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  1. Waste Not: Proteins suggest ways to thwart muscle loss

    Researchers have now revealed details of the biochemical signals that drive muscle atrophy.

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  2. Paleontology

    Ancient Buzzing: German site yields early hummingbird fossils

    Excavations in Germany have yielded the only known fossils of hummingbirds from the Old World and by far the oldest such fossils unearthed anywhere.

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  3. 19416

    The phenomenon described in your article, an animal manufacturing natural poisons using chemical precursors in the environment, has been described before—in a work of science fiction! In Arthur Herzog’s 1974 novel The Swarm, later made into a movie, killer bees learned to metabolize organophosphate insecticides and incorporate those molecules into their venom.