Senior White House official confirms Obama could still attend crucial climate summit
Leaders sign communiqué signalling they are prepared to table emission targets at Copenhagen Summit
Brown still hopes to salvage climate talks as US rules out binding targets
Official: "We should try to complete the job earlier than later"
Crucial series of bi-lateral talks between world's three largest emitters gets underway as Obama says he could attend Copenhagen
Senator reckons draft US climate bill commanding bi-partisan support could be ready before UN summit
Senate delay means no bill likely before Copenhagen
As EU negotiators call on the US to end Copenhagen deadlock, German Chancellor prepares to tell Congress it must do more to tackle climate change
Seven members of Environment and Public Works Committee say they will not show up to this week's key climate bill meetings
Move met with opposition from Baucus and Inhofe