Antarctic glacier has passed its tipping point

The game changer that many feared is now unfolding in Antarctica. The Pine Island Glacier (PIG) is poised to suffer catastrophic collapse according to a new study by Richard Katz of the University of Oxford. The largest of the Western Antarctic Ice Sheet (WAIS), PIG has long been the focus of worried scientific attention....

But now with this study, it seems Mr. Katz has identified PIG's tipping point, and unfortunately, it seems, we've past it. DailyKos