epa02094984 A composite picture shows Malaysia’s landmark, the Petronas Twin Towers (R) and the Kuala Lumpur Tower (L) along with other buildings before and after the lights were switched off to mark Earth Hour in Kuala Lumpur, Malaysia, 27 March 2010. Earth Hour is a campaign to encourage businesses, communities and individuals to take the simple steps needed to cut their emissions. EPA/SHAMSHAHRIN SHAMSUDIN