What if we save the earth's climate without the pain of reducing CO2 in the air? Who would support action? I worry that the idea would become a political football, sort of like health care in the US.
Climate engineering is close to reality, probably a lot closer than global reductions in CO2 production. Aerosol particles are being considered to shade the earth, and seawater mists might work to make clouds reflect more sunlight. Both ideas could be tested fairly soon at a reasonable cost.
Critics correctly point out that climate engineering is risky, but so what's safe about our current CO2 orgy? We're pumping up our atmosphere with CO2 in a massive and risky experiment already. It's time to be brave, smart, and active, and that means we should consider designed climate engineering instead of our current accidental climate engineering mess caused by our love of combustion.