A rainbow, cloud bow, morning glories, halo, sun dog (parhelion), or any kind of optical arc in the sky involve some form of water or ice interacting with sunlight. There are a lot of great places ...

T he sky isn't just blue by chance. I t takes all the colors of the rainbow for us to see it that way. I t happens because of ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The ...