A recent study from the Harvard School of Public Health (HSPH) found that two widely used neonicotinoid insecticides appear to significantly harm honeybee colonies over the winter — especially during colder winters.
HSPH says the study replicated a 2012 finding from the same research group that found a link between low doses of imidacloprid, a type of neonicotinoid insecticide, and Colony Collapse Disorder (CDD) — where bees abandon their hives over the winter and eventually die. It also found low doses of the neonicotinoid insecticide clothianidin had the same negative effect.
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