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  1. Humans

    From the March 19, 1938, issue

    A unique, parabolic motion picture, an aircraft pioneer contemplates the future of flight, and a formula to link large and small.

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  2. Earth

    Floral Cues to Climate Change

    Phenology may not be a word that trips off your tongue, but it may be one you want to consider adding to your vocabulary. It has the same root as phenomena, and in fact deals with biological events linked to climate—such as bird migrations and plant germination. The University Corporation for Atmospheric Research has set […]

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  3. Plants

    Floral Shocker: Blooms shake roots of flowering-plant family

    A tiny aquatic plant, once thought to be related to grasses, raises new questions about the evolution of the earliest flowering plants.