1957: Smoking 'causes lung cancer' The link between smoking and lung cancer is one of 'direct cause and effect', a report by the Medical Research Council finds.
1986: US guilty of backing Contras The International Court of Justice finds the United States guilty of violating international law by supporting rebels in Nicaragua.
1977: Home Secretary jeered on picket line Home Secretary Merlyn Rees appeals for calm following two weeks of violent clashes outside the Grunwick factory in north London.
