The countries with the worst air quality included Bangladesh and India, according to an annual report from IQAir.

The U.N. has identified Kabwe, a city of almost 300,000 people in Zambia, as one of the most polluted places on the planet.

was identified by a 2022 U.N. report as a "sacrifice zone" — one of the most polluted places on the planet. Between 1906 and 1994, Kabwe was home to Broken Hill, one of the world's largest lead ...