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Brazil's claim for the Rio Grande Rise.

One of the most significant deep-sea mining negotiations is underway at the Commission on the Limits of the Continental Shelf

One of the most significant discussions in deep-sea mining is happening not a the International Seabed Authority, but in the offices of the Commission on the Limits of the Continental Shelf at the United Nations’ headquarters in New York. The CLCS is responsible for assessing outer continental shelf claims, those portions of a nation’s continental […]

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Delegates gather during an informal meeting. Photo courtesy ISA.

The Five Most Talked about Moments from the ISA Council Meeting

It was a cool week in Kingston as representatives from member states, observers, NGOs, and other stakeholders gathered at the International Seabed Authority to continue the quarter-century-long process of guiding mineral extraction in the high seas towards production. Discussions were broad in vision, focused in scope, and soberingly detailed. While everything from the percentage points […]

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Cut rock samples from the Rio Grande Rise show Fe-Mn crusts (black and gray) growing on various types of iron-rich substrate rocks (pale to dark brown). Photo credit: Kira Mizell, USGS.

A lost continent rich in cobalt crusts could create a challenging precedent for mineral extraction in the high seas.

The Rio Grande Rise is an almost completely unstudied, geologically intriguing, ecologically mysterious, potential lost continent in the deep south Atlantic. And it also hosts dense cobalt-rich crusts. The Rio Grande Rise is a region of deep-ocean seamounts roughly the area of Iceland in the southwestern Atlantic. It lies west of the Mid-Atlantic Ridge off […]

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