This city of almost 300,000 people, 80 miles north of Zambia's capital of Lusaka, was identified by a 2022 U.N. report as a ...

This city of almost 300,000 people, 80 miles north of Zambia's capital of Lusaka, was identified by a 2022 U.N. report as a "sacrifice zone" — one of the most polluted places on the planet.