First, let's explain why we see the color blue in the sky as opposed to other colors. The sun actually emits a 'white' light composed of all of the colors of the rainbow. But as the light reaches ...

It’s sort of like a mad rush, losing-my-mind busy,” said Gailan Wensil-Strow, a vice president of American Sentry Solar, which is installing Dufour’s system.

Ever gazed up on a bright day and wondered why the sky isn’t green, purple, or pink, but a vivid blue? The answer lies in how sunlight interacts with Earth’s atmosphere, creating a daily spectacle of ...