Le Bourget, Paris, France. 29th November, 2015. A sign to the COP21 conference center in the suburban train RER B. Credit: David Bertho/Alamy Live News

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Photo credit: © David BERTHO / Alamy / Afripics
License: Licensed
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Keywords: bourget, change, climate, conference, cop21, nations, paris, rer, sign, unfccc, united