90% of people breathe polluted air; New Delhi is world's most polluted big city

90% of people breathe polluted air; New Delhi is world's most polluted big city
- Nine out of 10 people around the world breathe polluted air, according to a report released Wednesday by the World Health Organization (WHO). An "alarming" 7 ... China, for example, is taking serious strides to clean up its air, and the WHO said India should follow China's example. This is the WHO's ...

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