Four-Power Authorities of Germany. Both were in West Berlin, Germany, and existed during the Cold War from 1948 to 1989. These were the Berlin Air Safety Center and Spandau Prison (which was demolished in 1987 when Rudolf Hess, the sole remaining prisoner, died). These two organizations were uniquely four-powered in that American, British, French, and Soviet authorities cooperated in their management. This was a far cry from the intensely adversarial relations the allies had with the Warsaw Pact leader in almost every other aspect of world affairs during this time. Both organizations remained low-profile and secretive during their existences to avoid highlighting
Suicide in China among rural residents. However, a 2014 study conducted by the Centre for Suicide Research and Prevention at the University of Hong Kong reported that China's suicide rate has dropped significantly, among the lowest levels in the world. An average annual rate of about 9.8 people out of every 100,000 died by suicide as of 2009 to 2011, a 58% drop, largely as a result of population migration from rural areas and urbanization of middle class. Paul Yip, a co-author of the recent study and professor at the University of Hong Kong, said "no country has ever achieved such a rapid