A Pennsylvania appellate court partially struck down Act 13, which pertains to oil and gas operations in the Marcellus Shale, as unconstitutional. The Act repealed Pennsylvania’s Oil and Gas Act and replaced it with a codified statutory framework regulating oil and gas operations in the Commonweal...

The D.C. Circuit upheld four EPA rulemakings governing greenhouse gases. EPA issued the rules following the U.S. Supreme Court's decision in Massachusetts v. EPA, 549 U.S. 497 (2007), in which the Court clarified that greenhouse gases meet the definition of an air pollutant under the CAA. Petit...

A New York court dismissed individuals' lawsuit challenging the legality of New York's participation in the Regional Greenhouse Gas Initiative (RGGI), a regional cap-and-trade plan for carbon dioxide (CO2) emissions. The individuals claimed they had standing because, as electric utility ratepaye...

The Ninth Circuit held that the United States can extinguish California's public trust rights when exercising its federal power of eminent domain. The case involves 32.42 acres of land that the U.S. Navy has continuously leased from the state since 1949. The parcel is subject to California's pub...