Using data collected from soil samples, the research team ran an extreme scenario - where kudzu covered all non-urban and non-agricultural soils in the species' range by 2050 - through a "chemical transport" model.

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It was a way to cut railroad transport out of his distribution model.

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With its asset-light, debt-free business model, the transport and logistics company is taking advantage of lower costs and prices, buying up businesses and stretching its reach to become the premier courier service linking the emerging and fast growing Asian and African economies.

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Unfortunately what they didn't do was dot the "i's" and cross the "t's" when creating and using the Department for Transport's complicated economic model for assessing franchise bids - which meant that in a judicial review of the Department's decision to go with First Group, launched by Virgin, the current holder of the franchise, the government was bound to lose.

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The original station wagons were literally that wagon bodies built on a Ford Model T chassis used to transport people and luggage from a train station.

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And heralding the City Deals scheme - in which more than 20 cities in England are steadily being given new powers over planning and transport - he suggested this could be a model of a more incremental but still radical approach to calls for a new political settlement in England.

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Birns says that as Africa's cities get more populated and as demand for business is growing, the expansion of the low-cost model should revolutionize the continent's air transport in the same way that it did in North America, Europe and now in Asia.

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