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Oil Refineries: A Deadly Industry

Union of Concerned Scientists

One good example of the nexus between global warming and local pollution is ground-level ozone. NOx and SOx move to higher levels of the atmosphere and react with oxygen and water vapor to produce acid rain, which harms crops, forests and ecosystems by decreasing growth and damaging foliage. Secondary PM2.5

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Cars, Smog, and EPA

Legal Planet

This is part of an occasional series of posts about the evolution of pollution standards. Today’s subject is pollution control for new vehicles, which have been known to cause smog since the 1960s. The history of these pollution standards is quite distinctive. Congress adjusted the standards twice. gpm NOx standard.