Matt McGrath
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The IPCC report - why it matters

The Intergovernmental Panel on Climate Change is about to produce its final summary of the current state of global warming.

The Synthesis Report will outline the causes, impacts and possible solutions to the problem.

Delegates have been meeting in Copenhagen to clarify the wording of the text and it's likely to be a key building block of a new global treaty to limit emissions of carbon dioxide.

Matt McGrath reports.

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