By Helen Trouten Torres, Contributing Reporter

RIO DE JANEIRO, BRAZIL - Petrobras, the world leader in sub-salt oil extraction which is 54 percent directly owned by the Brazilian government, is expanding its borders at sea with the deployment of self-sustaining platforms located far offshore which have been dubbed ‘floating cities.’ After discovering stocks in the Atlantic that may make Brazil one of the world’s largest exporters of oil, the company plans to build dozens of new platforms over the coming . . .

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