Add Yahoo as a preferred source to see more of our stories on Google. The sky isn't just blue by chance. It takes all the colors of the rainbow for us to see it that way. It happens because of ...

I love the fall season. I am a sports fan so it is the time of the year when football, basketball, and baseball converge. One of the other things that I love about the fall is the cool, crisp mornings ...

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Carolina or Duke blue? Either way, the sky is bluer in fall Look up! The sky takes on an extra-blue hue in the fall, because of low humidity and an increased amount of Rayleigh scattering.

Look up on a clear sunny day and you will see a blue sky. But is this the true color of the sky? Or is it the only color of the sky? The answers are a little complicated, but they involve the nature ...

The sky takes on an extra-blue hue in the fall, because of low humidity and an increased amount of Rayleigh scattering.