A district court held that San Francisco and Oakland, California, may not remove back to state court their climate change public nuisance actions against several oil companies. The defendants—the largest cumulative producers of fossil fuels worldwide—timely invoked federal common law as a ground...

The Ninth Circuit held that NOAA did not go beyond its authority when it took climate change into account when considering the ESA status of the Arctic ringed seal. In 2012, NOAA listed the Arctic ringed seal as threatened based on projected sea ice loss. Oil and gas companies challenged the ruling,...

The U.S. Supreme Court, in an unsigned judgment and decree, ordered Wyoming to pay Montana $20,340 in damages, plus $67,270.87 in costs, for reducing the amount of water available in the Tongue River in violation of the Yellowstone River Compact. The Compact protects pre-1950 appropriative rights to...

The Ninth Circuit upheld a lower court's dismissal of a tribe's NEPA challenge to a DOI guidance that did not consider its interest when allocating the water rights of the Colorado River. The tribe contended that it was unlawfully excluded from DOI 2001 and 2008 guidances that outlined how water is ...