Stock Photo - 01 January 2021, Brandenburg, Potsdam: Visitors stand behind a waterfall among plants in the tropical hall ""Biosphäre Potsdam"". With a symbolic animal count, the employees of the Tropical World have brought the past months to a close. There are now several thousand animals of 150 species to be seen in the biosphere - including not only birds, butterflies and monkeys, but also insects, fish, corals and annemones. To save energy, the temperature in the hall was lowered from 28 degrees to 24 degrees Celsius. Photo: Soeren Stache/dpa. - Potsdam/Brandenburg/Germany

Stock Photo: 01 January 2021, Brandenburg, Potsdam: Visitors stand behind a waterfall among plants in the tropical hall ""Biosphäre Potsdam"".

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