PORTLAND, Ore. (AP) — The U.S. Supreme Court has rejected another Trump administration request to halt proceedings in a lawsuit filed by young activists who say the government isn't doing enough to prevent climate change.

The high court said Monday that the government's request for relief is premature. The ruling came 10 days after the 9th U.S. Circuit Court of Appeals rejected the government's second request for an order directing a lower court to dismiss a case that's headed for trial Oct. 29 in Eugene, Oregon.

The lawsuit brought by 21 children and young adults asserts the government has long known that carbon pollution causes climate change but has failed to curb greenhouse gas emissions. They seek various environmental remedies.

The Supreme Court described the breadth of the lawsuit's claims as "striking." It said the question whether a court can provide an adequate resolution "presents substantial grounds for difference of opinion."