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  • EarthViewer

    EarthViewer

    Click & Learn

    Download the accompanying student worksheet under "Downloads." What did Earth look like 250 million years ago? Or 1 billion years ago? Or 4.5 billion years ago? EarthViewer is an interactive tool that allows you to explore the science of Earth's deep history.

  • Ocean Acidification

    Ocean Acidification

    Activities

    In this hands-on activity, students simulate the effects of decreasing pH caused by rising levels of atmospheric carbon dioxide.

  • Earth Systems Activity

    Earth Systems Activity

    Activities

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