"The heating effect of carbon dioxide persists for 10,000 years or more, absent unproven technologies for scrubbing carbon dioxide out of the atmosphere. In contrast, the sun-dimming particles in question drop out in a year or less, meaning that if you come to rely on geoengineering for survival, you need to keep it up essentially forever. Think of it as climate methadone. And if we are ever forced to stop, we are hit with dangerous withdrawal symptoms – a catastrophic “termination shock” wherein a century of pent-up global heating emerges within a decade."

Dismantling capitalism is our only hope, technology won't save us.

https://www.theguardian.com/commentisfree/2021/apr/22/climate-crisis-emergency-earth-day