Why was the first earth day celebrated

Why was the first earth day celebrated 1 introduction to earth science   branches and systems

1 introduction to earth science branches and systems

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Why is Earth Day celebrated - Answers.com
Earth Day is celebrated to encourage awareness and appreciation of the environment. It is celebrated worldwide on April 22 each year with events designed to encourage ...
Last update Sat, 16 Mar 2013 23:57:00 GMT Read More

Why observe Earth Day on April 22? | Earth | EarthSky
The first Earth Day – April 22, 1970 – is sometimes said to have marked the beginning of the modern environmental movement. It predates the U.S. Environmental ...
Last update Thu, 24 Apr 2014 15:29:00 GMT Read More

Earth Day - Wikipedia
Earth Day is an annual event celebrated on April 22. Worldwide, various events are held to demonstrate support for environmental protection. First celebrated in 1970 ...
Last update Thu, 14 Jun 2018 19:43:00 GMT Read More

The History of Earth Day | Earth Day Network
Each year, Earth Day—April 22—marks the anniversary of the birth of the modern environmental movement in 1970....
Last update Sat, 16 Jun 2018 04:32:00 GMT Read More