The “marine cloud brightening” is being seriously considered as a way to shield parts of the ocean from extreme heat.
Water cannons are used to spray seawater into the sky.
This causes brighter, whiter clouds to form.
These low marine clouds reflect sunlight away from the ocean’s surface, protecting the marine life below from the worst of climate change.
Modelling studies are encouraging and suggest it could delay the expected decline in coral cover.
British cloud physicist John Latham originally proposed cloud brightening in 1990 as a way to control global warming by altering Earth’s energy balance.