China's smog taints economy, health
Saturday, January 26, 2013 - 08:30
in Mathematics & Economics
Factories, flights, highways and hospitals are affected by pervasive pollution. The country is home to seven of the world's 10 dirtiest cities.BEIJING — When a thick quilt of smog enveloped swaths of China earlier this month, it set in motion a costly chain reaction for the world's No. 2 economy.