The Earth’s glaciers are in rapid retreat.

New results relying on five decades of satellite observations show extensive changes to glaciers at the Earth’s north and south poles, a result of global warming.

Much of the data comes courtesy of the long-running Landsat mission, which is a series of Earth observation satellites managed by NASA and the United States Geological Survey. Having decades of data from a single line of similar satellites makes it much easier to see change over time. But other satellites are spotting changes as well, sometimes on timescales as short as a year or two.

Related: Fastest-Thinning Greenland Glacier Threw NASA Scientists for a Loop. It’s Actually Growing.

Landsat images of glaciers photographed between…