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Ammar152005

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    NASA | Arctic Sea Ice Sets New Record Winter Low
    0:52

    NASA | Arctic Sea Ice Sets New Record Winter Low

     3  views
    ScienceCasts: Total Eclipse of the Moon
    2:30

    ScienceCasts: Total Eclipse of the Moon

     2  views
    Meet a Game Changer: Roger Rovekamp
    2:28

    Meet a Game Changer: Roger Rovekamp

     3  views