2027 Greenhouse Nitrogen Oxides 
Union of Concerned Scientists
JANUARY 21, 2025
Trump is targeting both federal and CA vehicle standards in his recent executive order standards that not only reduce climate emissions but also slash air pollutants like nitrogen oxides and particulate matter. Undermining these rules will have major negative environmental, health, energy, and consumer impacts.
Union of Concerned Scientists
FEBRUARY 10, 2025
emissions, and just under 15 percent of climate-warming greenhouse gas emissions from the states on-road vehicles. EPA 2024 Additionally, emissions of climate-warming greenhouse gases from trucks are on the rise, up nearly 80 percent in the past 3 decades compared to a less than 10 percent increase among light-duty passenger vehicles.
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Legal Planet
APRIL 10, 2025
And the search for gold bars has shockingly been fruitless EPA Administrator Lee Zeldin has said that the greenhouse gas reduction program was vulnerable to waste, fraud, and abuse. And the secretary likes chocolate-chip cookiespreferably freshly baked and still warm, the Atlantic reported , without apparently being added to a Signal chat.
Union of Concerned Scientists
MARCH 25, 2025
Cleaner cars, cleaner air Our Cleaner Cars, Cleaner Air Report showed that while pre-2004 cars make up fewer than 20% of the cars on the road, they are responsible for the majority of tailpipe pollution because they produce higher amounts of lung-damaging particulate pollution and contribute significantly more smog-forming nitrogen oxide emissions.
Union of Concerned Scientists
AUGUST 5, 2024
The call for authors for the Cities report will take place between August 9-September 20 of this year with expected final report review by the Panel in March 2027. The IPCC will issue a call for authors in the upcoming weeks with expected publication of the report in the second half of 2027.
Union of Concerned Scientists
OCTOBER 4, 2023
leader in cleaning up the light duty fleet quietly released its own proposal in August: the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) has proposed to improve fuel economy of passenger cars and trucks steadily from 2027 through 2032 and heavy-duty pickups and vans from 2030 to 2035.
Union of Concerned Scientists
OCTOBER 13, 2022
The Advanced Clean Fleets (ACF) rule has the potential to significantly reduce climate-warming greenhouse gas (GHG) emissions as well as harmful air pollutants like fine particulates (PM2.5) and nitrogen oxides (NOx) from the numerous commercial and government fleets of MHD vehicles in the state.
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