The morning sun reflects on the Gulf of Mexico and the Atlantic Ocean as seen from the Apollo VII spacecraft during its 134th revolution of the Earth on Oct. 20, 1968. (Photo by NASA/AFP/Getty Images)
Hippies In Park On Earth Day
A group of 'hippie' men and children sit in a park with tie-dyed tapestries on Earth Day, April 22, 1970. (Photo by Hulton Archive/Getty Images)
Earth Day 1970
"Earth Day" in New York, part of the largest organised event in American history to date, in 1970. (Photo by Peter Keegan/Getty Images)
Earth Day 1970
A crowd of people gather near a large poster that shows a speach bubble from planet Earth that reads 'Help!!', on the occaision of the first Earth Day conservation awareness celebration, New York, New York, April 22, 1970. (Phoro by Hulton Archive/Getty Images)
Earth Day 1970
Children use push brooms to sweep a city park during Earth Day, New York City, 1970s. (Photo by Hulton Archive/Getty Images)
Earth Day 1970
A girl wearing a face mask to highlight the problems of air pollution during the Earth Day celebrations in New York on April 22, 1070. (Photo by Keystone/Getty Images)
Earth Day 1970
Crowds gather by a George Washington statue in Union Square for Earth Day celebrations, New York City, April 22, 1970. (Photo by Hulton Archive/Getty Images)
Earth Day 2005
An image of the earth is displayed outside of a booth celebrating the 35th anniversary of Earth Day April 22, 2005 in New York City. (Photo by Spencer Platt/Getty Images)
Earth Day 2005
Images with an earth conservation theme are projected onto the wall of Grand Central Station on the 35th anniversary of Earth Day April 22, 2005, in New York City. (Photo by Spencer Platt/Getty Images)
Earth Day 2005
Trees and flowers adorn a midtown park on the 35th anniversary of Earth Day April 22, 2005, in New York City. (Photo by Spencer Platt/Getty Images)
Earth Day 2001
A protester holds a sign at an Earth Day rally April 22, 2001, in front of the United Nations in New York City. (Photo by Spencer Platt/Newsmakers)
Earth Day 2010
Volunteers prepare to plant trees on Earth Day, April 22, 2010, in northern Manhattan's Washington Heights neighborhood in New York. (credit: Stan Honda/AFP/Getty Images)
Earth Day 2010
A t-shirt worn by a volunteer from the Legg Mason company as they help plant a tree on Earth Day, April 22, 2010, on Sherman Avenue in northern Manhattan's Washington Heights neighborhood. (credit: Stan Honda/AFP/Getty Images)
Earth Day 2010
A man enjoys a break in Bryant Park on April 22, 2010 in New York City. (Photo by Spencer Platt/Getty Images)
Earth Day 2010
New recycling trash bins line the street at an Earth Day event in Times Square on April 22, 2010 in New York City. (Photo by Spencer Platt/Getty Images)
Alfa Development Launches Earth Day 2018 Event Series With OSMUNDA (RE)WILD Exhibition Preview Party
The Alfa Development Launch Earth Day 2018 Event Series With OSMUNDA (RE)WILD Exhibition Preview Party Gallery 151 on April 18, 2018, in New York City. (Photo by Eugene Gologursky/Getty Images)
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