A scattering of mid-level and high level clouds create colorful sunrises and sunsets. This is because the higher clouds intercept the longer wavelength red and orange light as the sun is setting.

On Dec. 7, 1941, world history changed, but Saturday, exactly 83 years later, in a small sidelight to great events, it seemed that at least one thing in the District had not changed much.

Arizona has some of the prettiest sunsets, but why? There's a science behind it. Here's what to know, including sunset times ...

But when one of the more vivid ones does happen, you'll spot everyone pausing to take in — or photograph — nature's most colorful show. But why are the sunsets in Arizona so much more vivid ...