Diesel cars emit more air pollution on hot days, study says https://www.theguardian.com/cities/2019/sep/10/diesel-cars-emit-more-air-pollution-on-hot-days-study-says #Greenhousegasemissions #Automotiveindustry #Climatechange #Airpollution #Environment #Technology #Worldnews #Motoring #Business #Society #Cities #France #Europe #Health