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  1. Physics

    New pass at neutrino mass

    The first experiment to create neutrinos in an accelerator and then beam them a long distance has found a long-awaited, new form of evidence that those fundamental particles weigh something.

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  2. Earth

    Cost of protecting the oceans

    Operating an extensive global network of marine parks in which fishing and habitat-stressing activities are restricted would probably be more affordable for governments than continuing to subsidize struggling fisheries at current levels.

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  3. Physics

    Why the thinnest sticky hairs rule

    The foot hairs of geckos and other creatures that can walk on ceilings may be microscopic because only such slender hairs offer optimal adhesion, regardless of shape.