Reuters: Poland and Germany aim to pave the way for a European Union deal on tackling climate change at a summit on Thursday, with proposals to break a deadlock on who should foot the bill for the effort. The measures, which sources said would help Poland and other poorer EU states bear the cost of schemes aimed at making Europe the world leader in the fight against global warming, would need backing from all 27 EU states at the two-day meeting. The summit also aims to win accord on a …