Marabu has sprung up on land abandoned after the decline of Cuba's sugar industry
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Scots turn Cuban weed into 'gold'

Could the collapse of the Soviet bloc lead to more efficient electric cars and cheaper rum?

Engineers at the University of Strathclyde have found a way of turning a Cuban weed into one of the world's most sought-after substances.

Their work has paved the way for cleaner drinking water for Latin America and mobile phones that only need to be recharged every three months.