The age of discovery isn't over yet. A colossal canyon, the longest on Earth, has just been found under Greenland's ice sheet, scientists announced today (Aug. 29) in the journal Science.
via LiveScience.com http://www.livescience.com/39289-greenland-longest-canyon-discovered.html
via LiveScience.com http://www.livescience.com/39289-greenland-longest-canyon-discovered.html
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