In times of widely publicized environmental issues, namely global warming, the transportation sector is often bemoaned for its contribution to carbon emissions. Though diesel exhaust certainly exhibits detrimental effects on the atmosphere, its effects on the human body attract less attention. The World Health Organization estimates that urban air pollution, to which vehicles are a significant contributor, kills 1.2 million people every year. On Sept. 9, Prof. Oliver Gao, civil and environmental engineering, who focuses on the nexus of transportation, air quality and energy, discussed his ongoing research on the effect of different fuels on air quality measurements.
