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Arctic Sinkholes
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate.
49 - 1Arctic Sinkholes Feb. 02, 2022
49 - 2Secrets in the Scat Feb. 09, 2022
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49 - 7Dinosaur Apocalypse: The Last Day May. 11, 2022
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49 - 9Ice Age Footprints May. 25, 2022
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