The dramatic cool down and thick smoke from NorCal wildfires made for a particularly gray Wednesday across the region. Unfortunately more of the same is expected today, but by the weekend conditions ...

Jonah Kaplan is an award-winning journalist who has built a strong reputation for his balanced reporting, thoughtful interviews, and deeply researched coverage of high-impact issues affecting the ...

The ceilometer is a scientific tool of observation used by airports daily. It informs aircraft pilots of cloud heights and bases for safe takeoff and landing. In recent years, scientists have found a ...

The wildfire that destroyed the historic Grand Canyon Lodge earlier this month has expanded to more than 105,000 acres, fire officials in Arizona said Thursday. A timelapse video captured on Tuesday ...

The lack of humidity we’ve been enjoying the past few days is going to stick around throughout the rest of the day. With temperatures in the upper 70s, things are going to be very comfortable once ...

The smoke in the air on Tuesday was so thick you could see it and smell it. The Minnesota Pollution Control Agency (MPCA) released an air quality alert, with most of the Twin Cities Metro in the red, ...

Add Yahoo as a preferred source to see more of our stories on Google. A helicopter buzzes overhead as wildfire smoke blankets Highway 97 north of Buckinghorse River. Nasuna Stuart-Ulin/Canadian Press ...

Early risers in Texas saw something a little bit unusual earlier this week. A rare display of “meteor smoke clouds” — technically called noctilucent clouds — was rippling overhead before sunrise on ...