Science Friday: Greenland's Fast Moving Glacier Speeds Up

An interview with glaciologist Ian Joughin about the Jakobshavn glacier in Greenland, the fastest moving glacier in the world. In 2012, researchers observed that this glacier was speeding up even more, and was traveling at a rate of 150 feet per day. This has serious implications for sea levels. Aired Feb. 7, 2012 [11:36 min]