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

Democrat Rob Bonta is preparing to fight the president’s rollback of a regulatory keystone on climate.

The partners behind a project in suburban Denver think they’ve found a way to accelerate the adoption of residential geothermal heating and cooling.

Data center developers are manipulating the Environmental Protection Agency’s air pollution permitting process to avoid emission controls and scrutiny of their projects, environmental advocates allege.

More than 90 percent of the estimated oil pollution in the oceans occurs within national waters – including in protected areas.

Sunrise Movement co-founder William Lawrence’s toss-up congressional race has drawn progressives, data center critics and the president.

It has been five years since China promised the United Nations to stop funding overseas coal projects.

While the president remains a climate-change denier, the war with Iran has triggered an unforeseen benefit in the fight against global warming.

Senators’ report says taxpayers face higher bills after "bargain" between president and major polluters.

Cameron, Louisiana, used to be the largest exporter of seafood in the U.S. Now, it’s one of the largest exporters of liquefied natural gas.

According to the Center for Biological Diversity, a Pennsylvania power plant has been leaching toxic chemicals into surrounding waters for years.

The province has far fewer orphan wells than other western provinces. Is that the result of successful regulators — or a lack of robust oversight?