The American Geological Institute's governmental-affairs arm tracks U.S. environmental legislation and provides links to other information sources. See AGI's home page at
The Council on Environmental Quality issues extensive information on environment indicators, many relevant to pollution-control legislation and agreements discussed in this chapter:
This site offers links to comprehensive discussions of the Canadian Environmental Assessment Act. Materials from the Canadian Environmental Assessment Agency can be found via
Its Environmental Affairs Program (EAP) includes information on NEPA generally, and EISs referred to USGS for comment specifically, accessible via the EAP home page at
A wealth of information on the Montreal Protocol specifically and ozone generally is available via the Ozone Secretariat of the U.N. Environment Programme at