Union of Concerned Scientists
MARCH 12, 2024
Thanks largely to the Clean Air Act, new passenger vehicles are 98 to 99 percent cleaner than they were 60 years ago when it comes to most tailpipe pollutants, including hydrocarbons, carbon monoxide, nitrogen oxides, and fine particulate matter. EN: The pandemic slammed public transportation.
Legal Planet
APRIL 3, 2023
Social Cost of Carbon D. EPA regulation of greenhouse gas emissions under the Clean Air Act (CAA) A. Standards for carbon and methane emissions from new sources Permitting requirements for carbon emissions from new stationary sources of major sources of existing pollutants.
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Legal Planet
DECEMBER 9, 2021
The Clean Power Plan was based on section 111(d) of the Clean Air Act. There’s been a lot of discussion among academics and advocates about instead using section 115 of the Clean Air Act as a basis for carbon regulations. EPA might well get substantial reductions in carbon emissions this way.
Union of Concerned Scientists
JUNE 14, 2023
Last month, the Environmental Protection Agency (EPA) proposed new power plant carbon pollution standards that, if strengthened, would go a long way to help meet the Biden administration’s goal of slashing carbon emissions in half from 2005 levels by the end of this decade. EN: First, why are these new standards such a big deal?
Union of Concerned Scientists
JULY 1, 2022
That’s because the case, which was about the nature and scope of EPA authority in regulating carbon emissions from existing power plants, turned on a rule that does not exist. EPA did not revoke EPA’s underlying authority to regulate greenhouse gas emissions under the Clean Air Act.
Union of Concerned Scientists
JULY 3, 2022
The majority 6–3 decision sharply curtails the EPA’s authority to set standards based on a broad range of flexible options to cut carbon emissions from the power sector—options such as replacing polluting fossil fuels with cheap and widely available wind and solar power coupled with battery storage. carbon emissions today.
Legal Planet
MARCH 6, 2023
Hydrogen can be used for medium-to-long-term energy storage, heat and power generation, and transportation. This is partly because hydrogen production is energy inefficient and––when derived from fossil fuels––still a significant source of carbon emissions. Inefficient end uses for hydrogen can further exacerbate this problem.
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