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Leopold writers ‘A Sand County Almanac’
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UK’s ten National Parks are established
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First Earth Summit — UN Conference on the Human Environment
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C.I.T.E.S. Formed by IUCN
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James Lovelock publishes ‘Gaia — A new look at life on Earth’ and presents the ‘Gaia hypothesis’
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Bhopal Disaster
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Biosphere 2
Biosphere 2 video -
U.N. Rio Earth Submit
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Julia Butterfly
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Kyoto protocol becomes a legal requirement
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