Smoke billows from an unauthorized steel factory, foreground, on November 4, 2016 in Inner Mongolia, China. To meet China’s targets to slash emissions of carbon dioxide, authorities are pushing to shut down privately owned steel, coal, and other high-polluting factories scattered across rural areas. (Photo by Kevin Frayer/Getty Images)
Kevin Frayer | Getty Images News | Getty Images
Developing nations will need more than $1 trillion each year…