The Invisible Killer: a hidden danger in the air

Autumn in India is smog season, the worst time of year for some of the world's most polluted cities. The air pollution that we breathe every day is largely invisible but it is killing us. The fact is that pollution levels in north India, Delhi and its surroundings were alarmingly high in the past month. The PM2.5 concentration was in the emergency category, it was (and remains) very bad for our health.

danger in the air
Last Updated: Sunday 18 November 2018

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