
The Supreme Court decided on May 26 to allow President Joe Biden’s administration to continue using a key metric in the fight against climate change.
The court’s order, in refusing to put back an order from a federal judge in Louisiana that had blocked the administration, is just one line long. But it represents a big setback for the Republican-led states that have been suing the president over the metric, known as the social cost of carbon: a measure, in dollars, of how much damage results from emitting 1 ton of carbon dioxide.