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  1. Plants

    Tiny pool protects flower buds

    A rare structure on flowers, tiny cups that keep buds underwater until they bloom, can protect the buds from marauding moths.

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  2. 19832

    Doesn’t this article on flywheels leave out a significant aspect: the gyroscope effects of a rotating large mass? Wouldn’t it be a benefit for moving installations (stabilization) and a problem for immobile installations? Lee HukillPalo Alto, Calif. In the article, the flywheels depicted appear to have vertical axles. I presume that this prevents inertial forces […]

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  3. Physics

    Spinning into Control

    High-speed flywheels could replace batteries in hybrid vehicles and help make the electrical grid more reliable.