We are all affected by the law. Citizens frequently must make decisions that are influenced by laws and therefore should have some knowledge of the legal setting in which they must operate.
Tools addressing the legal setting include printed and computer materials on the law.
Environmental law is continually changing. You want to find current law that is the primary authority for the premise you are advocating. This may require consulting the U.S. Code, the Code of Federal Regulations, Federal Register notices, legislative proposals, state laws, state codes of regulations, municipal charters, local ordinances, and court decisions. These materials are generally available at law school libraries, courthouse libraries, and local regulatory agencies. Use of these research tools can help clarify the law and its application to an environmental problem.