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Timeline of pollution

1 byte removed, 09:40, 5 July 2019
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| 1940s || {{w|Air pollution}} || Crisis || {{w|Los Angeles}}, becomes one of the first cities to experience severe air pollution problems then called “gas attacks.”<ref name="History of Air Pollution">{{cite web |title=History of Air Pollution |url=https://nptel.ac.in/courses/105102089/air%20pollution%20(Civil)/Module-1/1.htm |website=nptel.ac.in |accessdate=15 May 2019}}</ref> || {{w|United States}}
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| 1946 || {{w|Water pollution}}, {{w|radioactive waste}} || Crisis || {{w|Ocean disposal of radioactive waste}}: First dumping operation takes splace place at Northeast Pacific Ocean (about 80 km off the coast of {{w|California}}).<ref name="Ocean Dumping of Nuclear Waste"/> || {{w|United States}}
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| 1948 || {{w|Air pollution}} || Crisis || The worst single incident of air pollution in the United States occurs in {{w|Donora, Pennsylvania}}, when severe industrial air pollution create a deadly smog. 20 people die and over 7,000 are injured.<ref>{{cite book | author=Davis, Devra | title=When Smoke Ran Like Water: Tales of Environmental Deception and the Battle Against Pollution|publisher=Basic Books|year=2002|isbn=978-0-465-01521-4}}</ref><ref name="Water and Air Pollution"/> || {{w|United States}}
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