Earth from Space: Larsen-B Ice Shelf on thin ice   The changing Larsen-B Ice Shelf captured by Envisat on 22 February 2007 with its Advanced Synthetic Aperture Radar (ASAR). The Larsen Ice Shelf is a series of three shelves – A (the smallest), B and C (the largest) – that extend from north to south along the eastern side of the Antarctic Peninsula. Changes in ice shelves are believed to be indicators of climate change, as evidence suggests high latitudes experience the greatest atmospheric warming.   Envisat's Advanced Synthetic Aperture Radar (ASAR) image acquired over the Larsen-B Ice Shelf on 18 March 2002. Just days after its launch on 28 February 2002, Envisat captured its first image showing how the 3250-square-kilometre chunk of ice fractured into thousands of small icebergs and began drifting eastwards into the Weddell Sea. Release date: 2 March 2007