The Ninth Circuit upheld the U.S. Army Corps of Engineers' decision allowing a hydroelectric plant that operates at the Snoqualmie Falls to lower dam waters in the channel above the falls in order to mitigate upstream flooding problems while it undergoes plant upgrades and modifications. The ope...

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...