Mexico City tells residents to park it

Apr 19, 2016
After a pollution emergency, Mexico's capital city is taking drastic measures.
View of Mexico City blanketed by smog on March 18, 2016. Mexican officials lifted a four-day air pollution alert last month in the nation's densely-populated capital after ozone levels dropped, according to them, to acceptable levels. 
RONALDO SCHEMIDT/AFP/Getty Images

Delhi: The most air-polluted place on earth

Dec 29, 2015
A look at what it's like to live in the Indian capital.

What if it's not just Volkswagen?

Sep 24, 2015
In countries where diesels are popular, the extra ozone pollution could add up.

An environmental movement is awakening in China

Mar 16, 2015
Is China having its 'Silent Spring' moment?

India's air pollution problem

Jan 23, 2015
Cities in India have air that's four times deadlier than Beijing's.

Oil companies and environmental non-profits team up

Sep 23, 2014
A partnership to cut emissions of methane—a potent greenhouse gas—in drilling.

Acid rain: what it takes to stop pollution

Jul 17, 2014
"You could sing in the rain, walk in the rain, and then the rain was acid..."

For public good, not for profit.

China's fight for cleaner air

Jul 15, 2014
“China’s growth model is based on the idea that natural resources are free."

In China, the polluter 'that-must-not-be-named'

Jul 15, 2014
China's crackdown on criticism of a $6 billion petrochemical plant.

LA Smog: the battle against air pollution

Jul 14, 2014
How can the Chinese live with terrible air pollution? One answer: Americans did.