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Are direct water vapor emissions endangering anyone?

Real Climate

EPA in 2007: An air pollutant is defined as any substance, or combination of substances, including physical, chemical, biological, or radioactive matter, that is emitted into or otherwise enters the ambient air and may reasonably be anticipated to cause or contribute to air pollution.

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Operationalizing Climate Science

Real Climate

Where, at the beginning, there was really only one input parameter (the CO 2 concentration) that needed to be coordinated, the inputs have now broadened to include myriad forcings related to other greenhouse gases, air pollution, land surface change, ozone, the sun, volcanoes, irrigation, meltwater etc.

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Six Sleeper Proposals in Project 2025

Legal Planet

They involve reduced protection for endangered species, eliminating energy efficiency rules, blocking new transmission lines, changing electricity regulation to favor fossil fuels, weakening air pollution rules, and encouraging sale of gas guzzlers. #1. Crippling air pollution control. 402-404] #5. Embracing gas guzzlers.

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Zeldin Wants to “Reconsider” the EPA’s GHG Endangerment Finding. He Can’t Bury the Facts on Climate Science.

Union of Concerned Scientists

These findings followed from the landmark 2007 Mass v. EPA Supreme Court ruling which held that greenhouse gas emissions are unambiguously air pollutants covered by the Clean Air Act.

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Dissecting the Attacks on the Endangerment Finding

Legal Planet

Understanding the Endangerment Finding Two requirements must be met before a substance can be regulated under the Clean Air Act. First, it has to qualify as an air pollutant. The Supreme Court rejected that argument in 2007 in a historic case called Massachusetts v.

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Sabin Center Files Amicus Brief in Support of EPA’s 2024 Vehicle Emissions Standards

Law Columbia

The case involves EPAs 2024 Vehicle Standards that set new air pollutant and greenhouse gas (GHG) emissions standards for model year 2027 through 2032 Light- and Medium-Duty Vehicles, which have been challenged by states and industry groups. In 2007, the Supreme Court held in Massachusetts v.

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Good & Bad Environmental News From the U.S. Supreme Court

Legal Planet

EPA, brought by a group of conservative/red states who challenge EPA’s approval of California’s request to adopt air pollution emission limits for motor vehicles more stringent than those issued by EPA. On Monday, the Court denied review in a separate but related case, Ohio v.