- Unless food is mixed with saliva you can't taste it.
- The supersonic Concorde jet made its first trial flight on January 1st 1969.
- The expression to 'knuckle down' originated from playing marbles (players used to put their knuckles to the ground for their best shots).
- Acorns are poisonous to humans (if eaten it can cause damage to your kidneys).
- The surface area of your lungs is roughly the same size as a tennis court.
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