Ed Davey : We need to look at rules on transparency of fossil fuel investments
Britain's energy secretary has called for tougher rules to be applied to companies holding "risky" fossil fuel assets that could plunge in value because of global action to tackle climate change.
Ed Davey's move makes him one of the first senior politicians to weigh into a growing debate on the future of oil, gas and coal companies as governments work on sealing a global climate deal in Paris next year.
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