The Vietnamese capital Hanoi topped the list of the world’s most polluted city on Friday, according to daily weather data.

Vietnam's capital Hanoi has been covered in thick smog over recent weeks, putting it at the top of a list of the world's most ...

When you think of the United States, perhaps things like baseball, McDonald’s, the New York Times Square, or the Grand Canyon ...

For the last three weeks of 2024, Tijuana registered poor air quality, something that is carrying into the new year, ...