- U.S. paper currency isn't made of paper u2013 it's actually a blend of cotton and linen.
- Sea water is approximately 3.5% salt.
- In 2015, the Oxford word of the year was the tears of joy emoji.
- The electric chair was invented by a dentist.
- A cat has 32 muscles in each ear.
- Dairy cows drink up to 50 gallons of water per day.
- A Galapagos tortoise can take up to three weeks to digest a meal.
- 12 + 3 - 4 + 5 + 67 + 8 + 9 = 100.
- Instant mashed potatoes (dehydrated potato flakes) were invented in Canadian in 1962.
- 'underground' is the only word that begins and ends with the letters 'und'.
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