An unnamed emergency service source told the Russian news agency Tass on Thursday: "Former military pilot Vitaly Kiyashko, ...

The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

From the rugged mountain country of the West to the big woods of the Upper Midwest and Northeast, every outdoorsperson should ...

A Russian oil refinery and gas processing plant went up in flames after Ukraine fired dozens of drones over the border Sunday ...

Anna Kaye’s latest exhibit at the Denver Botanic Gardens studies how Colorado’s wildfires are both devastating yet necessary.

Fueled by powerful winds and dry conditions, a series of ferocious wildfires erupted the second week of January and roared ...

Deadly wildfires around Los Angeles in January reduced thousands of acres to ash but a picture of a burnt cat that spread online is unrelated to the recent inferno. It dates to a wildfire that ...