The changing tides of deep-sea mining

Incalculable riches, delicate ecosystem, and the green energy future.

Deep-sea mining has captured the world's attention as a uniquely promising source of the metals needed for lithium-ion batteries powering the green energy future and a bitterly controversial topic of debate.

Undersea deposits contain quantities of nickel, cobalt, copper, and manganese sufficient to replace every U.S. car on the...