A district court granted states’ motion to preliminarily enjoin federal agencies from implementing the Biden Administration’s interim estimates on the social costs of greenhouse gas emissions. The states argued the president lacked authority to promulgate and enforce the estimates or to consider...

A district court vacated and remanded FWS’ 2020 rule that removed the gray wolf from the ESA list of endangered and threatened wildlife. Environmental groups argued FWS violated the ESA by failing to analyze gray wolves across the entire lower 48 states and based its delisting decision on the purp...

The Tenth Circuit affirmed a district court’s order remanding to state court a climate liability lawsuit against fossil fuel companies. Municipalities in Colorado argued in state court that they faced substantial and rising costs from the threat of climate change, to which the companies had substa...