"A federal court [Tuesday] ruled that U.S. EPA cannot require companies to replace potent heat-trapping chemicals with other substances, dealing a blow to part of the Obama administration's climate change legacy.

The court found that the Obama EPA exceeded its authority under the Clean Air Act with a 2015 rule that eliminated some uses for hydrofluorocarbons (HFCs) — which were previously accepted as alternatives to ozone-depleting substances — and approved certain replacements.

The three-judge panel of the U.S. Court of Appeals for the District of Columbia Circuit sent the rule back to EPA."

Amanda Reilly reports for Greenwire August 8, 2017. [2]