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  1. Anthropology

    Monkey Business

    They're pugnacious and clever, and they have complex social lives—but do capuchin monkeys actually exhibit cultural behaviors?

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  2. Plants

    A Frond Fared Well: Genes hint that ferns proliferated in shade of flowering plants

    Analyses of genetic material from a multitude of fern species suggest that much of that plant group branched out millions of years after flowering plants first appeared, a notion that contradicts many scientists' views of plant evolution.

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  3. Tech

    Soaring at Hyperspeed: Long-sought technology finally propels a plane

    For the first time, an airplane flew at hypersonic speed under power of a scramjet, an engine that operates at high velocities using oxygen from the atmosphere.