Earth Hour 2011

Last Saturday, March 26, people and businesses around the world participated in Earth Hour 2011, 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. This year, participants in 134 countries darkened homes, skyscrapers, and landmarks around the world. 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 at right.)

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

Most Recent

  • Vadim Ghirda / AP

    Photos of the Week: Water Festival, Candy Candidate, Uruguayan Gaucho

    Fashion in Pakistan, Ivanka Trump in Ethiopia, Holy Week celebrations in Spain, an aircraft with the world’s longest wingspan, Notre-Dame cathedral ablaze in Paris, spring skiing in Siberia, and much more

  • Wang Zhao / AFP / Getty

    Mars in the Gobi Desert

    Photographers were on hand as some of the first student groups arrived to tour this vision of Mars in China’s Gobi Desert.

  • Ludovic Marin / AFP / Getty

    After the Fire: Photos From Inside Notre-Dame Cathedral

    Investigators and photographers were able to get a first look at the damaged interior.

  • Francois Guillot / AFP / Getty

    Photos: The Devastation of Notre-Dame Cathedral

    A massive fire burned through the roof of one of Europe’s most visited historic landmarks today.