Ice Watch: Satellites Reveal How Glaciers Creep and Crawl

With imagery and data from Landsat 8, an Earth-monitoring satellite, scientists at NASA and the U.S. Geological Survey (USGS) are tracking the speed of glaciers' movement and melt. The so-called Global Land Ice Velocity Extraction (GoLIVE) project uses observations from Landsat 8, as well as historical data from older Landsat satellites. "Not only are we able to map the glacier chunks where there are large crevices and high-contrast features, but [we can] also [map] the surface of the ice sheet