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,
Montreal flood of 1987 Montreal Metro, buses and suburban train service were stopped. The basement of an elderly care hospital in the Saint-Henri neighbourhood was flooded and 240 patients were left without electricity, food, and health services for a while. Most home insurance claims were declined unless the insured was specifically covered by a clause concerning flood. However, the car owners were covered. The Quebec government promised monetary help but only 20 to 40% of the expected C$40 million was ever distributed. Court cases against the municipal authorities, including a class action, were rejected as the flood was considered in legal terms an "Act