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According to Space.com (This article and its images were originally posted on Space.com December 2, 2018 at 08:01AM.)
Earth keeps getting hotter. Humanity isn’t doing enough to stop it. So, scientists are increasingly musing about conducting dramatic interventions in the atmosphere to cool the planet. And new research suggests that a project of atmospheric cooling would not only be doable, but also cheap enough that a single, determined country could pull it off. That cooling wouldn’t reverse climate change. The greenhouse gases would still be there. The planet would keep warming overall, but that warming would significantly, measurably slow down.
Those are the conclusions of a paper published Nov. 23 in the journal Environmental Research Letters by a pair of researchers from Harvard and Yale universities. It’s the deepest and most current study yet of “stratospheric aerosol injection” (also known as “solar dimming” or “solar engineering”). That’s the spraying of chemicals into the atmosphere to reflect the sun’s heat back into space, mimicking the global cooling effects of large volcanic eruptions.
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