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Makah Indian Tribe v. Exxon Mobil Corp.

A district court granted two Indian tribes' motion to remand to state court a challenge brought against fossil fuel companies for climate change-related harms. The tribes sued in state court, asserting claims for public nuisance and failure to warn. The companies removed the suit to federal court, a...

G.B. v. United States Environmental Protection Agency

A district court granted EPA's and OMB's motion to dismiss a challenge brought by California youth against certain agency policies for allegedly undervaluing the lives of children in cost-benefit analyses and thus harming them by failing to resolve the climate crisis. The youth argued the policies v...

Chamber of Commerce v. California Air Resources Board

A district court granted the state of California's motion to dismiss a challenge to two California laws—SB 253, Climate Corporate Data Accountability Act, and SB 261, Greenhouse Gases: Climate-Related Financial Risk—that require large businesses to publicly disclose their greenhouse gas emission...

Environmental Defense Fund v. United States Environmental Protection Agency

The D.C. Circuit vacated certain requirements under an EPA rule concerning the assertion and treatment of confidential business information (CBI) claims for information reported to or otherwise obtained by the Agency under TSCA. Trade groups challenged the rule, arguing it allowed for unlawful discl...

Held v. Montana

The Montana Supreme Court affirmed a trial court ruling that declared the Montana Environmental Policy Act (MEPA) violated youths' state constitutional right to a "clean and healthful environment." The youths argued a provision of MEPA that precluded analysis of greenhouse gas emissions in EAs and E...

Public Employees for Environmental Responsibility v. Regan

A district court granted EPA's motion to dismiss a TSCA citizen suit brought by environmental groups concerning fluorination. The groups sought to compel EPA to prohibit the company's fluorination practices, which produced per- and polyfluoroalkyl substances (PFAS), a class of carcinogenic chemicals...

Aloha Petroleum, Ltd. v. National Union Fire Insurance Co.

The Hawaii Supreme Court held that greenhouse gases (GHGs) were "pollutants" under several insurance policies' pollution exclusions and that an "accident" included an insured's reckless conduct for purposes of a challenge against fossil fuel companies for climate change-related harms. The city and c...

Food & Water Watch, Inc. v. United States Environmental Protection Agency

A district court held that fluoridation of water at 0.7 milligrams per liter (mg/L), the level presently considered “optimal” in the United States, posed an unreasonable risk of reduced IQ in children. Anti-fluoride groups and individuals had petitioned EPA under TSCA to regulate the fluoridatio...

Xerces Society for Invertebrate Conservation v. Shea

A district court granted summary judgment for conservation groups in a challenge to the Animal and Plant Health Inspection Service's (APHIS') recent update to a program concerning the use of pesticides to suppress grasshopper and cricket outbreaks. The groups argued APHIS' 2019 EIS and five state-le...