The interactive Scale of the Universe shows us how minuscule and gargantuan elements in our universe can be. We know that atoms, the basic unit of matter, are small but just how small are we talking about?
Scientist and teacher Jonathan Bergmann answers that question in this quick animated chemistry lesson using blueberries, grapefruits, and football stadiums as metaphors.
You can find many more educational videos at TED-Ed.
[via @blahsum]