El mundo entero una Hora de apagón por el Planeta
A view of the Sydney city skyline on March 23, 2011 four days before Earth Hour. 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. Picture taken 23 March, 2011. REUTERS/Tim Wimborne (AUSTRALIA - Tags: ENVIRONMENT ENERGY SOCIETY CITYSCAPE)
A view of the Sydney city skyline during Earth Hour March 26, 2011. 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. REUTERS/Tim Wimborne (AUSTRALIA - Tags: ENVIRONMENT ENERGY SOCIETY CITYSCAPE)