As Des Moines was hit with strong thunderstorms Tuesday, pictures of a "shelf cloud" start circulating social media. The images displayed what looked like low hanging clouds under more cloud coverage ...

Rainbows sometimes appear in the sky after a downpour, while water droplets still are lingering in the air. Those droplets, like a prism, bend white light from the sun into an arc of red, orange, ...

Got your head in the clouds? Well, that's exactly where I want you. Clouds are fascinating to watch as they float through the sky. But what is even more intriguing is that their appearance can give ...