Earth Hour 2013

Last Saturday, March 23, iconic landmarks and skylines were plunged into darkness as people and businesses around the world participated in Earth Hour 2013, turning off their lights at 8:30 p.m. local time. Earth Hour was organized by the World Wildlife Fund in 2007 as a way to bring attention to energy consumption, sustainability, and climate change issues. More than 150 countries took part in last year's event, and the movement has spread even further, with Palestine, Tunisia, Suriname, and Rwanda among a host of newcomers pledging to take part this year. The images below (starting with photo number two) are interactive -- click on each image to "turn off the lights." (For wider screens, be sure to click the 1280px option below.)

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Most Recent

  • Sergey Gorshkov / bioGraphic

    Studying the Arctic Wildlife of Russia's Wrangel Island

    High in the Russian Far East lies Wrangel Island, a harsh landscape that supports a surprisingly diverse ecosystem.

  • Gianluigi Guercia / AFP / Getty

    The Opening of 'The World’s Most Useless Airport' in Remote Saint Helena

    Last weekend, the tiny and isolated British island of Saint Helena welcomed its first scheduled commercial flight from South Africa.

  • Bettmann / Getty

    40 Years Ago: A Look Back at 1977

    Four decades ago Jimmy Carter was sworn in as the 39th president of the U.S., the original Star Wars movie was released in theaters, and much more.

  • Jae C. Hong / AP

    Deadly Wildfires Continue Across Northern California

    More than a dozen wildfires burning across Northern California have destroyed at least 5,700 structures and are being blamed for 40 deaths.

Join the Discussion