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As cooler air traps pollutants close to the ground, Delhis levels of PM2.5 -- particles so tiny they can enter the lungs and bloodstream -- often soar to beyond 30 times the safe limit. (Photo: AP)

Polluted Delhi air akin to death sentence, say doctors

Smog kills more than one million Indians every year and Delhi has worst air of any major city on planet, World Health...

5 Nov 2018 10:10 AM IST