View full lesson: http://ed.ted.com/lessons/how-to-visualize-one-part-per-million-kim-preshoff-the-ted-ed-community

“Parts per million” is a scientific unit of measurement that counts the number of units of one substance per one million units of another. But because it’s hard to conceptualize really large numbers, it can be difficult to wrap our brains around what “one part per million” really means. Kim Preshoff (with help from 100+ animators from the TED-Ed Community) shares nine helpful ways to visualize it.

Lesson by Kim Preshoff, animation by TED-Ed Community.