The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Der Kratersee Nyos in Kamerun reichert in seinen untersten Schichten seit seiner Entstehung vor ca. 400 Jahren Kohlenstoffdioxid (CO2) magmatischen Ursprungs an. Am 21. August 1986 kam es durch eine Vermischung der mit CO2-gesättigten Wasserschichten zu einer spontanen Ausgasung. In Form einer Wolke strömte das giftige Gas in die umliegenden Dörfer. Etwa 1700 Menschen erstickten und mehrere tausend...