COULD MARINE CLOUD BRIGHTENING HELP US FIGHT CLIMATE CHANGE?

The theory behind marine cloud brightening is that brighter or whiter clouds reflect more sunlight back into space.

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This reduces the heat absorbed by Earth's atmosphere and provides respite from the effects of increased carbon emissions while we work on lowering them. It's thought that clouds over the marine environment have the most to gain from such brightening efforts. But how do you brighten a cloud, and does it work as well in practice as the theory suggests? The main way that scientists are proposing to brighten clouds is by spraying them with aerosols containing fine particles of sea salt.