My two favorite climatologists talk about abrupt climate change. It's a slightly older video, but one well worth the relatively short watch, imo.
Dr. Guy McPherson's site is Nature Bats Last, well worth a serious look for anyone who hasn't already done so. Dr. Beckwith is a remarkable scientist, who brings great t explanations down to earth for the average non-scientist. He discusses many aspects of climate change, the meaning of the loss of ice from the Artic and how it will effect food production at a scale that is necessary for Homo sapiens.
I give accolades to them both for opening the eyes of anyone concerned about the survival of the planet. Paul offers what hope he can, at paulbeckwith.net.
