it redeposits some of that metal along sandbars and beaches. “The rivers are reburying a considerable amount of the mercury,” ...

the precious metal is just as sought after, but the remaining tiny gold particles are much harder to find. Mining often happens in artisanal and small-scale mining operations that release mercury ...

Much of the fish you eat is contaminated with mercury, a toxic element that finds its way from factories and power plants into rivers, lakes, and oceans. This has become a major public health ...