Spraying aerosols and sucking carbon out of the air would bring down temperatures, yes. But the unintended consequences of geoengineering could be enormous.
The “urban heat island effect” creates extra-hot temperatures that kill. But cities can prescribe powerful treatments, like green spaces and reflective roofs.
Soaring temperatures are rapidly thawing permafrost, leading to huge carbon-spewing holes called thermokarst. Northern fires are making the situation even worse.
