A fire broke out at the Sandoz chemicals factory in Schweizerhalle near Basel on November 1, 1986, releasing a chemical cloud over the city and substances into the River Rhine. Thousands of river fish died and the effects were felt as far away as the Netherlands. (SF/swissinfo.ch, 2006)
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How a Swiss scientist saved 20 million people
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Herren, the subject of a new biography, tells swissinfo.ch how he managed to naturally control the bug using a method that involved shooting the insect’s natural enemy, a type of wasp, from aeroplanes across huge swathes of Africa. The scientist was only 31 when he took a job in the middle of a crisis: the…
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If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.