Air Pollution

Car Exhaust Hurts Children as Much as Second-Hand Smoke

European researchers believe 14 percent of chronic childhood asthma can be blamed on living near busy roads.

Mapping the Noxious Ozone Plumes Over Houston

A new app from Texas researchers shows how clouds of lung-pummeling ozone move through Houston neighborhoods.

Here's Exactly How Bad Beijing's Smog Crisis Is, In One Photo

China World Trade Center Tower III is more than 1,000 feet tall and can't be seen today in Beijing.

Europe's Emerging Consensus on Low-Emissions Zones

Critics of London Mayor Boris Johnson's ambitious air pollution plan may be missing the bigger picture.

Air Pollution Linked to More Severe Heart Attacks

Heart attack survivors are more likely to die over the following years if they live in an area with higher levels of pollution.

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.

Beijing Gets Aggressive on Cutting Smog, But It May Not Matter

The municipal government can only do so much without support at the national level.

A Breakdown of What Exactly Is in Beijing's Filthy Air

Climate Desk lays out the contents of China's air pollution.

NASA Satellite Image Shows Beijing Drowning in a Lake of Smog

Air pollution has been particularly bad in China this week, with levels nine times above what the U.S. considers "unsafe."

Beijing's Air Quality Catastrophe

Pollution has reached an all-time high, reminding us that China's economic growth has come at the cost of environmental disaster.

Tehran's Air Pollution Is Killing Thousands

And air quality is only getting worse.

People Trying to Reduce Air Pollution Might Be Inhaling Even More Pollution

Bicyclists and public-bus commuters in San Diego are exposing themselves to a whole lot of crap in the air, according to new research.

When Your City Is Killing You

In Several Ways to Die in Mexico City, author Kurt Hollander explores the way a city's air, food, and diseases actually affect us.

Finding of the Day: 8% of L.A. Childhood Asthma Cases Due to Freeway Proximity

Kids who live near busy roads are more likely to develop asthma.

You Can Literally Hear What Pollution Sounds Like

A team of scientists assigned tones to different air pollutants. Here are the results.

Is London's Air Up to Snuff?

How does England's air quality compare to that of past hosts, and could it affect athletes?

High-Tech Outerwear Designed to Fight Air Pollution

Behold, the ultimate in green fashion: a jacket that identifies and cleanses foul air.

China's Air Pollution Problem Explained in One Animation

These before-and-after graphics show just how severe the problem has become.

What Pittsburgh Looked Like When It Decided It Had a Pollution Problem

Photographs from the 1940s of the Steel City as it began to address its notoriously smoky air.