Page last updated at 09:59 GMT, Wednesday, 26 August 2009 10:59 UK

Perfect Storm: Can Britain change?

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The government's chief scientist says that failure is not an option at the world climate change conference in Copenhagen.

John Beddington raised the possibility of a "perfect storm" of food, energy and water shortages as soon as 2030.

The BBC's Home Editor, Mark Easton, considers what members of the public can do to help avert a crisis.

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