- Artificial Christmas trees have outsold real ones every year since 1991.
- Mapping is older than writing.
- The expression to 'knuckle down' originated from playing marbles (players used to put their knuckles to the ground for their best shots).
- Employees of the Vatican pay no income tax.
- A Boeing 747 airliner holds 216,847 litres (57,285 gallons) of fuel.
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