Category: EPA regulation of CO2

Without being a lawyer it is hard to figure out why this is still in play legally after the Supreme Court several years ago ruled that CO2 can be regulated as an air pollutant, same as sulfurous gases and (at a guess) foul smells from a stockyard, but it is. Such thoughts occur on learning of the news this week that in DC a US Court of Appeals rejected a multi-industry and red-state suit arguing against EPA regulations of the sort to which the top court already gave a green light.

The issues here are frequent elements in environment and science journalism. But a federal court ruling falls naturally to those on the legal beat at news organizations big enough to have clearly defined beats. Good thing too. Most science and...