Combo picture of Bandeiras monument during and before Earth Hour in Sao Paulo

The Bandeiras monument is seen during (top) and before Earth Hour in Sao Paulo, in this combination picture taken March 23, 2013. Earth Hour, when everyone around the world is asked to turn off the lights for an hour from 8.30 pm local time, is meant as a show of support for tougher actions to combat climate change. REUTERS/Paulo Whitaker (BRAZIL – Tags: TRAVEL SOCIETY ENERGY ENVIRONMENT)