A California court rejected a challenge to the emissions offset component of California's greenhouse gas (GHG) cap-and-trade program promulgated by the California Air Resources Board (CARB) under the Global Warming Solutions Act of 2006. Under the program, all offsets must be additional, meaning tha...

A district court held that a mining company that operates a smelter in Canada is liable as an arranger under CERCLA for the release and threatened release of hazardous substances in the Upper Columbia River. The company stipulated that it discharged slag and effluent into the Columbia River from its...

The D.C. Circuit denied a petition for rehearing of an earlier decision in which it 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, 37 ELR 20075 (2007), in which the Court clarified that g...