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The Memory of Darkness, Light, and IceYouTube Movies & TV
A long-lost sediment core unveils an ancient time when Greenland was greener -- giving vital clues to our future.
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Pluto: The Dwarf PlanetYouTube Movies & TV
Pluto is called a dwarf planet because it is much smaller than the other planets. There is no known life currently on Pluto, but we ...
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