Antarctica and Greenland are losing ice six times faster than in the 1990s, a pair of studies in the journal Nature show.
According to the international team of climatologists behind the research, the unprecedented rate of melt has already contributed 0.7 inches (1.78 centimeters) to global sea level rise in the last three decades, putting the planet on track for the worst-case climate warming scenario laid out in the Intergovernmental Panel on Climate Change's (IPCC) latest report.
