The Terrifying Math of Melting Ice Sheets

Recent studies of the physics of ice sheets suggests that we may be vastly underestimating how fast the West Antarctic ice sheet is melting because of global warming. Penn State Climate Scientist Michael Mann tells host Steve Curwood that combined with the melting from other glaciers around the world, seas could rise over six feet by 2100, putting many coastal cities underwater. (published April 8, 2016)