An lighted panel is seen in front of the UNESCO World Heritage Cologne Cathedral and the Hohenzollern railway bridge along the river Rhine before Earth Hour March 29, 2014. Lights go off around the world at 8.30pm local time in a show of support for renewable energy during Earth Hour, an event organised since 2007 to promote a sustainable future for the planet. The words read, "out of coal". REUTERS/Ina Fassbender (GERMANY - Tags: ENVIRONMENT TRAVEL SOCIETY ENERGY)
AA107. Fribourg (Switzerland Schweiz Suisse), 29/03/2014.- A composite image of the Cathedral of St. Nicholas in Fribourg, Cathedrale Saint-Nicolas de Fribourg, with the lights turned on to mark the annual Earth Hour in Fribourg, Switzerland, 29 March 2014. Earth Hour takes place worldwide at 8:30 p.m. local time and is a global call to turn off lights for 60 minutes in a bid to highlight the global climate change. EFE/EPA/ANTHONY ANEX
AA107. Fribourg (Switzerland Schweiz Suisse), 29/03/2014.- A composite image of the Cathedral of St. Nicholas in Fribourg, Cathedrale Saint-Nicolas de Fribourg, with the lights turned off to mark the annual Earth Hour in Fribourg, Switzerland, 29 March 2014. Earth Hour takes place worldwide at 8:30 p.m. local time and is a global call to turn off lights for 60 minutes in a bid to highlight the global climate change. EFE/EPA/ANTHONY ANEX