He said production has fallen "drastically, " to less than 400, 000 barrels a day from 1.7 million, while gas exports to Italy have completely halted.

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"If it were less car-oriented, the energy consumed would be drastically reduced, " he says.

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But research published in the Proceedings of the National Academy of Sciences could drastically alter those assumptions by bringing another no-less-ominous factor to the table: biology.

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