"... it's kind of a catchy acronym. It stands for Clusters of Regularly Interspaced Short Palindromic Repeats. Oh! Don't make me say that again. ... What it means — what it symbolizes — is an immune system in bacteria that uses sequences of DNA (that come originally from viruses) ... that are transcribed into molecules of RNA that can use a search-and-destroy mechanism in cells to find and cut up virus genetic material"