Whether it's Saint Patrick's Day or National Find A Rainbow Day (April 3), everyone loves finding a rainbow - and maybe a pot of gold at the end. I can't tell you how to find a pot of gold, but I can ...

Sunlight holds hidden colors. Raindrops act like prisms, bending light. This bending separates colors, creating a rainbow.

Marc Weinberg was tagged in this picture on twitter today and noticed something different about the rainbow. Can you see the faint bow lines? Those are known as supernumerary rainbows... Hannah Strong ...

This week, thanks to a question from Temple, New Hampshire resident Lorraine von Sneidern, the Curiosity Desk not only went chasing answers, we also went chasing rainbows. "Why are the rainbows that I ...