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Earth’s deepest ‘blue hole’ holds a cache of ancient carbon

Aerial photo of the Yongle Blue Hole (YBH) in the South China Sea.

A research platform floats above the Yongle blue hole, whose 130-metre-wide mouth is surrounded by coral reefs. Credit: P. Yao et al./JGR Biogeosciences

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Nature 578, 492 (2020)




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