Photo Essay

  • People release lanterns as part of Earth hour celebration on March 29, 2014 in Pontianak, Indonesia. Millions of people across the world in more than 6,950 cities across 152 countries are switching off lights for one hour today at 8:30 p.m. - 9:30 p.m., as a symbol for their commitment to the planet and to raise awareness about climate change.
  • The ancient Temple of Parthenon atop the Acropolis hill sits in the dark during the Earth Hour initiative in Athens on March 29, 2014.
  • The landmark Red Square falls dark during the Earth Hour 2014 campaign in Moscow, Russia, March 29, 2014. Earth Hour is a global event organized by the WWF and is held on the last Saturday of March annually, encouraging households and businesses to turn off their lights and other electrical appliances for one hour to voice their concern about climate change.
  • City view is seen before (up) and after (down) taking part in the celebration of Earth Hour at the Grand Indonesia shopping mall in Jakarta, Indonesia, March 29, 2014.
  • Times Square is seen after its lights were dimmed off as part of Earth Hour on March 29, 2014 in New York, N.Y.
  • This combo picture shows the St. Basil Cathedral (R) and Spasskaya tower of the Kremlin before Earth Hour (up-illuminated) and during Earth Hour (down-submerged into darkness) at the Red Square in central Moscow on March 29, 2014.
  • Chinese tourists stand in a pavilion which turned off its lights for Earth Hour at the West Lake in Hangzhou city, China's Zhejiang province, March 29, 2014.
  • Shanghai's skyscrapers Shanghai World Financial Center (L), Shanghai Tower (R) and Jin Mao Tower (top) are seen at the financial district of Pudong during Earth Hour in Shanghai March 29, 2014.
  • The landmark India Gate is seen lit, top, and then the same location in darkness when the lights are turned out for one hour to mark Earth Hour, in New Delhi, India, March 29, 2014.
  • Pakistani girls hold candles during a ceremony to mark the Earth Hour 2014 campaign  in southern Pakistani port city of Karachi.
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Earth Hour sheds 'green' darkness across the country

Updated
By msnbc staff

Environmentally minded citizens around the world will turn their lights off for one hour Saturday at 8:30 p.m. local time in an attempt to raise awareness for environmental issues.

“We are showing everyone that the world’s environmental issues don’t have to overwhelm us,” organizers from the World Wildlife Fund wrote on the campaign’s website. “Small things we do every day can make a better future.”

The event will darken nonessential lights in landmarks, businesses, and cities across the country, from Niagara Falls to the Empire State Building to the Alaska Zoo.  

Are you joining in? Tell us how—and why—in the comments.