Currency paper also has small red and blue fibers embedded within it, making it difficult to reproduce. The cotton and linen fibers make the money less prone to tearing than paper—it takes about 4,000 double folds to rip a bill.
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Key Facts In This Video
In 2013, the U.S. Mint produced 1,792,000,000 dollar bills. 00:29
In an effort to catch smugglers, Argentina has trained dogs to sniff out the distinct odor of money. 01:06
The majority of U.S. bills is contaminated with cocaine, fecal matter, bacteria, sweat, snot, and other materials. 01:58