Prostitution in China of such measures was to gradually reduce the number of brothels in each city until the point where a "Beijing-style" closure of the remaining brothels was deemed feasible and reeducation could begin. Reeducation programs were undertaken on the largest scale in Shanghai, where the number of sex workers had grown to 100,000 following the Second Sino-Japanese War. By the early 1960s, such measures had basically wiped out visible forms of prostitution from mainland China. According to the People's Republic of China (PRC) government, venereal diseases were almost completely eliminated from the mainland contemporaneously with the control of prostitution. To mark
Environmental issues in China cumulative largest. China has ratified the Kyoto Protocol, but as a non-Annex I country is not required to limit greenhouse gas emissions under terms of the agreement. Various forms of pollution have increased as China have industrialized which has caused widespread environmental and health problems. China has responded with increasing environmental regulations and a build-up of pollutant treatment infrastructure which have caused improvements on some variables. As of 2013 Beijing, which lies in a topographic bowl, has significant industry, and heats with coal, is subject to air inversions resulting in extremely high levels of pollution in winter months. In response