People walk past the art-work "Where the Tides ebb and flow" by Argentinian artist Pedro Marzorati installed in a pond at the Montsouris park ahead of the COP21 World Climate Summit in Paris, France, November 26, 2015. The conference of the 2015 United Nations Framework Convention on Climate Change (COP21) will start on November 30, 2015 at Le Bourget near the French capital. (Photo/Agencies)
