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    Curvature and Maximum Permissible Speeds
    In this activity students will compute the curvature of a section of commuter rail and use it to determine a safe speed at which a train should can round the corner without tipping or derailing....
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    Forests for the Future: How Can Trees Offset Carbon Emissions?
    This activity explores the chemistry and biology underlying forest carbon sequestration, a process that removes carbon from the atmosphere via photosynthesis and storage in plant tissues and soils....
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