This research guides provides an overview of resources and search strategies for researching U.S., state, and foreign Environmental Law: subject headings, major U.S. laws, federal agencies, and court and agency decisions. It also identifies loose-leaf sources for staying current on legal, legislative, regulatory, and policy developments in environmental law; sources for tracking proposed legislation and regulation; and sources for researching legislative histories. Additionally, this guide lists selected secondary sources - journals, specialized databases, and websites.