Tehran

Reuters

The Lessons We Haven't Learned From London's Killer Fog of 1952

Because of global urbanization, the number of people exposed to catastrophic levels of pollution is growing exponentially.

Reuters

Tehran's Air Pollution Is Killing Thousands

And air quality is only getting worse.

NASA

A Satellite View of City Growth, in GIFs

Watch these 11 cities boom over recent decades. From space. In animated GIFs.

Reuters

Why Tehran Shut Down Its Coffee Shops

Police shuttered 87 establishments this weekend. Perhaps gatherings of caffeinated, web-savvy young people make the government nervous?

Flickr/Sam Anvari

Why I Love My City: Azadeh Moaveni on Tehran

Despite its reputation, Iran's capital city holds secret charms