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Some once-common insecticides linked to harmful human health impacts are disappearing from the air in the Great Lakes region, though others still persist, according to new research.
Some widely used insecticides are persistent in the environment, meaning they don’t break down quickly and can build up, causing problems for human and environmental health. Many insecticides used in agriculture or pest control in buildings are considered persistent and remain in the atmosphere, water and soil for years or even decades. But new research shows that in the Great Lakes region, at least three persistent insecticides are nearly eliminated, mostly as a result of regulatory action taken decades ago. Scientists say the results show the importance of swift action to ban the use of new persistent chemicals.
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