Biden to announce US will aim to cut carbon emissions by as much as 52% by 2030 at virtual climate summit

President Joe Biden on Thursday will kick off a climate summit attended by 40 other world leaders by announcing an ambitious cut in greenhouse gas emissions as he looks to put the US back at the center of the global effort to address the climate crisis and curb carbon emissions.President Joe Biden on Thursday will kick off a climate summit attended by 40 other world leaders by announcing an ambitious cut in greenhouse gas emissions as he looks to put the US back at the center of the global effort to address the climate crisis and curb carbon emissions.