Scientists invented a way to wash heavy metals from contaminated soils using a chemical process that’s a bit like brewing coffee. Poisonous heavy metals from factories/mines contaminate thousands of sites nationwide, threatening to enter the food chain, and there’s been no easy way to remove them.

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Scientists invented a way to wash heavy metals from contaminated soils using a chemical process that’s a bit like brewing coffee. Poisonous heavy metals from factories/mines contaminate thousands of sites nationwide, threatening to enter the food chain, and there’s been no easy way to remove them.