Beer can be turned into fuel and used as a sustainable replacement for petrol
Could we soon be buying a few pints for our cars? (Picture: PA)

Beer can be turned into fuel and could become a sustainable alternative to petrol, scientists have found.

Chemists at the University of Bristol have spent years developing technology to convert widely-available ethanol into butanol.

Butanol is a better fuel alternative to the widely-used ethanol, which has a lower energy density and can be

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