Greenland's Sweaty Summer

By Amelia Hennighausen - 2012-08-06T15:47:15Z

Photograph by Jesse Allen and Robert Simmon/NASA Earth Observatory

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Glacial Debris Recolors River

The Watson River flows through Kanger, home of one of Greenland's busiest commercial airports, on July 12. The river's color comes from rock particles ground away by an ice sheet, called "glacial flour." A NASA website about flooding on the Kanger links to a local video showing how high water around a bridge "ate a big loader tractor like candy" and washed it away in its torrent.

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