Before we can understand why the sky looks bluer in the fall, it's important to first know why the sky appears blue in the first place. The sun emits white light, and due to Rayleigh scattering (the ...

WASHINGTON — From crimson leaves to golden fields and coppery hills, Mother Nature is known to put on a show during the fall months. If you look up and notice a bluer-than-average sky, your eyes ...

The sun emits white light, which is a combination of all the colors of the visible light spectrum. That is the spectrum that the human eye is capable of seeing to varying degrees. Blue light tends to ...

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 the air with tiny particles. The particles, such as soot, ash, and ...