. This warming has also increased melting of continental glaciers and the Greenland Ice Sheet, which led scientists earlier this year to project a sea level rise of 0.9 to 1.6 meters (or as much as 5 feet) by the end of this century.
Warming in the Arctic also affects weather in the United States and other countries at mid-latitudes and is thought to be responsible for more severe storms.
This recording presents three leading scientists, introduced by NGO [non-governmental organization] policy experts.