FlorCruz : On bad days in Beijing , seeing , hearing is difficult . Rapid industrialization , explosive emissions in cars contribute to China 's air pollution . State - run media name China 's lead city as emitter of greenhouse gases . Health is the big issue .
FlorCruz : On bad days in Beijing , seeing , breathing is difficult . Rapid industrialization , explosive growth in cars contribute to China 's air pollution . State-run media acknowledge China 's lead status as emitter of greenhouse gases . Health is the big casualty .