- Domestic cats dislike citrus scents.
- Dolphin's can detect underwater sounds from 24 km (15 miles) away.
- Before emojis, there were emoticons, which are icons created from keyboard characters.
- A bolt of lightning can reach temperatures hotter than the sun.
- Gunpowder is formed by mixing charcoal, saltpetre and sulphur.
- Hawaii is the only US state that grows cacao beans which go into the production of chocolate.
- The longest street in the world is Yonge street in Toronto Canada measuring 1,896 km (1,178 miles).
- A fire will burn faster moving uphill than downhill.
- Brazil borders every country in South America except Chile and Ecuador.
- Paper money was first used in China.
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