epa04684056 A combo picture of four photos showing the Acropolis hill with the floodlights switched on (top left) prior to, and switched off, during the „Earth Hour“ in Athens, Greece 28 March 2015. Earth Hour takes place worldwide at 8.30 p.m. local time and is a global call to turn off lights for 60 minutes to raise awareness of the danger of global climatic change. EPA/YANNIS KOLESIDIS
