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The potential for various geo-engineering proposals to offset the effects of climate change is often not factored in to near- and long-term climate scenarios. In a study conducted by NOAA, released this week, the authors predicted “irreversible changes,” but noted, “we do not consider geo-engineering measures that might be able to remove gases already in the atmosphere or to introduce active cooling to counteract warming.” Days later, one of the first in-depth analyses of these measures was published, considering both the feasibility and potential payoffs of several geo-engineering schemes.

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