It has stopped criminal prosecutions of people who install “defeat devices,” which make diesel trucks faster and more efficient but also dirtier.

© Acacia Johnson for The New York Times

It has stopped criminal prosecutions of people who install “defeat devices,” which make diesel trucks faster and more efficient but also dirtier.

The parasitic, flesh-eating fly has now been confirmed in cows, goats and dogs.

US president announces plans for two new coal plants, in Alaska and West Virginia, using Defense Production Act

Donald Trump is using wartime presidential authority to hand $700m to coal-fired power plants in the US, the latest move by the president to bolster what he called “clean, beautiful coal”, despite it being the dirtiest of fossil fuels.

“Today, we’re taking historic action to bring down the price of energy and the cost of living for all Americans with the power of clean, beautiful coal,” he said at a press conference on Thursday.

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© Photograph: Adrees Latif/Reuters

© Photograph: Adrees Latif/Reuters

© Photograph: Adrees Latif/Reuters

New guidance from the Energy Department would prevent people from receiving rebates after making such swaps.

© Bing Guan for The New York Times

The rules were established by the Biden administration after research linked the compounds to a range of serious health problems.

© Haiyun Jiang/The New York Times

The administration is delaying a phaseout of hydrofluorocarbons, potent planet-warming chemicals used in air-conditioning and refrigeration.

© Gene J. Puskar/Associated Press

The finding effectively paves the way for continued use of atrazine, a widely used herbicide that has been linked to birth defects and cancer in humans.

© Julie Ingwersen/Reuters

A new wave of start-ups are trying to harvest emissions-free energy from inside the Earth, but the industry still faces significant challenges.

© Eduardo Munoz/Reuters