Contributions of IIT Bombay researcher to the field that won the 2023 Nobel Prize in Physics


New Delhi
16 Feb 2018

According to the World Health Organization, the safe limit of PM2.5 concentration for humans is 25 micrograms/cubic metre. But, the fact that at any given time, the  PM2.5 levels in Delhi hover between 303.9 and 408.2 -- way above the safe level -- is no news! Newspaper headlines scream on toxic pollution levels and people wearing protective masks has become a common sight.