© REUTERS/Adnan AbidiA man rides his bicycle in front of the India Gate shrouded in smog in New Delhi, India, December 26, 2018.
Pollution levels spiked last week in New Delhi, India's teeming capital of more than 20 million people, climbing to nearly 12 times the recommended level and exacerbating a public health crisis.
Senior government officials said the main reasons for the surge in the amount of toxic smog trapped over New Delhi were unusually cold air, including fog, and slow wind speeds.
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here for an interactive Reuters graphic on the link between Delhi's pollution and falling temperatures and wind speeds.
The World Health Organization said this year India was home to the world's 14 most polluted cities. New Delhi was ranked the sixth most polluted.
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