Ulaanbaatar is the world’s coldest capital. Nighttime temperatures in winter can dip below minus 30 Celsius (-22 Fahrenheit). On the coldest days, particulate matter-2.5 (PM-2.5) air pollution ...

Mongolia's capital Ulaanbaatar suffers from severe air pollution. New designs use sunlight to ensure warm, smoke-free homes. We explore the technology and its challenges. On winter mornings ...

“You’re going back to Mongolia in winter? Aren’t temperatures -35 F and isn’t Ulaanbaatar the coldest capital in the world?” They were sentences I heard not just from one ...