NASA Studies Details of a Greening Arctic (VIDEO)

NASA/Goddard Space Flight Center

Caption

NASA scientists used almost 30 years of data from the NASA/US Geological Survey Landsat satellites to track changes in vegetation in Alaska and Canada. Of the more than 4 million square miles, 30 percent had increases in vegetation (greening) while only 3 percent had decreases (browning). This is the first study to produce a continent-scale map while still providing detailed information at the human scale.

Credit

NASA's Goddard Space Flight Center/Matthew Radcliff

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