HANYUAN, CHINA - NOVEMBER 17: Schoolboys walk to their school in the village of Gulucan on November 17, 2008 in Hanyuan county, Sichuan province, China. More than 60 farmers' families live in six isolated locations, perched high above a spectacular canyon in the area. Some farmers' children have to walk three hours to their school along the edge of a crumbling, narrow mountain path with a sheer 5,000ft drop on one side.  (Photo by Guang Niu/Getty Images)