- The coloured part of your eye is called the iris.
- A shrimp's heart is in its head.
- Niagara Falls could fill 4,000 bathtubs every second.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Cars were first started with ignition keys in 1949.
- It is illegal to play annoying games in the street in the UK.
- A fifteen-year-old boy invented earmuffs in 1873.
- A moth has no stomach.
- The number 4 is the only number that has the same number of letters in it.
- It takes 1 alligator to make a pair of shoes and 3 for a pair of boots.
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