The D.C. Circuit vacated a 2018 EPA rule that instituted a complete vacatur of its 2015 rule blocking the use of hydrofluorocarbons as replacements for ozone-depleting substances.

In an unpublished opinion, the Ninth Circuit held that the U.S. Forest Service's decision not to prepare an EIS for a tree-thinning project in Mount Hood National Forest was arbitrary and capricious.

A district court denied a motion for a preliminary injunction in a challenge against FWS' failure to act on pending elephant trophy import permit applications.

A California appellate court affirmed dismissal of a challenge to the South Coast Air Quality Management District's determination that an oil refinery project would reduce air pollution.