NASA's shows 20 years of changing earth seasons in 5 minutes
This image made from video released by NASA in November 2017 shows a Mollweide projection of the Earth and its biosphere derived from two decades of satellite data starting in September 1997 going through September 2017. By monitoring the color of reflected light via satellite, scientists can determine how successfully plant life is photosynthesizing. (NASA via AP) (Associated Press)
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