Scientists, including those from the University of Surrey in the UK, assessed the levels of harmful fine particulate matter (PM2.5) from vehicles and other sources in five Indian cities — Delhi, Mumbai, Kolkata, Chennai and Hyderabad
Scientists, including those from the University of Surrey in the UK, assessed the levels of harmful fine particulate matter (PM2.5) from vehicles and other sources in five Indian cities — Delhi, Mumbai, Kolkata, Chennai and Hyderabad