China on Wednesday opened the world's longest high-speed rail line that more than halves the time required to travel from the country's capital in the north to Guangzhou, an economic hub in southern ... more 
China on Wednesday opened the world's longest high-speed rail line that more than halves the time required to travel from the country's capital in the north to Guangzhou, an economic hub in southern China. (Dec. 26) less 
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Wed, Dec 26, 2012 1:26 PM EST