Associated Press: Brazil and France endorsed a common position on fighting global warming Saturday before next month’s U.N. climate change conference, pledging to pursue the goal of reducing emissions to 50 per cent below 1990 levels by 2050. French President Nicolas Sarkozy and his Brazilian counterpart, Luiz Inacio Lula da Silva, also urged the United States and China to get behind strong measures at the Dec. 7-18 meeting in Denmark’s capital. The Copenhagen conference is aimed at hammering …