India has six of the world's 10 most polluted cities, report shows
Chad, in central Africa, is the world’s most polluted country, while California has the worst air pollution in North America, ...
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Six of the world's 10 most polluted cities are in one country, report shows
HONG KONG — Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a new report shows. New Delhi was the most polluted capital ...