A risky climate

Climate change

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Political rhetoric espousing a desire to tackle the thorny issue of climate change is gaining increasing fervour. First came the release at the start of this year of a film, An Inconvenient Truth, that explains why former US vice-president Al Gore - who has made global warming something of a personal crusade since controversially losing out in the 2000 presidential election - believes there is incontrovertible scientific evidence that climate change is a real scientific phenomenon.

Then, in l

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