Backgrounder   :::::: Backgrounder: Major topics of G20 Pittsburgh Summit ( 2009-09-25 ) :::::: Backgrounder: Chronology of events since financial crisis began ( 2009-09-25 ) :::::: Backgrounder: Pittsburgh -- Legend from America's Steel Capital to Green City ( 2009-09-24 ) :::::: Backgrounder: Evolution of global financial system ( 2009-09-24 ) :::::: Backgrounder: Major achievements of two G20 summits ( 2009-09-24 ) :::::: Backgrounder: Major parties' stances on climate talks ( 2009-09-21 ) :::::: Backgrounder: UN General Assembly ( 2009-09-16 ) :::::: What is the G20 ( 2009-09-21 ) :::::: Facts and figures about Chinese president's G20 tour ( 2009-09-21 ) :::::: Facts and figures about Chinese president's G20 tour ( 2009-09-21 ) :::::: Highlights of Chinese president's G20 tour ( 2009-09-21 )