The collapse of millions of beehives in North America has been linked to an intricate web of chemicals found in pollen sprayed with pesticide, according to a study. Researchers from the University of Maryland and the Department of Agriculture collected pollen from seven kinds of crops along the East Coast where Colony Collapse Disorder has been particularly prevalent and fed them to healthy bees, which were then more likely to become infected with a parasite known to cause CCD. Pollen samples contained an average of nine types of pesticides, the scientists found.

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