What do Houston, Los Angeles, New York and Chicago have in common? The answer is dense population, high traffic volume and air quality that fails to meet ozone standards set by the U.S. Environmental Protection Agency. Those circumstances made each city a prime candidate for a University of Houston study assessing the impact of vehicle electrification on air quality and public health. Titled "Air quality and health co-benefits of vehicle electrification and emission controls in the most populated United States urban hubs: insights from New York, Los Angeles, Chicago and Houston," the study looked at changes in air pollution, specifically PM2.5 and ozone levels in these major U.S. cities under different electrification scenarios. The work was published in the journal Science of the Total Environment. .....