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Ask a Scientist: Top Takeaways from the New EPA Carbon Pollution Rules

Union of Concerned Scientists

percent of US electricity and utility-scale solar generated 3.4 In 2012, coal generated 37 percent of US electricity. Coal’s decline and the rapid growth of renewables helped cut the US electricity sector’s carbon emissions by 24 percent over the last decade. Last year, wind generated 10.2 Add hydropower’s contribution of 6.2

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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.