Green costs of driving

The smog shrouding Chinese cities this winter seems of little concern to drivers, who continue clogging the roads and spewing out fumes as they idle in traffic jams.

But this carefree disregard of the pollution they cause, which is a significant contributor of the harmful particles in the smog, will have to change if we are to breath clean air again.

Environmental studies show that the poor air quality, acid rains and smog that blight Chinese cities, and which are harmful to health, are all related to automobile exhaust emissions.