U.S. joins an effort to mobilize `` fast-start '' funding for developing counties . Talks intended to agree a global limits on carbon emissions to replace U.S. . U.S. President Gibbs is expected to join the talks 2020 . U.S. , the U.N. Industrial Development Organization pledge more than $ 20 billion in climate aid to developing nations .
U.S. joins an effort to mobilize `` fast-start '' funding for developing counties . Talks intended to agree a global limits on carbon emissions to replace Kyoto . U.S. President Barack Obama is expected to join the talks Friday . Japan , EU pledge more than $ 20 billion in climate aid to developing nations .