- The hydrochloric acid found in your stomach is strong enough to dissolve a nail.
- No two spider webs are the same.
- Ralph Lauren's original name was Ralph Lifshitz.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Earth's sky is purple, our eyes just see it as blue.
- Crocodiles swallow rocks to help them dive deeper.
- Dogs can make about 10 sounds, while cats make about 100.
- England's first great industry was wool.
- In a deck of cards the king of hearts is the only king without a moustache.
- The human eye blinks over 4,200,000 times a year.
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