New fuel-economy standards, which President Trump said he finalized Saturday, would kill a federal effort to speed the transition to electric vehicles.

The agency has lost its independence and nearly a third of its staff, as Health Secretary Robert F. Kennedy Jr. and associates have tightened control.

Maintenance projects have been put off around the country and resources diverted to the president’s favored projects in Washington.

The prohibition on certain journalists was a stark escalation in President Trump’s war on the media, and will probably face a legal challenge.

A small, spotted tiger cat from Bolivia may just be the beginning of a wave of new small cat species.

Generation of electricity is the second largest source of carbon dioxide and other planet-warming gases in the United States.

The outdoor apparel maker joined environmental and Native American groups in challenging President Trump’s reduction of Bears Ears National Monument.

Glaciers and permafrost in the Himalayas are melting faster as temperatures rise, though scientists are still studying the exact causes of this week’s landslide.

Floodwaters swept away villages near the border between Nepal and the Tibet region of China.

Adam Kalkstein pushed back after department officials barred faculty from teaching that humans contribute to climate change, the lawsuit says.

Glaciers and permafrost in the Himalayas are melting faster as temperatures rise, though scientists are still studying the exact causes of this week’s landslide.

Under the proposal, states would no longer need to provide public notice or solicit comments on air pollution permits for data centers and other projects.

A hospitality manager for the Trump Organization traveled to Las Vegas to find a solution to problems at a national landmark. This is the untold back story of the fallout.

A hospitality manager for the Trump Organization traveled to Las Vegas to find a solution to problems at a national landmark. This is the untold back story of the fallout.

The state is a major importer of fracking wastewater, which gets pumped underground but doesn’t always stay there. The city of Marietta is fighting back.

A federal judge raised questions about the government’s handling of the subpoenas, which The Times said were an attempt to intimidate the free press.

The dunes sagebrush lizard, found only in the oil-rich Permian Basin, was classified as endangered two years ago.

As wildfires intensify, threatening more people, a nonprofit is studying how to rethink homes and neighborhoods to prevent catastrophe.

Native American tribes and environmental groups are expected to challenge the move to shrink the Bears Ears and Grand Staircase-Escalante National Monuments.

The rule change ends a safeguard that had been in place for 50 years and could hasten the demise of imperiled animals.

Matthew M. Wielicki has criticized the scientific consensus on global warming as alarmist. Now he’ll oversee a major federal report on the topic.

The office that produces the National Climate Assessment has been reconstituted, after the administration gutted it last year.

It is continent’s third spell of scorching weather since May. Europe is the world’s fastest-warming continent.

Fewer than 100 Rice’s whales remain on Earth. Researchers say sonic blasts from oil exploration are a top threat to the species. See and hear why.

Washington, DC

The Interior Department quickly gave nearly $100 million in contracts in a rush to beautify D.C.