AP PHOTOS: Thick smog shrouds Asian cities

Thick smog enveloped New Delhi and other cities in South and Southeast Asia, with air pollution levels reaching alarming heights due to the burning of crop residue in agricultural areas during the winter months. The combination of cooler temperatures and smoke being trapped exacerbates the situation, leading to unhealthy air quality in urban areas as the smoke drifts into cities. The region faces a significant challenge in combating air pollution, particularly during the winter season, when the impact is most severe.

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