The world’s hopes for curbing climate change hinge on the action by two giant nations whose relations are deteriorating: China and the United States.
China and the United States are the world’s No. 1 and No. 2 carbon polluters, respectively, pumping out nearly half of the fossil fuel fumes that are warming the planet’s atmosphere.
The fast cuts in carbon needed to stave off the worst of climate change are all but impossible unless these countries work together and basically trust each other’s pledges.