Add Yahoo as a preferred source to see more of our stories on Google. Ever wonder why the sky is blue on a clear day, but red when there are pollutants such as smoke in the air? Wildfire smoke fills ...

People in New York City and across the northeastern United States woke up Tuesday morning to an unusual sight. Depending on the time, early risers reported witnessing either the moon or the sun ...

The National Weather Service on Tuesday shared satellite images of smoke and haze drifting across New York and the Tri-State area. The sun across much of the Northeastern U.S. has had a red-orange ...