Environmental policy of the United States from the sun. Chlorofluorocarbons (CFCs), which were used beginning in the 1930s in a number of important areas, were determined in 1974 to be responsible for much of the depletion of the ozone layer. Four years later, the EPA and FDA banned CFCs in aerosol cans. As research in the 1980s indicated that the problem was worse than before, and revealed a controversial massive hole in the ozone layer over Antarctica, three international agreements were made to reduce the ozone-damaging substances- the Vienna Convention, the 1987 Montreal Protocol, and a third agreement in 1990 in London. In the United States,
Protocol (politics) Discrimination against Women is supplemented by an Optional Protocol. Protocol (politics) Protocol can mean any logbook or other artifact (forged or authentic) of a political meeting between persons from different nations. The most notorious example of a forged logbook is "The Protocols of the Elders of Zion". In international law, a treaty that supplements or adds to a pre-existing treaty is often given a name that includes "Protocol" in its title. For example, the Kyoto Protocol was supplemental to the United Nations Framework Convention on Climate Change; Protocol I, Protocol II, and Protocol III supplement the 1949 Geneva Conventions; and