Pollution levels are spiking in Nepal's Kathmandu, leaving its residents with air quality worse than any other city in the ...

Kilometers above the Earth’s surface, the ozone layer protects humanity and all life from the sun’s harmful ultraviolet rays.

Houston-area residents living near Sam Houston National Forest risk breathing in unhealthy pollution from the 2,000-acre wildfire ripping across the area, even as fire crews work hard to battle ...

"Our analysis shows that air quality in Kathmandu was not healthy even before. But the forest fires and a stagnant atmosphere ...

The air quality in the Kathmandu Valley has hit the hazardous or extremely hazardous category this week, according to a new ICIMOD analysis, which shows that high pollution has been prevalent in Nepal ...