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Diesel is the Reason for the Sneezin’: Cleaner Holiday Deliveries are on the Horizon

Union of Concerned Scientists

A 2021 meta-analysis of over 40 peer-reviewed studies on the subject concluded that “there is no particular type of shopping that has an absolute environmental advantage and it is in no way possible to shop ourselves out of the environmental crisis.” How would that change if I hopped on the electric bus route at the end of my block?

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Ask a Scientist: UCS Transportation Program Adds Equitable Mobility to its Portfolio

Union of Concerned Scientists

In 1963, a typical car—which ran on leaded gasoline without pollution control devices— emitted 520 pounds of hydrocarbons, 1,700 pounds of carbon monoxide, and 90 pounds of nitrogen oxide every 10,000 miles traveled. Even so, cars and trucks are still making us sick—and killing us. I recently caught up with Kevin X.

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Replacing California’s Oldest and Dirtiest Cars Will Save Money and Lives

Union of Concerned Scientists

Older vehicles (pre-2004) make up 19% of the state’s passenger vehicles and only 12% of miles driven, yet they emit almost 3 times as much smog-forming, nitrogen-oxide pollution as all 2004 and later vehicles combined. These pollutants react in the atmosphere to form harmful particulate matter pollution known as PM 2.5.

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Ask a Scientist: Gas Plants Disproportionately Harm Marginalized Communities

Union of Concerned Scientists

They accounted for most of the failed generating capacity in a number of recent extreme weather events, including Winter Storm Uri in 2021 and Winter Storm Elliott in 2022, according to Gas Malfunction , a new Union of Concerned Scientists (UCS) issue brief. First, there’s air pollution.

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California and Key Stakeholders Join Warehouse Regulation Lawsuit

Clean Energy Law

On October 13, 2021, the State of California, on behalf of the Office of the Attorney General and the California Air Resources Board (CARB, and together, the State), filed a motion to intervene in a federal lawsuit challenging the South Coast Air Quality Management District (SCAQMD or the District) adoption of Rule 2305. By Joshua T.

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Good News—and Bad—about Fossil Fuel Power Plants in 2023 

Union of Concerned Scientists

GW record from 2021. In 2021 alone, the plants slated for retirement emitted more than 28,000 tonnes of nitrogen oxides (NO x ), 32,000 tonnes of sulfur dioxide (SO 2 ), and 51 million tonnes of carbon dioxide (CO 2 ), according to EIA data. Compiled by UCS from Energy Information Administration data as of January 2023.

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Reliance on Gas Power Plants Fuels Inequity

Union of Concerned Scientists

Most notable of these polluting emissions are nitrogen oxides (NOx). During Winter Storm Uri in 2021, a devastating storm where power outages contributed to hundreds of deaths , Texans saw the extreme of price volatility from over-dependence on the gas system in a competitive power market.