What begins with X? There are xenoliths, the xylem in xeric woodlands, and the cities of Xian and Xalapa. Not much else begins with X, so relaX and enjoy this eXcellent icy X!
On August 7, 2012, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image of the northwest corner of Leidy Glacier in Greenland.
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