A form of harmful air pollution that often can't be plainly observed is now being tracked with a groundbreaking new tool developed by scientists that allows residents to see where it's coming from.

Many options allow full customization of the maps. The new embed option opens up a convenient way for websites to share comprehensive weather data.” — David ...

(NEXSTAR) – With dangerously-cold arctic air already settling over a large swath of the U.S. Friday, at least 177 million people are under watches or warnings for ice and snow. States in the Northeast ...