Radio New Zealand: An ice shelf the size of Hawke’s Bay that is wrenching itself away from Antarctica is a symptom of global warming and will have further environmental consequences, according to a New Zealand scientist. A satellite picture shows that a 40-kilometre-long strip of ice believed to pin the Wilkins Ice Shelf in place has snapped at its narrowest point, off the Antarctic Peninsula. Professor Tim Naish from the Antarctic Research Centre at Victoria University says it is the ice sheets …