This combination image of two photographs shows the landmark Taipei 101 building before (L) and after (R) its lights were turned off in observation of Earth Hour in Taipei on March 29, 2014. Lights will go out in some 7,000 cities and towns from New York to New Zealand for Earth Hour which this year aims to raise hundreds of thousands of dollars for green projects. AFP PHOTO / Sam Yeh
The National Stadium, also known as the "Bird's Nest", is seen reflected in a lake before Earth Hour at the Olympic Park in Beijing, March 29, 2014. Lights go off around the world in a show of support for renewable energy during Earth Hour, an event organised since 2007 to promote a sustainable future for the planet.
The National Stadium, also known as the "Bird's Nest", is seen reflected in a lake before Earth Hour at the Olympic Park in Beijing, March 29, 2014. Lights go off around the world in a show of support for renewable energy during Earth Hour, an event organised since 2007 to promote a sustainable future for the planet. REUTERS/Kim Kyung-Hoon (CHINA - Tags: ENVIRONMENT SOCIETY SPORT)
El Estadio Nacional, también conocido como el "Nido de Pájaro", se ve reflejado en un lago durante la 'Hora del Planeta' en el Parque Olímpico en Beijing.