Berlin, Germany. 29th Mar, 2014. Bus services and cars pass by the unlit office highrise offices of the Deutsche Bahn (DB) during the so called 'Earth Hour' event at Potsdamer Platz in Berlin, Germany, 29 March 2014. 'Earth Hour' is a worldwide event which aims to set a sign for environmental protection and to draw attention to environmental awareness. Photo: Henning Kaiser/dpa/Alamy Live News - Stock Image
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