The Tenth Circuit affirmed dismissal of ranching groups' challenge to FWS' designation of critical habitat for the endangered New Mexico meadow jumping mouse. The groups argued FWS' methodology for analyzing economic impacts of the designation violated the ESA and court precedent, that the Service f...

A district court denied environmental groups' motion for partial summary judgment in a CAA citizen suit brought against a steel company concerning hydrogen sulfide and sulfur dioxide emissions at its production facilities in Pennsylvania. The groups argued the company repeatedly violated the CAA, th...

A district court granted in part and denied in part conservation groups' motion for summary judgment in a challenge to NMFS' 2019 decision not to list the alewife and blueback herring as threatened under the ESA. The groups argued that NMFS failed to adequately account for climate change-related har...