ST. LOUIS – The sky is always changing colors—from a bright blue on a clear day, to red and orange sunrises or sunsets, or multiple colors of a rainbow—there’s a lot going on that we don’t always ...

Visible light travels in electromagnetic waves, which we see as the colors of the rainbow. Different colors have different wavelengths of light. Violet and blue have the shortest wavelengths, whereas ...

This week, Morning Brief reader Collette wrote in to ask, "There may be blue sky, but what makes for a deeper blue in one area and a lighter blue in another?" Meteorologist Jonathan Belles: It all ...