Man-made global warming is the most important story of our age. Floods, droughts and famines are just the beginning. But some claim it doesn't even exist.
Hundreds of emails, leaked from a climate unit at the University of East Anglia last year, were probably hacked by a foreign intelligence agency, chief scientist Sir David King warns.
Climate change secretary Ed Miliband criticises China for scuppering plans for a binding commitment to reduce emissions at Copenhagen, as the government promises to continue pressing for a tougher deal.
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