A combination picture shows a view of the Forbidden City before and after (top-bottom) Earth Hour in Beijing, 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.REUTERS/Jason Lee (CHINA – Tags: CITYSCAPE ENVIRONMENT SOCIETY IMAGES OF THE DAY)