Scientists hope to refreeze the polar ice caps in fight against climate change
Cambridge University is to launch an institute which will investigate refreezing the polar ice caps by spraying seawater into the clouds.
The new Centre for Climate Repair is to research radical measures once thought "beyond the pale" because current efforts to cool the atmosphere are insufficient.
This will include pumping seawater up tall masts on uncrewed ships that will then diffuse into the atmosphere.
It is hoped the tiny particles of water would make clouds above the ice caps more widespread and reflective of the sun, thereby cooling the ice below.
Another approach to be investigated will be so-called ocean greening, the process of dropping iron particles into the sea which then stimulates algal blooms which would absorb CO2 from the air via photosynthesis.
Recycling CO2 emissions by sucking them out of the atmosphere and synthesising them into new fuel will also be investigated.