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Scientists are taking the once-radical concept of dimming the sun through stratospheric aerosol injection (SAI) seriously, but a Columbia University team warns that reality is far messier than models suggest. Their study reveals how physical, geopolitical, and economic constraints could derail even the best-intentioned attempts to cool the planet. From unpredictable monsoon disruptions to material shortages and optical inefficiencies, every step introduces new risks.

Source: https://www.sciencedaily.com/releases/2 ... 083631.htm