Deep-Sea Mining: How to Balance Need for Metals with Ecological Impacts

Slashing humanity’s reliance on fossil fuels will require billions of kilograms of metal: a single wind turbine can contain more than a metric ton of copper, and electric car batteries demand heaps of cobalt, nickel and manganese. Most of these metals now come from terrestrial mines—often at the cost of deforestation, water pollution and human rights abuses. 

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