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PBS_ItsOKToBeSmart

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    Why Is The Universe So Empty? (ft. PHD Comics!)
    4:04

    Why Is The Universe So Empty? (ft. PHD Comics!)

     5  views
    Why It Is What Time It Is (The History of Time)
    5:54

    Why It Is What Time It Is (The History of Time)

     6  views
    Do You Really Have Two Brains?
    4:20

    Do You Really Have Two Brains?

     5  views
    Putting Hurricane Harvey In Perspective
    3:58

    Putting Hurricane Harvey In Perspective

     4  views
    The Romantic Lure of Moonlight
    3:46

    The Romantic Lure of Moonlight

     3  views
    Should You Eat Everyday?
    4:38

    Should You Eat Everyday?

     6  views
    Inside an ICE CAVE! - Nature's Most Beautiful Blue
    5:45

    Inside an ICE CAVE! - Nature's Most Beautiful Blue

     3  views
    Asteroid Mining: Our Ticket To Living Off Earth?
    5:17

    Asteroid Mining: Our Ticket To Living Off Earth?

     2.15K  views 1 comment
    20 MILLION Year-Old Spider!! Unweaving Spider Silk 🕷
    7:14

    20 MILLION Year-Old Spider!! Unweaving Spider Silk 🕷

     54  views
    Why Do You Love Your Family?
    6:56

    Why Do You Love Your Family?

     14  views
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