The second week of negotiations here in Copenhagen has been marked by dramatic events, as the deadline for a new global agreement to address climate change approaches.
Blocs of negotiators from developing countries have walked out, and returned. Thousands of NGO representatives who have been denied access to the proceedings are shivering in the cold. Observers inside the Bella Center have staged sit-ins. And yet slivers of hope remain for some form of a global deal that is fair, ambitious, and binding as negotiators prepare for the arrival of more than 100 heads of state on Friday.

