The mood was markedly improved on the final day of the Barcelona climate talks , as delegates, observers and non-governmental organizations all brushed off the pessimism that dominated much of this week and announced that there is still hope for a global deal at the Copenhagen COP15 sumit . News that the U.S. Senate Environment and Public Works Committee had advanced the Kerry-Boxer bill forward - coupled with revelations that some progress was made in Spain on several key issues during the ...