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Sun-dimming aerosols could curb global warming - CNN

"Stratospheric aerosol injection would involve spraying sulfate particles into the Earth's stratosphere at altitudes as high as 12 miles.", "Scientists are proposing an ingenious but as-yet-unproven way to tackle climate change: spraying sun-dimming chemicals into the Earth's atmosphere."

'The researchers also acknowledge potential risks: coordination between multiple countries in both hemispheres would be required, and stratospheric aerosol injection techniques could jeopardize crop yields, lead to droughts or cause extreme weather. ', "The proposals also don't address the issue of rising greenhouse gas emissions, which are a leading cause of global warming."

'The research by scientists at Harvard and Yale universities, published in the journal Environmental Research Letters, proposes using a technique known as stratospheric aerosol injection, which they say could cut the rate of global warming in half. '

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