The German Swiss International School (GSIS; German: Deutsch-Schweizerische Internationale Schule; Chinese: 德國瑞士國際學校 / 德瑞國際學校) is an international school in Hong Kong established in 1969 by German and Swiss families looking for a bilingual German-English education in an international setting. Beginning with 73 students in its inaugural year, GSIS …

Clandestine chemistry is chemistry carried out in secret, and particularly in illegal drug laboratories.Larger labs are usually run by gangs or organized crime intending to produce for distribution on the black market.Smaller labs can be run by individual chemists working clandestinely in order to synthesize smaller amounts of controlled substances or simply out of …