What is U.S. paper money mostly made of?

A dollar bill is 75% cotton and 25% linen, closer to fabric than to paper.

  1. Cotton and linen ✔
  2. Paper made from wood pulp
  3. Thin plastic

Why: U.S. bills are about three-fourths cotton and one-fourth linen, the same kinds of fibers used in clothes, not wood paper like a notebook. Tiny red and blue threads are mixed in to help stop counterfeiters.

Huh, didn't know that: Tiny red and blue threads are mixed in to help stop counterfeiters.

The dad joke
If money doesn't grow on trees, then why do banks have branches?
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Sources

  1. U.S. Currency Education Program: $1 Note https://www.uscurrency.gov/denominations/1