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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution
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Henry David Thoreau publishes Walden
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The term ecology is coined by German as Oeklogie by Ernst Heinrich Philipp August Haeckel
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The term acid rain is coined by Robert Angus Smith in the book Air and Rain.
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The term smog is coined by Henry Antoine Des Voeux in a London meeting to express concern over air pollution
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The US Congress created the National Park Service
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The sputnik 1 satellite was launched by the USSR.
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Sputnik 1 satellite was launched by the USSR
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Two monkeys were the first animals to return alive from a space mission.
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The USSR sent Yuri Gagarin into space.
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Rachel Carson publishes Silent Spring
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Valentina Tereshkova was the first woman sent into space by the Soviet Union.
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The Russians carried out the first ever spacewalk.
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The Apollo 8 picture of Earthrise
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Neil Armstrong from the USA was the first man to walk on the moon.
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Millions of people gather in the United States for the first Earth Day organized by Gaylord Nelson, former senator of Wisconsin, and Denis Hayes, Harvard graduate student. US Environmental Protection Agency established
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Russia launched the first ever space station.
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First spacewalk without being attached to spacecraft.
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Montreal protocol on substances that deplete the ozone layer entered into force
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The Kyoto Protocol was negotiated in Kyoto, Japan in December. Countries that ratify this protocol commit to reduce their emissions of carbon dioxide and five other greenhouse gases
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They started to make the international space station.
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U.S. rejects the Kyoto Protocol
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A business man from California paid 20 million dollars to go into space.
