Residents walk down a road that leads to

Residents walk down a road that leads to the county's power plant in Zhangjiakou, northeast China's Hebei province, 19 June 2005. A top Chinese environmental official has questioned whether China should embrace being the "world's factory" and called for a "green rise" to prevent ecological disaster, as the country "has paid a high environmental price" for 20 years of rapid economic development. With the economy expected to quadruple by 2020, China faces an "environmental crisis" coupled with social problems. AFP PHOTO (Photo credit should read STR/AFP via Getty Images)