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  A dioxin cloud from an accident at a chemical plant near Seveso, Italy, sickens at least two thousand people
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  Increased urbanization, resource usage and pollution
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  Conservation movement grows. Concern for tigers, rhinoceros, etc.
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  Resource use (especially fossil fuel use) and pollution increased. Human population rises sharply.
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  Concept of ‘stewardship’ is applied to nature
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  Emphasizes the ability of food chains to accumulate toxins into higher tropic levels, including into humans.
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  Declaration of UN conference.
 Action plan for the human environment.
 Environment fund established.
 Formation of UN environment programme (UNEP)
 Earth summits planned at ten-year intervals
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  Systems approach to studying the environment begins. Nature seen as self regulating.
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  Political pressure placed on governments
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  Ineffective
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  Worlds worst industrial disaster
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  The leak of methyl isocyanate gas from a chemical plant operated by U.S. company Union Carbide in Bhopal, India, kills at least four thousand people