The Happy City Index ranks 200 cities across 82 metrics that add up to a global happiness quotient—these cities made the cut.

Before the EPA, the US environment was not federally protected. Vintage photos show Los Angeles before regulations limited ...

In 1943, smog covered the city so thickly that residents thought ... and the 72nd worst city for air quality in the world. In fact, multiple cities in California continue to rank among the worst for ...

One of America’s most unique ecological landmarks is disappearing. The Great Salt Lake, once the largest saline lake in the ...

It’s easy to dismiss Dhaka as an unliveable city. The challenge is to replace that tantrum with the determination to make the city better.

"Since you can't have those things mostly now because of the haze, I have rebranded it with history and culture as there are ...

Ludhiana: As Ludhiana earns the dubious distinction of being among the most polluted cities in the world, air quality ... and persistence of Ludhiana's air pollution crisis. In contrast, Amritsar ...