Prominent economist Jeffrey Sachs says he chose Hong Kong and Shenzhen as the final stop on an overland journey retracing the footsteps of Marco Polo because of their significant role in powering the world’s green and digital age. The Columbia University professor set off from Rome on June 13 for a 43-day, 15,000km (9,300-mile) journey, the Marco Polo Drive of Peace, Culture and Sustainable Development. The former adviser to the UN secretary general said the journey was designed to send a...
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