In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
In Pictures: Weather extremes 2013
Photos of the Day: Photos of the day 05/15
In Pictures: Duchess Kate's royal baby bump
Photos of the Day: Photos of the day 05/14
In Pictures: Keffiyeh is rebel chic
People place LED lights to form a 'No CO2' slogan in support of global efforts to reduce greenhouse gases during the Earth Hour Saturday, in Taipei, Taiwan. More than 20 high-rise buildings in Taiwan's capital dimmed their lights for an hour in a gesture against global warming. Chiang Ying-ying/AP
A combination of pictures shows lights switched on in Hong Kong's financial district before (top) and during Earth Hour (bottom) on Saturday. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Bobby Yip/Reuters
These two photos show Malaysia's landmark Petronas Twin Towers before and after turning off its lights to mark Earth Hour in Kuala Lumpur, Malaysia, Saturday. Lai Seng Sin/AP
People sit by candle light in a park in Singapore's financial district during Earth Hour on Saturday. Earth Hour, when everyone around the world is asked to turn off their lights for an hour at 8:30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Pablo Sanchez/Reuters
Models walk the catwalk in the dark during Earth Hour for China Fashion Week in Beijing, Saturday. The words on top right read 'love the planet, shut down power for one minute.' Andy Wong/AP
The National Stadium, also known as the 'Bird's Nest', during Earth Hour in Beijing on Saturday. Homes, office towers and landmarks in cities around the world will turn off their lights from 8:30 pm local time for one hour to raise awareness about climate change and the threat from rising greenhouse gas emissions. Grace Liang/Reuters
The National Aquatics Center for the 2008 Beijing Olympics, also known as the 'Water Cube', during Earth Hour on Saturday. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Grace Liang/Reuters
Beijing's National Grand Theater during Earth Hour, Saturday. Earth Hour, when everyone around the world is asked to turn off their lights for an hour at 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Christina Hu/Reuters
A view of the Forbidden City during Earth Hour in Beijing, Saturday. Earth Hour, when everyone around the world is asked to turn off their lights for an hour at 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Jason Lee/Reuters
The Bund on the banks of the Huangpu River during Earth Hour in Shanghai, Saturday. Earth Hour, when everyone around the world is asked to turn off their lights for an hour at 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Aly Song/Reuters
A combination picture shows the Welcome Statue fountain before and during Earth Hour in Jakarta Saturday. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Supri/Reuters
The Lotus temple is seen in darkness as the lights are turned out in an hour-long gesture to be repeated by millions of people around the world who are calling for a binding pact to cut greenhouse gas emissions, in New Delhi, India, Saturday. Buildings in some 4,000 cities in more than 120 countries are expected to unplug to reduce energy consumption and draw attention to the dangers of climate change, with participants turning off the lights when the clock strikes 8:30 p.m. local time. Manish Swarup/AP
The hill of the Acropolis and the Herodion theater during Earth Hour in Athens on Saturday. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Yiorgos Karahalis/Reuters
A view of the historic Trevi fountain with all illuminations switched off, in Rome, Saturday. Many millions of people worldwide turned off their lights and electrical appliances for one hour Saturday night, in a mass gesture to highlight environmental concerns and to call for a binding pact to cut greenhouse gas emissions. Angelo Carconi/AP
Activists from the World Wildlife Fund (WWF) gather in front of the Brandenburg Gate during Earth Hour in Berlin, Saturday. Fabrizio Bensch/Reuters
A combination of pictures shows the Cathedral before (l.) and during Earth Hour in Lausanne, Switzerland, on Saturday. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Denis Balibouse/Reuters
Candle lights are seen in the foreground as the Eiffel Tower is shown just after the 20,000 bulbs illuminating the tower went out, Saturday. Many millions of people worldwide turned off their lights and electrical appliances for one hour Saturday night, in a mass gesture to highlight environmental concerns and to call for a binding pact to cut greenhouse gas emissions. Thibault Camus/AP
People hold candles as the lights go out on Parliament Hill in Ottawa, Canada on Saturday, to celebrate Earth Hour. Ashley Fraser/The Canadian Press/AP
The Las Vegas Strip during Earth Hour on Saturday. Earth Hour, when everyone around the world is asked to turn off their lights for an hour at 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. Richard Brian/Reuters
In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
In Pictures: Weather extremes 2013
Photos of the Day: Photos of the day 05/15
In Pictures: Duchess Kate's royal baby bump
Photos of the Day: Photos of the day 05/14
In Pictures: Keffiyeh is rebel chic
Saudi woman scales Everest with group of 64 climbers Saturday. Raha Moharrak, a 25-year old graphic designer, is the first Saudi woman to have reached the summit of Mount Everest.
Mountaineering officials say 64 climbers, including a Saudi Arabian woman, have successfully scaled Mount Everest from Nepal's side of the mountain.
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