'Nanoparticles from vehicle fumes can cause acute illness': Study looks at 2021 Delhi data over two periods | Delhi News
The study analysed nanoparticles (10 to 1090 nanometers in diameter) in the city in 2021, over two periods — from April to June, and October to November. These “very small particles” may come from natural sources or from human activities.
Source: indianexpress.com