U.S. seeks to lead by example during global climate summit
Clip: 04/22/2021 | 2m 15s | Video has closed captioning.
The United States set ambitious new goals today to stop the world from heating up, urging other nations to follow suit. And some of the world’s largest carbon emitters seemed to heed the call. But world leaders left open how they would get there as they met in a virtual gathering. William Brangham has our report.
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