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Where are you, maybe this: For the past few years, scientists have been tracking what they term a "colony collapse" of honey bees, blaming the death of millions of bees on a range of possible causes, such as pathogens, pesticide use, fungi, stress and even cell phone radiation. Now, a study released Monday in the Proceedings of the National Academy of Sciences finds that four other bee species, including the bumble bee, are also in sharp decline. What is behind the dwindling populations? As with the honey bee decline, pathogens and "reduced genetic diversity" are believed to be to blame.

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