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.)

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  • Abhishek N. Chinnappa / Reuters

    The Flying Machines of Flugtag

    Since 1992, Red Bull has been organizing Flugtag (“flying day”) events around the world, where participants build and pilot homemade flying machines off a 28-foot-high flight deck above a body of water. The aerodynamic qualities of many of the creatively built aircraft are questionable, and most do not so much fly as... plummet.

  • Arnd Wiegmann / Reuters

    Photos of the Week: 7/18-7/24

    An embrace in a Kenyan village, Swan Upping in England, tragedy in southern Turkey, a kangaroo hopping through a frosty field in Australia, South Korea’s longest water slide ever, Hellsing cosplay in Brazil, naked tree-hugging in Berkeley, California, and much more.

  • NOAA / National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce.

    Images of the Ocean Blue: Photographs From NOAA

    The National Oceanic and Atmospheric Administration (NOAA) is an American scientific agency with roots that reach back to 1807. Over the years, NOAA has amassed a sizable library of photographs, some of which I’ve selected here.

  • Toshifumi Kitamura / AFP / Getty

    Hot Summer Days

    Images of people and animals trying to beat the heat across the Northern Hemisphere.

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