Controversial geoengineering scheme will dump iron in the sea

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Phytoplankton bloom in the North Atlantic Ocean

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A former UK chief scientific adviser is planning experiments to drop sand naturally containing iron in oceans to tackle climate change and restore marine life, in a major geoengineering project that is likely to prove controversial.

Ships will be sent to three locations across the world’s oceans in the next four years to trial the technique – known as ocean iron fertilisation – David King at the Centre for Climate Repair at Cambridge (CCRC), UK, tells New Scientist.

The plan is to emulate and …

Article amended on
29 June 2021

We clarified the form of the iron involved

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