Role of punctuation in headlines

- [Voiceover] If you're like me,…and you get crazy excited…when it's time to talk about headline punctuation,…well then, there are exactly two of us in the world.…But, there actually is a great reason…to get giddy about headline punctuation,…and that's the fact that a well-place period,…em dash, colon, or jaunty pair of single quotes,…can make your headline clearer and cleaner.…It can infuse your headline with style and voice.…It can even let you say more in a small space.…Let me show you.…I've mentioned that using a question in your headline…can be a useful tool for engaging readers,…and, obviously, if your headline poses a question,…you need a question mark at the end, like this.…

Has Congress lost their ever-loving minds?…Is binge-watching, in fact, really good for you?…But what about periods?…Do headlines need a period at the end?…Does it violate proper rules of grammar,…and would your grade school teacher be ashamed…if she saw you write a headline with no period at the end?…Here's an example of the same headline…