How to turn milk into a hard plastic nearly as strong as stone! All we need for this simple kitchen science experiment is milk, vinegar and a strainer. You can make all kinds of shapes and designs using this "plastic-like" material.
You thought the @ sign as a modern invention? From the computer age? Well here's an interesting bit of history on the origins and historical use of this ubiquitous symbol.
The popular story that Ray Tomlinson saved @ from extinction by using it in email has spread as internet gossip. This story is false, and has been retold without people asking obvious questions like "Why was there an @ on Ray Tomlison's keyboard?"