CHIANG MAI, Thailand -- The Doi Suthep hilltop, which overlooks the ancient city of Chiang Mai, is a popular tourist destination. But magnificent views have been increasingly elusive to those who endure the hike as heavy air pollution turns the skies hazy.
Travel & Leisure
Thailand's tourism future darkened by air pollution
Visitors may choose countries with 'cleaner air' instead, industry chief warns
The sky looks grey in the popular tourist destination of Chiang Mai due to severe air pollution. (Photo by Yohei Muramatsu)
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