G8 scientists urge 50% CO2 cut by 2050

Major economies should aim to halve world emissions of carbon dioxide by 2050 and work out ways to bury greenhouse gases, according to science academies in the Group of Eight countries and the five biggest emerging nations.

 "Progress in reducing global greenhouse-gas emissions has been slow," the academies said in a statement targeting leaders at July 7-9 summits in Japan. They called on G8 leaders to honour a 2007 agreement to "consider seriously" the goal of halving world greenhouse-gas emissions by 2050.

The academies, including the US National Academy of Sciences and the Chinese Academy of Sciences, also urged work on technologies for carbon capture and storage technology.

Leaders should aim by 2009 to have "a timetable, funding and a coordinated plan for the construction of a significant number of carbon capture and storage demonstration plants", the statement said.

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