BUFFALO, N.Y. — With so many types of clouds in the sky, some are a little more unique than others. And sometimes, clouds can even shine like a rainbow! Here's why that happens. Over the weekend Storm ...

Many of our viewers have noticed rainbow clouds over the past few days. This is actually a rare phenomenon called "cloud iridescence". This happens when sunlight is diffracted off of tiny water ...

This happens when clouds are thin and made of similar-sized water droplets. — -- Stunning video captured a rainbow in the clouds over Ribeirao Claro, Brazil, in a meteorological phenomenon known ...

FARGO — Sometimes, you may look up to the sky and see a rainbow in a cloud, but there is no rain around. Likely what you are seeing is a type of atmospheric optical phenomenon known as cloud ...

In animals, colors are produced either by pigments or by tiny, light-scattering nanostructures. While an impressive range of pigments exists in living organisms, these are ultimately limited by ...