The U.S. Climate Change Litigation database is a joint project of the Sabin Center for Climate Change Law at Columbia Law School and Arnold & Porter. Michael B. Gerrard, then a partner at Arnold & Porter and now Faculty Director of the Sabin Center, and J. Cullen Howe, an environmental law specialist at Arnold & Porter, first created the U.S. Climate Litigation Chart in 2007. The U.S. chart is updated on a monthly basis, and currently includes 1506 cases* with links to 9901 case documents.