Mayors pose after eleven cities were honoured at the C40 Cities Awards ceremony during the C40 Mayors...
Michael Bloomberg, the U.N. Special Envoy for Cities and Climate Change (L), Paris Mayor Anne Hidalgo (2nd L), Sydney Lord Mayor Clover Moore (2nd R), Rio de Janeiro mayor Eduardo Paes (R) and other mayors pose after eleven cities were honoured at the C40 Cities Awards ceremony during the C40 Mayors Summit in Mexico City, Mexico, December 1, 2016. REUTERS/Henry Romero