‘President Nixon signed the Clean Air Act into law 40 years ago with the goal of making dramatic reductions in emissions of air pollutants from stationary and mobile sources. The act has achieved its goal.’
‘EPA reports on its website that between 1980 and 2008, ‘Total emissions of the six principal air pollutants dropped by 54%.’ EPA also states, ‘Today’s cars emit 75 – 90% less pollution (for each mile driven) than their 1970 counterparts, thanks largely to advancements in vehicle and fuel technology.’
‘Cutting these emissions required redesigning industrial facilities, reformulation gasoline and diesel fuel, and producing new types of vehicle engines. The effort cost billions of dollars.’
‘Then in 2007 the US Supreme Court issued a startling ruling. The high court found carbon dioxide and other greenhouse gases, which had never before been classified as a danger to human health under the Clean Air Act, could be regulated by EPA as air pollutants if the agency determined they endanger public health and welfare.’
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