The chief US climate negotiator, Todd Stern, said he would press Beijing for specific emission reduction targets under the next global warming treaty when he travels to China on Saturday, AFP reported. Stern said any future agreement, which would come into effect after 2012 when the Kyoto Protocol expires, must include strong action by China. According to Stern, China emits six times more carbon for every unit of GDP growth than Europe or Japan and four times more than the US. By way of counter-argument, Beijing frequently notes that its carbon emissions are far lower on a per capita basis than many Western countries. Stern said he would "listen not lecture" while in Beijing as the US also needs to get "its own house in order."