Atmosphere Electricity Nitrogen Oxides 
Union of Concerned Scientists
OCTOBER 15, 2024
The fuel, commonly known as natural gas, now powers the biggest portion of US electricity generation—more than 40 percent. Moreover, gas-fired electricity generation hurts communities and the environment in numerous additional ways beyond climate. Good decision making starts with having good information about details like those.
Union of Concerned Scientists
MAY 21, 2025
are formed indirectly in the atmosphere from other toxic pollutants also emitted from tailpipes. Medium and large trucks, which make up just 1 in 10 vehicles on our roads, contribute disproportionately to 58 percent of the ozone-forming nitrogen oxides and 52 percent of PM 2.5 Secondary PM 2.5 From 2000 to 2020, national PM 2.5
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Union of Concerned Scientists
AUGUST 21, 2024
The Inflation Reduction Act (IRA) included a major—forthcoming—refresh for one of the biggest policy drivers of the nation’s clean energy transition to date: tax credits subsidizing the deployment of clean electricity resources. the GHGs emitted into the atmosphere by a facility in the production of electricity—is not greater than zero.
Union of Concerned Scientists
FEBRUARY 9, 2024
Responsible for 12 percent of all US global warming emissions from human activities, methane traps significantly more heat per molecule than carbon dioxide, making it 86 times more harmful for the first 20 years after it is released into the atmosphere. EN: What needs to be done to make the electric grid more equitable—and reliable?
Union of Concerned Scientists
SEPTEMBER 11, 2024
More efficient (and cleaner) gasoline cars are part of the reason why gasoline use is down, but the increasing number of electric vehicles being sold in the state will likely drive gasoline use down even further. But a growing share of the reductions is likely due to the increasing sales of electric vehicles (EVs).
Union of Concerned Scientists
NOVEMBER 16, 2022
of the observed rise in atmospheric carbon dioxide and 52 percent of the rise in global average temperatures between 1880 and 2015. The report found that these states can meet all of their electricity consumption with renewables by 2035, even with a significant increase in demand due to the electrification of transportation and heating.
Union of Concerned Scientists
JULY 3, 2022
Had the court ruled fully in favor of the EPA— or not taken the case at all —a much more meaningful dent in power plant carbon emissions would be within reach, while also delivering much greater reductions in other dangerous co-pollutants from burning fossil fuels such as particulate matter, mercury, nitrogen oxides and sulfur dioxide.
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