Under the new system, software will analyze the entire Norfolk network every hour and, to keep traffic flowing efficiently, suggest changes in speed, routing and train meeting places.

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Nadav Kander's images of China's Yangtze River depict communities adjusting to the changes caused by the re-routing of the country's largest river.

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Exchanges have spent the last year designing order-routing algorithms and buying faster networking gear and more bandwidth to control the chaos brought on by the changes.

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