A clip from "This Changes Everything," which connects our polluted world to the economies that caused it.
An avoidance of the number 4 adds more pressure to the city's car bans.
In this episode of Upgrade, we check out Daan Roosegaarde's air-cleaning project, which is planned for installation in Beijing.
To feed its booming economy, India is loading up on coal. Millions will die, and tens of millions will at least wind up with asthma.
If Italy is doing it, why hasn’t the rest of the world caught on?
NASA's excellent visualization shows the tangible benefit of cleaner technology.
Climate change is making air more stagnant, and putting 55 percent of the world's lungs at risk.
To contain a terrible stench, a real estate company in the Chinese city of Hangzhou covered toxic land with a giant tent.
The nanotech material could be used in posters and billboards to cut air pollution.
It's so bad, the city's instituting driving bans.