Pine Island Glacier’s Ice Shelf Is Ripping Apart, Speeding Up Key Antarctic Glacier

For decades, the ice shelf helping to hold back one of the fastest-moving glaciers in Antarctica has gradually thinned. Analysis of satellite images reveals a more dramatic process in recent years: From 2017 to 2020, large icebergs at the ice shelf's edge broke off, and the glacier sped up.

Since floating ice shelves help to...