East yorkshire. an iceberg believed to be the size of greater london has broken off from the antarctic�*s brunt ice shelf. the british antarctic survey has released footage of the chasm created by the 600 square mile berg coming adrift. cracks in the ice, which is 500 feet thick, have been developing over several years, and the final break happened on sunday during a spring tide. this calving event, as it's called, is part of the natural behaviour of the brunt ice shelf, according to scientists, and not linked to climate change. those i pictures taken is to look at the weather and darren bet...