A sheet of ice, twice the size of Manhattan, broke of from a glacier in Greenland this week.
The new iceberg measures 46 square miles. In 2010, the Petermann Glacier lost chunk of ice measuring 96 square miles. The loss of glacier mass in Greenland, which has seen warming temperatures, has scientists concerned.
- YouTube: 2010 Break From Petermann Glacier
- Andreas Muenchow, professor at the School of Marine Science and Policy at the University of Delaware
This segment aired on July 19, 2012.