Manmade Antarctic snowstorm 'could save coastal cities from rising seas'

Blowing trillions of tonnes of snow on to ice sheet could halt its collapse, researchers say

Spraying trillions of tons of snow over west Antarctica could halt the ice sheet's collapse and save coastal cities across the world from sea level rise, according to a new study.

The colossal geoengineering project would need energy from at least 12,000 wind turbines to power giant seawater pumps and snow cannons, and would destroy a unique natural reserve. The scientists are not advocating for such a project, but said its apparent "absurdity" reflects the extraordinary scale of threat from rising sea level.