A motorist prepares to pump gas Thursday, April 22, 2021, in Portland, Maine. President Joe Biden committed the United States to cutting emissions by up to 52% by 2030 at a virtual Earth Day summit. (AP Photo/Robert F. Bukaty)
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A motorist prepares to pump gas Thursday, April 22, 2021, in Portland, Maine. President Joe Biden committed the United States to cutting emissions by up to 52% by 2030 at a virtual Earth Day summit. (AP Photo/Robert F. Bukaty)