Harvard study finds one-third of Delhi’s PM2.5 is ammonium sulfate: What is it and how harmful is it for human health

A big new study, with researchers from Harvard and CREA, just uncovered something troubling about Delhi’s air: almost a third ...

A third of Delhi’s annual PM2.5 load is made up of secondary pollutants. This is how they are formed

Secondary aerosols formed from emissions hundreds of kilometres away can combine in the atmosphere and significantly affect ...