Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on May 15, 2015
Video footage released by Nasa explains why it believes the Antarctic ice shelf known as Larsen B will completely disintegrate over the next few years. Subscribe to Guardian Science and Tech ► http://bit.ly/substech The shelf has existed for 10,000 years, but began collapsing in 2002. The shelf now consists of about 625 square miles of ice.