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Between 1990 and 2012, by how much did the sulfur dioxide emissions for a given amount of coal-generated energy decrease?

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From 1990 through 2012, the sulfur dioxide emissions for a given amount of coal-generated energy decreased by 84%. Per the U.S. Department of Energy: "While coal used to be a dirty fuel to burn, technology advances have helped to greatly improve air quality, especially in the last 20 years. … Today, technology can filter out 99 percent of the tiny particles and remove more than 95 percent of the acid rain pollutants in coal, and also help control mercury."

DocumentationEnergy Pollution




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