Out of Thin Air: How Money is Really Made

Newer bills cary security threads, color-shifting ink and watermarks. None of that insures the money will grow, however. For that, you need lots of lending and even more faith.

Money may not grow on trees, but it does come from U.S. government printing presses. And the Mint can't keep up with demand.

The U.S. Bureau of Engraving and Printing (whose website name perhaps says it all: moneyfactory.gov) churns out about 38 million bills of varying denominations daily, all worth $750 million in face value. Facilities in Fort Worth, Texas, and Washington, D.C., use 18 tons of ink per day to keep up.

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Kimberly Hickok
Live Science Contributor

Kimberly has a bachelor's degree in marine biology from Texas A&M University, a master's degree in biology from Southeastern Louisiana University and a graduate certificate in science communication from the University of California, Santa Cruz. She is a former reference editor for Live Science and Space.com. Her work has appeared in Inside Science, News from Science, the San Jose Mercury and others. Her favorite stories include those about animals and obscurities. A Texas native, Kim now lives in a California redwood forest.