15 Awesome Earth Day Posters: 1970-Today

Posted on April 20, 2011

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Classic Earth Day posters from the past 31 years. You can see the art change over the years. Which one is your favorite?

1970

1971

1982

1990

1992

1995

2000

2001

2005

2007

2008

2009

2011

Sources: RedGreen&Blue

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