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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  • AP Photo/Sakchai Lalit

    The Symmetry and Shapes of Makha Bucha at Wat Dhammakaya Temple

    Thousands of Buddhists gathered at Thailand's Wat Dhammakaya Temple on Wednesday to observe Makha Bucha, a religious holiday that marks the anniversary of Buddha's mass sermon to the first 1,250 newly ordained monks 2,558 years ago.

  • Kim Kyung-Hoon/Reuters

    Beijing's Toxic Sky

    In Beijing, awareness of the dangers of the polluted sky is now on the rise, thanks to growing data on its air quality. China will "declare war on pollution," Premier Li Keqiang told parliament in an opening address in 2014. A tougher environmental law took effect on January 1, while a new environment minister took charge on Friday.

  • Thomas Peter/Reuters

    A Visit to Aoshima, a Japanese 'Cat Island'

    Aoshima Island is one of about a dozen "cat islands" around Japan, small places where there are significantly more feline residents than people. In Aoshima more than a hundred cats prowl the island, curling up in abandoned houses or strutting about in the quiet fishing village.

  • Ilya Naymushin/Reuters

    A Winter in Siberia

    Based in Russia's Siberian city of Krasnoyarsk, the Reuters photographer Ilya Naymushin captures scenes from around the region, portraying everyday life as Russians work, play, and survive in a place infamous for its harsh winters. This collection of photos from the past winter shows some of the ways people are coping, including vehicles modified for the winter, hand-built ice-fishing huts, ice sculptures, traditional festivals, sporting events, and more.

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