One promising approach is stratospheric aerosol injection—where a precursor of sulfur dioxide would be continuously injected into the stratosphere, forming a thin layer of aerosols to reflect sunlight. The amount of sulfur required to offset global warming is on the order of 2 percent of the sulfur that humans already inject into the atmosphere, largely through burning fossil fuels. Another suggested approach is marine cloud whitening, where seawater would be mixed into the atmosphere at sea to make the clouds slightly whiter and more reflective.
Interesting ways to solve climate change via geo engineering
