Keep in mind that what's being done here is research, not a US-only geoengineering campaign starting tomorrow. The interventions themselves wouldn't happen with

Keep in mind that what's being done here is research, not a US-only geoengineering campaign starting tomorrow. The interventions themselves wouldn't happen without some pretty serious diplomacy first. And of course we're already playing with the climate, with disastrous unintended consequences. Leaving the climate alone is no longer one of the options.