The American President whose eleven-state conservation tour was a precursor to Earth Day:
Who is John F. Kennedy?
United States Senator who first proposed Earth Day:
Who is Gaylord Nelson?
The U.S. city that issued the first Earth Day proclamation:
What is San Francisco?
Folk singer who was the keynote speaker and performer during the first Earth Day march in Washington D.C.:
Who is Pete Seeger?
Popular Earth Day slogan sung during the first Earth Day march
What is "All we are saying is give Earth a chance?"
Presently, the number of countries that celebrate Earth Day:
What is 140?