A state court held unconstitutional a provision of the Montana Environmental Policy Act that prohibited state agencies from considering the impacts of greenhouse gas (GHG) emissions on climate change in environmental reviews. A group of youths challenged the prohibition, arguing it was causing or co...

A district court granted the city of Charleston's motion to remand to state court its lawsuit against fossil fuel companies for allegedly contributing to climate change by producing and selling fossil fuel products while deceiving consumers and the public about the dangers associated with them. The ...

A district court granted a group of youths' motion for leave to file a second amended complaint in a lawsuit alleging the U.S. government failed to act on climate change and violated their right to a safe climate. The youths had argued that the government violated their constitutional rights under t...

The D.C. Circuit dismissed industry groups' petitions to review EPA's decision not to reconsider its 2009 finding that greenhouse gas (GHG) emissions from motor vehicles contribute to climate change and thus endanger public health and welfare. The groups initially petitioned EPA to reconsider its fi...

The Hawaii Supreme Court affirmed the Public Utility Commission's (PUC's) decision denying an energy company's request to supply energy to Hawaii Island using a biomass power plant. The company appealed, arguing the PUC misunderstood its mandate and held it to an unfair standard. The court disagreed...

The Eighth Circuit affirmed a district court ruling granting the state of Minnesota's motion to remand to state court a climate liability lawsuit alleging that fossil fuel producers fraudulently marketed their products and misinformed customers about the dangers of fossil fuel use. Minnesota sued th...

A district court remanded back to state court two climate liability suits brought against oil companies. A city and county in Maryland had sued the companies in state court, alleging they concealed climate-related harms caused by fossil fuels. The companies removed the suits to federal court based o...

A district court granted in part and denied in part an oil company's motion to dismiss a CWA and RCRA citizen suit brought by an environmental group. The group alleged 14 counts against the company, arguing it violated the CWA and RCRA by failing to prepare its bulk storage and fuel terminal in New ...

The Third Circuit affirmed two district courts' orders remanding back to start court two climate liability suits bought against oil companies. Delaware and the city of Hoboken sued the companies in state court for state-law torts. The companies removed the suits to federal court, arguing removal was...

The Ninth Circuit affirmed a district court order remanding to state court two climate liability suits against numerous oil and gas companies. The city and county of Honolulu and the county of Maui sued in state court, arguing the companies knew about climate change, understood the harms that energy...