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Discovery of health problems became a media event

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equipped cars a device that removes pollutants from car exhaust

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Zero Population Growth formed
Raise awareness of the connection between rapid population growth and environmental destruction

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Congress amended the Clean Air Act of 1963

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Sierra Club had come into being.
Original purpose enjoy and protect the mountains of the west
Now it expanded this mission to include preserving wilderness and protecting the environment across nations

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Slogan from Zero Population Growth(ZPG) to encourage families to stay small

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Save Water

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The first Earth Day in 1970 grew public concern and caused new legislation to be passed for the next decade which created the Environmental Protection Agency (EPA)