If temperatures are getting hotter, and more people start using air conditioners more, which continue to make their external environmental temperatures hotter, is their any realistic hope of the overall temperatures coming back down?
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Broadly speaking, yes. By switching from fossil fuel power to zero carbon sources like nuclear, solar and wind and simple things like changing cattle feed the emission of greenhouse gasses by humans can be massively reduced.
After that atmospheric greenhouse gas levels will naturally decrease over time, returning to the historic average over the course of a few centuries. Aggressive carbon capture schemes and geo engineering could do this much faster, but run the risk of dangerous unintended consequences. (Let’s save iron seeding the oceans for if we really need to).
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