An anonymous reader writes, "Some scientists are suggesting that a short-term solution to global warming could be to inject sulfate-based aerosols into the stratosphere as a 'sunlight-reflecting, cooling foil.' Tom Wigley of the National Center for Atmospheric Research says that adding just 5 million metric tons of sulfur dioxide annually to the stratosphere 'would have a significant influence.'" From the article: "Constant aerosol production also could mean we wouldn't have blue skies anymore, and it could reduce incoming solar radiation enough to hobble such imperatives as replacing fossil fuel with solar energy technologies."
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