focused satellites on Greenland to see how the ice there is holding up. Looking at 206 glaciers in images from 1972 to 2018, they found that Greenland shifted from gaining ice, on the order of 47 gigatons per year from 1972 to 1980, to losing ice every decade afterward—51 gigatons in the 1990s, 187 gigatons in the 2000s, and 286 gigatons in the 2010s. All of this water drained off of Greenland, and this has raised global sea levels by half an inch during this time, mostly in the last eight years.
