"Our results confirm the exposure of bees to neonicotinoids in their food throughout the world," researchers wrote. "The coexistence of neonicotinoids and other pesticides may increase harm to pollinators."Previous studies have found that neonicotinoids, which are a common type of insecticide, can impair the brain function of bees and slow down the growth of their colonies. The recent findings in Science suggest that bees throughout the world are exposed to neonicotinoids at a massive scale. Of the honey sampled, North America had the highest proportion of samples that had neonicotinoids at 86%, followed by Asia at 80% and Europe at 79%.
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