Trump Said Auto Emissions Don’t Affect the Environment. That’s Not True.

The president wants to weaken limits on tailpipe pollution. Scientists say it’s driving climate change and taking human lives “every day.”

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How Lee Zeldin Went From Environmental Moderate to Dismantling the E.P.A.

He once talked about the need to fight climate change. Now, he embraces Elon Musk, lavishes praise on the president and strives to stand out in a MAGA world.

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L.A. Firefighters Who Fought Blazes Show Elevated Mercury and Lead Levels

The findings, which compared the firefighters’ blood samples against those taken from other firefighters after past fires, suggest unique risks to blazes that burn in populated areas.

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A New Series in The Times, Inspired by You

Across the country, in red and blue states, everyday people, local groups and government officials are making creative plans that protect the environment. This year, we’ll be telling you about them.

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E.P.A. Offers a Way to Avoid Clean-Air Rules: Send an Email

Invoking an obscure provision, it said power plants and others could write to ask for exemptions to mercury, arsenic and other restrictions and that “the president will make a decision.”

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E.P.A. Investigations of Severe Pollution Look Increasingly at Risk

The agency will no longer shut down “any stage of energy production,” absent an imminent threat, a new memo says, and will curtail efforts to cut pollution in poorer areas.

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Trump Administration Aims to Eliminate E.P.A.’s Scientific Research Arm

More than 1,000 chemists, biologists and other scientists could be laid off under a plan to dismantle the Office of Research and Development.

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E.P.A. Declares ‘Greatest Day of Deregulation Our Nation Has Seen’

Lee Zeldin, the E.P.A. administrator, reframed his agency’s mission, saying it is to make it cheaper to buy cars, heat homes and run businesses.

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Los Angeles Wildfires Leave Residents Worried About Contaminated Soil

Federal agencies are removing topsoil from burned areas but will not test it for contaminants. So scientists and residents are testing fire-affected properties themselves.

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U.S. Embassies Halt Air Quality Monitoring Abroad

Since 2008, embassies and other diplomatic posts had been publishing data about local air quality. In many countries, it was the only reliable source of such information.

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