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  1. Plants

    Crop genes diffuse in seedy ways

    A study of sugar beets in France suggests that genes may escape to wild relatives through seeds accidentally transported by humans rather than through drifting pollen.

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  2. Let there be light

    Ultraviolet light may have favored, not hindered, the creation of RNA on early Earth.

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  3. U.S. survey probes depression care

    More than half of all people with major depression now seek treatment for the disorder, but only 1 in 5 depressed people receives what psychiatrists consider to be adequate medication and psychotherapy.

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  4. 19330

    With the facts as given in this article, the birds spent about 7 percent of their time flying and 93 percent not flying.