The two-week United Nations conference on climate change is halfway over, and no matter what else happens, it has already been a clear-cut success in two critical areas.
As important as a global accord is, the most influential actors on climate change have been cities and businesses, and leaders in both groups made it clear that they will not wait for an agreement that, if it comes together, won’t even take full effect until 2020.
Mayors and officials representing more than 500 cities organized and attended their own summit in Paris (which Paris Mayor Anne Hidalgo and I co-hosted). It was the first time local leaders had ever gathered in such numbers during a UN climate-change conference. NewsDay