Page last updated at 09:57 GMT, Thursday, 5 March 2009

The tiny mite that is so dangerous to bees

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Bees are dying in huge numbers around the world from a mysterious cause dubbed Colony Collapse.

Scientists think something called the varroa mite is partly responsible for the bee emergency. They suck the blood of infected insects, weakening their immune systems.

Dr Eric Mussen of the University of California puts the varroa mite under the microscope and explains why it is just so dangerous to bees.

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