UCD Geology
International Year of Planet Earth


earth rise photo
Earth Rise
Credit: NASA, Apollo 8 Crew

April 22 - Earth Day

On April 22, 1970, the first Earth Day
was celebrated by 20 million Americans
around the country and on college campuses.

April [ 10 ] [ 12 ] [ 15 ] [ 18 ] [ 19 ] [ 19 & 21 ] [ 22 ] [ 26 ] [ 30 ]
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