Northern China has been experiencing some of its worst-ever air pollution. Thick smog blanketing the country from the coastal city of Tianjin down to Wuhan in the central province of Hubei has led to the closure of highways, and the cancellation of flights and outdoor activities.
According to the World Health Organization, the safe level of the smallest and most dangerous air pollution particles, known as PM2.5, is 25 micrograms per cubic meter.
Over the weekend in Beijing, concentrations peaked at well over 30 times that limit, an unprecedented 880 micrograms per cubic meter.
Dangerous levels of toxic fog covers Chinese capital as result of rapid industrial growth.
Message edited by rakshas - Tuesday, 15-January-2013, 8:24 PM