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BERLIN, GERMANY - MARCH 24: An activist in a World Wildlife Fund (WWF) panda bear costume looks at the crime scene body outline of an extinct animal in front of the Brandenburg Gate during Earth Hour 2018 on March 24, 2018 in Berlin, Germany. According to organizers, Earth Hour has participants including individuals, companies and landmarks in 154 countries and territories and over 5,000 cities agreeing to switch off their lights for one hour. The Brandenburg Gate, the Eiffel Tower in Paris, Big Ben Clock Tower in London, the Christ the Redeemer statue in Rio de Janeiro, the Giza Pyramids, Rome's Colisseum, Athen's Acropolis, the Burj Khalifa tower in Dubai, and the Empire State Building in New York are among the monuments whose operators have agreed to participate in the demonstration. (Photo by Adam Berry/Getty Images)