- The revolving door was invented in 1888.
- Powerful earthquakes can make the Earth spin faster.
- The typical wave height from Pacific tsunami is between 6 - 9 metres.
- There are more chickens than people.
- Don't like mosquitoes? Get a bat. They could eat 3,000 insects a night.
- American's eat 18 billion hot dogs a year.
- Australia is the only country that is also a continent.
- Rain contains vitamin B12.
- The first toothbrush was invented in 1498.
- When a member of a whale group is sick or injured, other whales will push it up to the surface of the water to help it breathe.
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