We know, however, that rapid warming of the planet increases the risk of crossing climatic points of no return, possibly setting in motion large - scale ocean circulation changes, the loss of major ice sheets, and species extinctions. (responsiblescientists.org)
The world's two major ice sheets on Greenland and Antarctica are now losing mass. (climatecommunication.org)
If ice sheet disintegration reaches a point such that the dynamics and momentum of the process take over, at that point reducing greenhouse gases may be unable to prevent major ice sheet mass loss, sea level rise of many meters, and worldwide loss of coastal cities — a consequence that is irreversible for practical purposes. (journals.plos.org)