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  • 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.

  • Geological History of Oxygen

    Geological History of Oxygen

    Click & Learn

    Explore the changes in oxygen levels throughout Earth’s history and discover their impact on life.

  • Molecular Structure of Fat

    Molecular Structure of Fat

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    This slide show delves into the various molecular shapes that fat can take.

  • Small-Molecule Diversity

    Small-Molecule Diversity

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    Small molecules are chemicals that can interact with proteins to affect their functions. Learn about the structure and biological functions of various small molecules like sugar and caffeine.

  • Microarray Manufacturing Technology

    Microarray Manufacturing Technology

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    How both gene chips and microarray slides are created.