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In this Sunday, December 22, 2019 file photo, clouds float over the Baltic Sea before sunrise in Scharbeutz, northern Germany. A joint European-U.S. satellite mission to improve measurements of sea level rise is being launched from Vandenberg Air Force Base in California on Saturday Nov. 22, 2020. The Sentinel-6 Michael Freilich satellite, named after the late director of NASA's Earth Science Division, is seen as a crucial tool for monitoring the impact of global warming on coastlines, where billions of people face the risk of encroaching oceans in the coming decades. (Photo by Michael Probst/AP Photo)
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