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Our most widely used insecticide makes bees lazy and causes die-offs

In recent years, environmental groups proposed banning neonicotinoids — an insecticide sprayed on almost all of the U.S.'s corn and cotton — because they can kill off bee populations. Now, we're getting a better understanding of why these chemicals are so dangerous. New research shows how they hurt individual pollinators and, in turn, whole colonies. Researchers took multiple colonies of bees and exposed some to a common type of neonicotinoid....
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