President Joe Biden announced the United States and European Union have launched a global pledge to reduce emissions of methane -- a potent greenhouse gas -- by nearly 30% by the end of the decade.
원문출처 : https://www.cnn.com/2021/09/15/world/us-eu-methane-pledge-climate/index.html
원문출처 : https://www.cnn.com/2021/09/15/world/us-eu-methane-pledge-climate/index.html