The (green) Super Bowl ad you didn't see

Yup. Soda Stream, and its competitors allow you to rent a cylinder of carbon dioxide and make your own club soda and flavored soft drinks (diet too) from tap water in a reusable bottle. It's a good way to help the environment. As the writer David Roberts points out on Grist.org, there are expensive environmental costs associated with bottled drinks, whether they are water or soda.

Roberts also links to this article on The Daily Beast that explains how CBS refused to play the ad - and the impact that refusal is having.

Do I have a soda maker? Yes.