TED Talks
Ted: Ted Ed: How to Visualize One Part Per Million
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...
Other
Kokogiak Media: The Mega Penny Project
What does one quintillion pennies look like? Would it cover the Earth or Mt. Everest? Use this site to visualize the value of money.