Some say the record loss of sea ice in summer 2012 was a one - off, others that it was the start of a runaway collapse. (newscientist.com)
Indeed, the lowest amount of sea ice volume, or minimum, was reached a few weeks ago. (neven1.typepad.com)
Even with the increasing summer retreats of sea ice, which climate scientists say are being driven in large part by global warming caused by humans.... (dotearth.blogs.nytimes.com)