The World's Largest Human Migration

Clip: Season 24 Episode 13 | 7m 57s

Every year, 130 million migrant workers in China make their way home for New Year celebrations. In this dramatic clip from 'Last Train Home,' the Zhangs brave massive crowds of people and long lines in order to travel home and see their children.

Aired: 09/26/11

Rating: NR

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