Telegraph: An ice shelf of 5,000 square miles in western Antarctica has started to collapse, scientists said. The disintegration of the Wilkins ice sheet, the largest on the Antarctic Peninsula to be threatened, is more evidence of rapid climate change on the continent, they claimed. The British Antarctic Survey said the ice shelf was “hanging by a thread”. Satellite images from the US National Snow and Ice Data Centre showed an iceberg measuring 25.5 miles by 1.5 miles – …