US pledges stronger climate action at Biden summit


US President Joe Biden promised on Thursday to halve his country's greenhouse gas emissions by 2030 from 2005 levels, kicking off a climate summit to pressure other polluters to bring their emissions in line with international agreements.


The US has dirtied the atmosphere with carbon dioxide more than any other economy and its citizens have some of the highest carbon footprints in the world today. Though the 50% target is not binding, it raises the US commitment to cutting emissions by about a third and could spur other governments to stop burning fossil fuels sooner.