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1956- chemical company released toxic methyl mercury into waste water in Japan
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1962- raised awareness for the threat of pesticide DDT to organisms higher up in the food chains
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1970's- Greenpeace organised action to prevent whaling
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1984- Explosion at Indian union carbide plant released toxic gases into the atmosphere, killing almost 10,000 people in 72 hours
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1986- Nuclear power plant meltdown reinforced negative opinions on nuclear power
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1992- focus on sustainable development, impact likely to be felt globally, stated that nothing less than a complete transformation of our attitudes and behaviour would bring about necessary changes
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2006- Global warming knowledge becomes widespread, mainstream political figure championed environmental issues for the first time, global warming information was made accessible to a wider audience via the film, film changed attitudes and raised awareness about climate change