Xinhua: African Union (AU) Commission Chairperson Jean Ping declared on Sunday in Ouagadougou that African countries had decided to adopt a common position and to speak in one voice during the UN climate summit scheduled for December in Copenhagen. Jean Ping made this declaration during the 7th world forum on sustainable development, held as from Oct. 9 to 11 in Ouagadougou under the theme “Climate Change: challenges and opportunities for sustainable development.” While insisting that …