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An unprecedented international scientific effort is underway to understand the effects of man’s activities on global climate, in preparation for the world climate conference in November. The UK is playing an important role through the Inter-Governmental Panel on Climate Change (IPCC) which is assessing relevant scientific knowledge, possible impacts of climate change, and response strategies.

This POSTnote summarises current knowledge on global warming, and examines some remaining uncertainties which are relevant to decision-makers.

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