Enlarge / Map of Antarctica today showing rates of retreat (2010-2016) of the “grounding line” where glaciers lose contact with bedrock underwater, along with ocean temperatures. The lone red arrow in East Antarctica is the Totten Glacier, which alone holds ice equivalent to ~3m (10ft) of sea level rise. (credit: Hannes Konrad et al, University of Leeds UK.) "What's past is prologue"- Shakespeare’s The Tempest. The year 2100 stands like a line of checkered flags at the climate change finish line, as if all our goals expire then.