Air Pollution

Causes 7 million deaths/year globally; India has 21 of the world's 30 most polluted cities

Global 🌍 1952 Pollution

Key Facts

1
Major pollutants: PM2.5, PM10, NO₂, SO₂, CO, O₃ (ozone); PM2.5 most dangerous — enters bloodstream
2
India: 21 of world's 30 most polluted cities; Delhi AQI regularly exceeds 400 in winters
3
Sources in India: vehicles (40%), industry (20%), construction (10%), crop burning (Punjab/Haryana in Nov)

🌿 Did you know? The Great Smog of London (December 1952) killed 4,000 people in 4 days — Britain's worst air pollution disaster; led to the Clean Air Act 1956

Air Pollution

Key Facts

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