Plan to refreeze Arctic sea ice shows promise in first tests

Field trials indicate that pumping seawater onto the snow on top of Arctic sea ice can make the ice thicker, offering a possible way to preserve sea ice throughout the summer

A bold plan to pump seawater over the frozen Arctic Ocean could offer humanity a final chance to save the region’s vanishing sea ice.

Field trials conducted this year in the Canadian Arctic to thicken sea ice using water from the ocean below have proved successful, says UK start-up Real Ice.

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