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...
The Fifth Circuit granted the Biden Administration's motion to stay a district court ruling enjoining federal agencies from implementing interim estimates on the social cost of greenhouse gas emissions. States had argued the president lacked authority to promulgate and enforce the estimates; that th...
The Second Circuit affirmed in part and dismissed in part a district court ruling in a lawsuit brought by an oil company against the New York and Massachusetts attorneys general. The company had argued the states' investigations into the company's allegedly deceptive speech concerning climate change...
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...
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...
The Alaska Supreme Court affirmed, 3-2, a lower court's dismissal of a climate liability lawsuit brought against the state of Alaska. Alaskans argued the state's natural resource development was contributing to climate change and adversely affecting their lives. The lower court dismissed the suit, c...
A district court granted Delaware's motion to remand to state court its climate liability lawsuit against fossil fuel companies. Delaware argued it had suffered, and would continue to suffer, damages from climate impacts caused by the companies' denial of and disinformation about the existence, caus...
The First Circuit affirmed the Massachusetts Department of Environmental Protection's (MDEP's) decision to issue an air permit for a natural gas compressor station in Weymouth, Massachusetts. Neighboring cities and individuals argued MDEP failed to follow its own established procedures by eliminatin...
The D.C. Circuit granted a trade group's petition to review a 2016 rule issued by EPA and the National Highway Traffic Safety Administration that set greenhouse gas emissions and fuel efficiency standards for medium- and heavy-duty engines and vehicles. The group challenged the agencies' authority t...
A district court remanded to state court a climate liability lawsuit brought by the city of Hoboken, New Jersey, against large oil and gas companies. The city filed suit in state court, alleging the companies' decades-long campaign to downplay the effect of fossil fuel usage on climate change had da...