Climate pledges won't be enough.

In this article the author argues that promises by China, the U.S., and Japan to cut greenhouse gas (GHG) emissions and help poorer countries deal with global warming will not be enough to help keep global warming below the politically agreed threshold of 2 °C. Comments from Niklas Hohne of the New Climate Institute, which participated in the international Climate Action Tracker project (CAT), on the best practical efforts to cut emissions around the world are presented.