Australian News: Evidence of the break-up of the Arctic ice-cap has shocked research scientists on a Canadian military expedition. Scientists, in the group with expedition forces, have discovered major new fractures on the giant ice shelves in Canada’s far north. As an indicator of serious climate change, a network of cracks stretches for more than 16 kilometres on Ward Hunt, the area’s largest shelf. Scientists say they were astonished to see the cracks which are only just holding …