United Press International: A bottom-up strategy steered by local leadership can help tackle the challenges from climate change on the ground where it counts, officials said from Brussels.
"Today, the world's cities are uniting their efforts to fight climate change behind a single global organization, something that has never before happened," former New York City Mayor and U.N. Special Envoy for Climate Change Michael Bloomberg said in a statement.
On becoming a U.N. envoy after leaving office after 12 years as mayor...