Rio de Janeiro mayor Eduardo Paes receives a bonsai tree from Michael Bloomberg, the U.N. Secretary General's...
Rio de Janeiro mayor Eduardo Paes (C), receives a bonsai tree from Michael Bloomberg, the U.N. Secretary General's Special Envoy for Cities and Climate Change (R) while Paris Mayor Anne Hidalgo applauds at the C40 Mayors Summit at a hotel in Mexico City, Mexico December 1, 2016. REUTERS/Henry Romero