The majority of the British public doesn't believe that climate change is caused by humans - and many others think scientists are exaggerating the problem.
Yet a report last year by more than 2,500 scientists for the UN Inter-governmental Panel on Climate Change found a 90 per cent chance that humans were the main cause of climate change. Drastic action, they said, was needed to cut greenhouse gas emissions.
'The scientific evidence for climate change is clear and it is down to human activities. It is already affecting people's lives - and the impact will be much greater if we don't act now.' So says the Department for the Environment. But what would they know?
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