Billions of bees nation wide in the US have disappeared, and scientists have not been able to draw any conclusions. When bees are exposed to a smell/chemical agent they change the frequency of the sounds emitted from the hive. Scientists want to know if the bees have been exposed to a toxin or other chemical agent causing them to leave their hives. Putting tiny microphones in the hives will allow scientists to pick up on the frequencies put out by the colony.
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