marvelling at the vast expanse of blue overhead, and wondered why the sky isn't, say, green or red? This seemingly simple ...

Often, the sky takes on a vibrant red-orange color ... through while blocking the shorter wavelengths, like yellow, blue and green, according to USA TODAY. In this case, the smoke “is able ...

The blue and green light is scattered so well that you can hardly see it. The sky is colored, instead, with red and orange light. Colors mean a lot to us in so many different ways. Understanding ...