The largest and most important UN climate change conference in history opened Monday, with organizers warning diplomats from 192 nations that this could be the best, last chance for a deal to protect the world from calamitous global warming.
The two-week conference, the climax of two years of contentious negotiations, convened in an upbeat mood after a series of promises by rich and emerging economies to curb their greenhouse gases. However, major issues yet to be resolved.
Conference president Connie Hedegaard said the key to an agreement is finding a way to raise and channel public and private financing to poor countries for years to come to help them fight the effects of climate change.
Hedegaard - Denmark's former climate minister - said if governments miss their chance at the Copenhagen summit, a better opportunity may never come.