Photo from fOTOGLIF
The Buenos Aires' Obelisk is seen during Earth Hour March 27, 2010. 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. The symbolic one-hour switch-off, first held in Sydney in 2007, has become an annual global event and organizers World Wide Fund for Nature (WWF) said they expect this year's to be the biggest so far.
