The federal judges noted "the Forest Service's serious environmental concerns that were suddenly, and mysteriously, assuaged in time to meet a private pipeline company's deadlines."
As a major climate conference nears its end in Poland, negotiators are still haggling over the rules nations must follow in order to meet their commitments to reduce greenhouse gases.
A U.N. climate report says the only way to avoid the worst climate impacts will be to suck carbon emissions out of the air. Researchers are trying to find a feasible way to do that.
Ignoring pressure from President Trump to keep the oil flowing, OPEC, Russia and other producers have agreed to cut production. They hope to stem a 30 percent drop in oil prices in recent weeks.
The Interior Department is moving forward on revisions to Obama-era conservation plans for the greater sage grouse. The changes would ease restrictions on energy development.
The Trump administration wants to reverse a rule that would have required new coal plants to have expensive technology to capture their carbon dioxide emissions.