View full lesson: http://ed.ted.com/lessons/what-gives-a-dollar-bill-its-value-doug-levinson
The value of money is determined by how much (or how little) of it is in circulation. But who makes that decision, and how does their choice affect the economy at large? Doug Levinson takes a trip into the United States Federal Reserve, examining how the people who work there aim to balance the value of the dollar to prevent inflation or deflation.
Lesson by Doug Levinson, animation by Qa'ed Mai.