- The dot on top of the letter 'i' is called a tittle.
- Artificial Christmas trees have outsold real ones every year since 1991.
- Everyday is a holiday somewhere in the world.
- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal.
- The Basenji is a dog that yodels instead of barking.
- It is impossible to sneeze while you are sleeping.
- The world's first paved streets were laid in Rome in 170 B.C.
- The world's knowledge is growing so fast that 90% of what we will know in 50 years time will be discovered in those 50 years.
- Tennis was originally played with bare hands.
- The surface area of a brick is 79 cm squared.
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