A lot of people are also tossing their pet theories into the mix. I ended up being confused, as some sounded plausible but wouldn't hold up under closer scrutiny.
Even the idea of cell phones affecting bees' behavior is questionable when you consider that we have been using radio waves on much larger scale for long time already.
Edit: Chinney seems to be spot on about magnetic fields as well; there's several other species that do use magnetic fields for navigation; we should be seeing pigeons flying into windows if this was a factor.
Either way, I hope someone find the answer soon.
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