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Section 202(a)(1) of the Clean Air Act requires the Administrator of the EPA to establish standards "applicable to the emission of any air pollutant from…new motor vehicles or new motor vehicle engines, which in [her] judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare" (emphasis added). [3]
EPA v. Calumet Shreveport Refining, No. 23-1229, 605 U.S. ___ (2025) The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most influential modern environmental laws.
Climate change in Arizona encompasses the effects of climate change, attributed to man-made increases in atmospheric carbon dioxide, in the U.S. state of Arizona. It has been asserted that Arizona "will suffer more than most of U.S." due to climate change. [1] According to the United States Environmental Protection Agency, Arizona "has warmed ...
The climate change policy of the United States has major impacts on global climate change and global climate change mitigation. This is because the United States is the second largest emitter of greenhouse gasses in the world after China, and is among the countries with the highest greenhouse gas emissions per person in the world.
Two sets, or tiers, of emission standards for light-duty vehicles in the United States were defined as a result of the Clean Air Act Amendments of 1990. The Tier I standard was adopted in 1991 and was phased in from 1994 to 1997. Tier II standards were phased in from 2004 to 2009. Within the Tier II ranking, there is a subranking ranging from ...
Emission Standards. The NO x and PM Law introduces emission standards for specified categories of in-use highway vehicles including commercial goods (cargo) vehicles such as trucks and vans, buses, and special purpose motor vehicles, irrespective of the fuel type. The regulation also applies to diesel powered passenger cars (but not to gasoline ...
The Clean Power Plan was an Obama administration policy aimed at combating climate change that was first proposed by the Environmental Protection Agency (EPA) in June 2014. [1] The final version of the plan was unveiled by President Barack Obama on August 3, 2015. [2] Each state was assigned a target for reducing carbon emissions within its ...
Juliana, et al. v. United States of America, et al. was a climate-related lawsuit filed in 2015 and dismissed in 2020. Filed by 21 youth plaintiffs against the United States and several executive branch officials. Filing their case in the United States District Court for the District of Oregon, the plaintiffs, represented by the non-profit ...