Larsen B Ice Shelf Breakup
Photograph courtesy NASA
Over a 35-day period in early 2002, Antarctica's Larsen B ice shelf lost a total of about 1,255 square miles, one of the largest shelf retreats ever recorded. This image, captured by NASA's MODIS satellite sensor on February 23, shows the shelf mid-disintegration, spewing a cloud of icebergs adrift in the Weddell Sea. In December 2007, a team of National Geographic explorers will begin a five-week expedition across the continent's Larsen ice shelf to study how global warming is changing the topography of Antarctica.
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