Could a £400bn plan to refreeze the Arctic before the ice melts really work?

Temperatures are now so high at the north pole that scientists are contemplating radical schemes to avoid catastrophePhysicist Steven Desch has come up with a novel solution to the problems that now beset the Arctic. He and a team of colleagues from Arizona State University want to replenish the region’s shrinking sea ice – by building 10 million wind-powered pumps over the Arctic ice cap. In winter, these would be used to pump water to the surface of the ice where it would freeze, t