Large Law and National Law Perspective: Due to the large amounts of money at stake and the complexity of environmental law, this is a specialty generally found in large law firms or in-house law departments. Many large firms have practice groups devoted to environmental law. The growing public demand to improve environmental conditions from global to local levels is causing a flurry of environmental law activities. And this trend is likely to increase. Litigation is increasing at all levels. For example, two U.S. Supreme Court decisions on the Clean Water Act and wetlands environmental law issues were decided in 2006, and in April 2007 the Supreme Court decided the landmark case of (holding that greenhouse gases are pollutants and that EPA has authority to regulate them), which is spurring a great deal of administrative and judicial activity. Moreover, environmental litigation and enforcement actions generally involve arcane laws and regulations and devastating monetary liability. Larger law firms and organizations are thus best poised to handle such matters. In addition, they need to counsel their corporate clients to stay in compliance with environmental laws. Thus, they must keep abreast of the increasing flow of federal, state and local legislation, regulations, court and administrative decisions involving environmental controls.