sciencehabit writes "China and India are some of the world's top polluters, with countless cars, factories, and households belching more than 2 million metric tons of carbon soot and other dark pollutants into the air every year. The pall hanging over the region has come to be known as 'the Asian brown cloud.' These pollutants aren't just bad news for the countries themselves. A new study reveals that they can affect climate thousands of kilometers away, warming the United States by up to 0.4C by 2024, while cooling other regions (abstract)."
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