This doctor tells people when to walk in one of the world’s most polluted cities. Watch how.
The WHO has ranked Delhi as the 11th worst city in terms of air quality. Nearly 80 people die here daily because of the bad air. Exercising outdoors can be hazardous. Nitish Dogra, a physician and Fulbright/Johns Hopkins alum wants to change that. He sends out air quality alerts from a low-cost monitor in his balcony to a Whatsapp group of neighbours -- so they can decide whether to walk or not.
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