Honey Bees' Colony Collapse Disorder

SAN FRANCISCO For years the news has been the same: Honey bees are being hammered by some mysterious environmental plague that has a name -- colony collapse disorder - but no established cause. A two-year study now provides evidence indicting one likely group of suspects: pesticides. It found "unprecedented levels" of mite-killing chemicals and crop pesticides in hives across the United States and parts of Canada.

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