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Environment

U.S. biologist creates buzz about bees

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March 19 - Honey-bee populations around the world have been hit hard by a mysterious phenomenon called Colony Collapse Disorder which has seen numbers drop dramatically and raised fears about the impact on agriculture and food prices. But a biologist in the U.S. is also concerned about native bees, so he's creating a photographic inventory of all 4,000 North American species in case they too begin to disappear. Rob Muir reports.

Environment

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