“President Obama announced a new target to cut greenhouse gas emissions by 26-28 percent below 2005 levels by 2025. At the same time, President Xi Jinping of China announced targets to peak CO2 emissions around 2030, with the intention to try to peak early, and to increase the non-fossil fuel share of all energy to around 20 percent by 2030.”
Read more in the announcement from the The White House Office of the Press Secretary