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15 Dec 2015: China Anti-Pollution Efforts
Lead to Steep Drop in Sulfur Dioxide Levels

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NASA Earth Observatory
China's sulfur pollution has decreased in recent years.
Emissions of sulfur dioxide, a toxic gas that threatens human health and causes acid rain, have dropped sharply in the last decade in China, thanks to aggressive air pollution control initiatives by the Chinese government. As these NASA images show, levels of sulfur dioxide in China fell significantly from 2005 to 2014, while emissions of the gas increased in India during the same period. From 2012 to 2014, Chinese SO2 emissions fell especially sharply, by 50 percent. The steady drop in emissions of the noxious gas, released during the burning of coal and other fossil fuels, can be attributed to pollution control measures enacted before the 2008 Beijing Olympics, the widespread installation of flue gas desulfurication devices on power plants, the switch to coal with a lower sulfur content, and the closing of coal-fired power plants in favor of less-polluting energy sources such as natural gas, wind, and solar power. India’s sulfur dioxide emissions have risen because of the rapid expansion of coal-fired power plants.


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