Emissions are rising every year in these cities, but the meteorological and geographical advantages they enjoy are limited, ...

A dense blanket of winter smog settled over Southern California on Tuesday, December 9, 2025, prompting an extraordinary ...

Ozone pollution isn’t just a summer story anymore. In parts of northern China, high ozone levels are now appearing during winter—an alarming twist that defies decades of air quality science. This ...

LONDON, Feb 27 (Thomson Reuters Foundation) - In Iran this winter, hospital emergency rooms have been full, schools regularly closed, and many people unable to work or even leave their homes due to ...

For hundreds of millions of Indians, toxic winter air poisons bodies, constricts lives and wears down spirits.

Children exposed to traffic-related air pollution show seasonal changes in their nasal bacteria, with winter pollution driving a shift toward less diverse, and potentially more harmful, microbial ...

The winter air pollution season started early this year with emissions, Diwali firecrackers and crop residue burning making the air unbreathable across north India. Much of the pollution was ...

Millions in India's capital face a persistent health hazard from air pollution, with sustained high levels of PM2.5 linked to severe respiratory, cardiovascular, and neurological damage. This daily ...

Air in the U.S. has gotten cleaner for decades, adding years to people's lives and preventing millions of asthma attacks, but nearly half of Americans still live with unhealthy air pollution, a new ...

Chinese scientists have warned that the country's toxic air pollution is now so bad that it resembles a nuclear winter, slowing photosynthesis in plants – and potentially wreaking havoc on the country ...