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  • Earth Systems Activity

    Earth Systems Activity

    Activities

    This activity guides students through building a conceptual model of how carbon dioxide affects Earth's climate

  • The Day the Mesozoic Died

    The Day the Mesozoic Died

    Short Films

    (33 min 43 sec) The disappearance of the dinosaurs at the end of the Cretaceous period posed one of the greatest, long-standing scientific mysteries. This three-act film tells the story of the extraordinary detective work that solved it. Also available in Spanish.

  • Calculating Iridium Fallout From an Asteroid Impact

    Calculating Iridium Fallout From an Asteroid Impact

    Activities

    A worksheet in which students calculate how much iridium was released, and eventually deposited all over the Earth, by the impact of the asteroid that caused the K-T extinction.