Since this is not my area of expertise, I searched Google under the key words "'earth day'" to get these possible sources:
http://en.wikipedia.org/wiki/Earth_Day
http://holidays.kaboose.com/earth-day/
http://www.epa.gov/earthday/
http://earthday.envirolink.org/
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.
why do we celebrate earth day? is it important to celebrate earth day?
1 answer