Amazing fact about the invention of the lighter
The cigarette lighter was invented before the match.
- Home
- United States Facts
- What are US dollar bills made of?
“US dollar bills aren't really paper. They're made of 75% cotton and 25% linen, which is why they survive the washing machine.”
Reference: US Bureau of Engraving and Printing
More facts about the United States.
More united states facts
Who invented paper?
Chinese court official Cai Lun is traditionally credited with inventing paper around 105 AD, though older paper fragments show the craft existed earlier.
Microwaves in U.S. households
In 1978, only eight percent of U.S. households had microwave ovens. As of 2006 over 80 percent have them.