Republican-led states and the coal industry are all but certain to challenge the rules in court.

Mammoth, a giant machine in Iceland that will pull planet-warming carbon dioxide out of the air.

Shane Rose, of Australia’s Olympic team, during the Tokyo Summer Games in 2021. He wore considerably less clothing during a recent event.

Unusually warm weather prevented full-scale competition at the Snow Polo World Cup in St. Moritz, Switzerland.

A portion of boreal forest in northern Quebec. A study found that commercial logging in Quebec and neighboring Ontario has caused the removal of 35.4 million acres of forest.

A carbon capture plant in Tracy, Calif.

ExxonMobil’s acquisition of Pioneer Natural Resources creates a shale oil behemoth in the Permian Basin, the heart of the Texas and New Mexico oil patch.