https://www.scientificamerican.com/article/new-satellite-gives-clearest-view-yet-of-polar-ice-melt/

A cutting-edge NASA satellite has provided one of the most detailed looks yet at glaciers in Greenland and Antarctica. The findings are clearer than ever: Both ice sheets are losing billions of tons of mass into the ocean each year, contributing significantly to global sea-level rise.

The results were published yesterday in the journal Science by a team of researchers from around the country, led by Ben Smith of the University of Washington. They’re among the first published findings from the ICESat-2 mission, a NASA satellite that can measure changes in the height of the Earth’s ice sheets and the thickness of polar sea ice.