Agence France Presse: The United States warned Thursday a worsening economy could hit the funds it gives poor nations to fight global warming, as African activists appealed for major polluters to commit one percent of GDP. More than 160 countries are meeting in Bangkok to lay the groundwork for a deal on combating climate change after the landmark Kyoto Protocol’s commitments to slash greenhouse gas emissions run out in 2012. But rich and poor nations remained at loggerheads a day before the …