A district court remanded back to state court Massachusetts' consumer protection lawsuit concerning an oil company's accounting of climate change risks. The state argued that the company misled and deceived its investors and consumers about the climate risks of fossil fuel products, and moved to rem...

The Ninth Circuit affirmed in part a district court ruling granting California counties' and cities' motions to remand to state court a lawsuit against oil companies alleging nuisance and other causes of action arising from the role of fossil fuel products in global warming. The companies argued the...

The Ninth Circuit vacated and remanded a district court ruling denying San Francisco's and Oakland's motion to remand to state court a lawsuit alleging that oil companies make and sell products that create a public nuisance—sea-level rise—when combusted. The cities argued the district court erre...

The Third Circuit affirmed a district court ruling that the U.S. government was not liable to a coatings company for cleanup costs at a chromite ore processing plant with which it was involved during World War I and World War II. The district court concluded the government was not subject to operato...

The U.S. Supreme Court affirmed in part and vacated in part the Montana high court's ruling in a lawsuit concerning cleanup actions across a 300-square-mile Superfund site in Butte. Landowners whose properties are located within the site brought trespass, nuisance, and strict liability claims under ...

A district court granted in part and denied in part environmental groups' motion for summary judgment in a challenge to EPA's approval of an Oklahoma program regulating the disposal of coal combustion residuals. The groups argued that EPA failed to perform its statutory duty under RCRA to develop an...

A district court stayed an environmental group's climate change lawsuit against an oil company concerning a CWA permit for its petroleum storage facility in Massachusetts. The group argued that the permit required the company to consider predictable weather patterns, including flooding and severe st...

The Ninth Circuit reversed a district court ruling that a group of youths had standing to sue the U.S. government for allegedly failing to act on climate change and violating their right to a safe climate. The youths argued that the government violated their constitutional rights under the Fifth and...

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New York's high court dismissed the state's securities fraud lawsuit concerning an oil company's accounting of climate change risks. The state argued that the company made misrepresentations and omissions that were material to its investors about how climate change would affect its business by using...