Delhi's complicated air pollution problem

According to the World Health Organization, Delhi is the world's most polluted large city. And it's only going to get worse if something isn't done about it, say some experts in an article in Chemical & Engineering News (C&EN), ...

China's smoggiest city closes schools amid public anger

China's smoggiest city closed schools Wednesday as much of the country suffered its sixth day under an oppressive haze, sparking public anger about the slow response to the threat to children's health.

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