By Susan Milius
It can be a robot-eat-bee world out there, but bumblebees can learn to outwit electronics that mimic lurking spiders.
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Getting wise to the dangers of camouflaged predators, however, has a cost for the bees, says Lars Chittka of Queen Mary, University of London. Predator-savvy bees get jumpy, slowing down on the nectar-collection job, he and a colleague report in an upcoming Current Biology.