Following the United Nations Conference on Climate Change Countermeasures "COP26" held in the United Kingdom, China, the world's largest greenhouse gas emitting country, and the United States, which follows it, announced a joint declaration on the 10th, carbon dioxide We will cooperate in efforts to reduce the emission of "methane", which is said to have a greenhouse effect more than 20 times that of the above.
The United States announced an action plan earlier this month on reducing methane emissions, but the Joint Declaration states that China "aims to develop a comprehensive and ambitious action plan."