Page last updated at 12:20 GMT, Friday, 30 October 2009

Is a global climate treaty an impossible dream?

In December, delegations from 192 countries will hold two weeks of talks in Copenhagen aimed at establishing a new global treaty on climate change, which scientists say is vital if the planet is to be saved from irreversible damage.

With six weeks to go, our Science Editor Susan Watts has been in the Danish capital to gauge the mood and talk to some of the key players who will be shaping the agenda.

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