The lawsuit was originally filed in 2015 under President Obama. It says the government has ignored and even encouraged climate change, violating people's constitutional rights to life, liberty and property.
A three judge panel for the 9th Circuit Court of Appeals described the case as "compelling." But it ruled 2 to 1 that the argument "must be made to the political branches" or to voters, who "can change the composition of the political branches through the ballot box."
The dissenting judge argued, "It is as if an asteroid were barreling toward Earth and the government decided to shut down our only defenses. Seeking to quash this suit, the government bluntly insists that it has the absolute and unreviewable power to destroy the Nation."
The legal organization supporting the young plaintiffs says it will request a review from the full 9th Circuit court.