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air pollution

New Climate-Friendlier Coolant Has a Catch: It’s Flammable

New Climate-Friendlier Coolant Has a Catch: It’s Flammable

Tubes used for testing at Honeywell’s lab in Buffalo.
Sinosphere: When China Wants Better Air Readings, Cotton Does the Trick

Sinosphere: When China Wants Better Air Readings, Cotton Does the Trick

Heavy smog engulfing the northern Chinese city of Xi’an in 2013.
Sinosphere: When China Wants Better Air Readings, Cotton Does the Trick

Sinosphere: When China Wants Better Air Readings, Cotton Does the Trick

Heavy smog engulfing the northern Chinese city of Xi’an in 2013.
300 Million Children Breathe Highly Toxic Air, Unicef Reports

300 Million Children Breathe Highly Toxic Air, Unicef Reports

A child wearing a face mask in New Delhi last year.
Farmers’ Unchecked Crop Burning Fuels India’s Air Pollution

Farmers’ Unchecked Crop Burning Fuels India’s Air Pollution

A farmer burned a harvested wheat field last month on the outskirts of Jalandhar, India.
Farmers’ Unchecked Crop Burning Fuels India’s Air Pollution

Farmers’ Unchecked Crop Burning Fuels India’s Air Pollution

A farmer burned a harvested wheat field last month on the outskirts of Jalandhar, India.
Pollution Accord Is Set for Global Flights, but Tasks Remain

Pollution Accord Is Set for Global Flights, but Tasks Remain

ICAO President Olumuyiwa Benard Aliu, center, at the opening of the October Montreal conference, where an accord was set to limit greenhouse gas emissions from international flights.
The Paris Agreement on Climate Change Is Official. Now What?

The Paris Agreement on Climate Change Is Official. Now What?

A glacier at the base of Mount Gongga in Sichuan Province in China. Glaciers like this are especially susceptible to the effects of rising temperatures and climate change.
Delhi Closes Over 1,800 Schools in Response to Dangerous Smog

Delhi Closes Over 1,800 Schools in Response to Dangerous Smog

Boys played soccer in a park on a smoggy morning in New Delhi on Wednesday.
How Is Your Family Coping With Delhi’s Air Pollution?

How Is Your Family Coping With Delhi’s Air Pollution?

Burning paddies, like this one Thursday on a farm in the Indian state of Punjab, contributes to the poor air quality in New Delhi, the capital.
How Is Your Family Coping With Delhi’s Air Pollution?

How Is Your Family Coping With Delhi’s Air Pollution?

Burning paddies, like this one Thursday on a farm in the Indian state of Punjab, contributes to the poor air quality in New Delhi, the capital.
Delhi Closes Over 1,800 Schools in Response to Dangerous Smog

Delhi Closes Over 1,800 Schools in Response to Dangerous Smog

Boys played soccer in a park on a smoggy morning in New Delhi on Wednesday.
How Is Your Family Coping With Delhi’s Air Pollution?

How Is Your Family Coping With Delhi’s Air Pollution?

Burning paddies, like this one Thursday on a farm in the Indian state of Punjab, contributes to the poor air quality in New Delhi, the capital.
Volkswagen Emissions Scandal Inquiry Widens to Top Levels

Volkswagen Emissions Scandal Inquiry Widens to Top Levels

Hans Dieter Pötsch, the chairman of Volkswagen’s supervisory board, at the carmaker’s annual shareholders’ meeting in June.
Smog Chokes Delhi, Leaving Residents ‘Cowering by Our Air Purifiers’

Smog Chokes Delhi, Leaving Residents ‘Cowering by Our Air Purifiers’

A thick layer of smog covered Connaught Place, in the heart of New Delhi, on Saturday.

Editorial: Choking in New Delhi

Tough new laws from the Modi government are needed as India’s air pollution gets steadily worse.
A Lesson for India in a Fog So Thick It Could Kill a Cow

A Lesson for India in a Fog So Thick It Could Kill a Cow

A thick fog shrouded Trafalgar Square in London on Dec. 7, 1952. This heavy smog episode — from coal-burning fireplaces and cooking ranges — left as many as 12,000 dead.