- The D.C. in Washington D.C. stands for District of Columbia.
- Forty percent of twins invent their own language.
- A day on Venus lasts longer than a year on Venus.
- The aphid insect is born pregnant.
- Camel's milk doesn't curdle.
- The smallest bones in the human body are found in your ear.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- A fifteen-year-old boy invented earmuffs in 1873.
- There are 31,536,000 seconds in a year.
- In Switzerland, it is illegal to own only one guinea pig because they are prone to loneliness.
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