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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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Ask a Scientist: The US Has to Do More to Meet Its Carbon Emissions Reduction Goals

Union of Concerned Scientists

The legislation committed nearly $400 billion to support, among other things, wind and solar power, battery storage, electric vehicles, and other clean energy technologies that will make a significant dent in US heat-trapping emissions. Last year, Congress passed the most ambitious climate bill ever enacted, the Inflation Reduction Act.

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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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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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Ask a Scientist: Two Dozen States Can Meet 100 Percent of Electricity Demand with Renewables by 2035

Union of Concerned Scientists

Emissions of sulfur dioxide and nitrogen oxides from power plants in alliance states drop 88 percent and 77 percent respectively by 2040. Under the no-new-policy scenario, sulfur dioxide and nitrogen oxides decline only by 27 percent and 18 percent, respectively.