- Cotton can catch fire with enough super glue applied.
- The longest attack of hiccups lasted 68 years.
- The grapefruit gets its name from the way it grows in clusters like grapes on a vine.
- The shell is 12% of an eggs weight.
- Crocodiles swallow rocks to help them dive deeper.
- A shrimp's heart is in its head.
- The 3 most common languages in the world are Mandarin Chinese, Spanish and English.
- The longest one syllable word in the English language is 'screeched'.
- The expression to 'knuckle down' originated from playing marbles (players used to put their knuckles to the ground for their best shots).
- 80% of all people hit by lightning are men.
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