evidence: Scientists at the University of Reading found that a third of ice sheets around the Antarctic could melt if temperatures increase. [...] Research from the University of Reading found that more than a third of the Antarctic ice shelf area could collapse and release "unimaginable amounts" of water into the sea. [...] The findings suggest that 4C warming could leave 34% of the area of all Antarctic ice shelves - around half a million square kilometres - at risk of collapse.