A 200 sq km section of the Larsen‐B ice shelf on the Antarctic Peninsula, that extends northward toward South America, has crumbled away, and about two‐thirds of the 12,000 sq km ice sheet is now at risk of breaking off, a researcher who analyzed recent satellite images announced on April 16.“This may be the beginning of the end for the Larsen Ice Shelf,” said Ted Scambos, a research associate at the Cooperative Institute for Research in Environmental Sciences, a joint institute of the University of Colorado at Boulder and the National Oceanic and Atmospheric Administration (NOAA). Scambos worked with satellite images collected by the National Snow and Ice Data Center (NSIDC), based at the university.