The United States and China have announced a joint agreement in addressing methane and plastic pollution ahead of the Asia-Pacific Economic Cooperation (APEC) summit. How it happened: The agreement was reached during a meeting between climate envoys John Kerry and Xie Zhenhua from Nov. 4-7 in Sunnylands, California. Reviving a bilateral climate working group, they agreed to cooperate and focus on areas such as reducing methane emissions, enhancing efficiency, promoting the circular economy and exchanging information on emission reduction policies and technologies.