- Polar bears have black skin.
- The Earth weighs 6,588,000,000,000,000,000 tons.
- The odds of being struck by lightning are 600,000 to 1.
- Koalas and humans are the only animals with unique fingerprints.
- Check out some more big numbers.
- Rats and mice are ticklish, and even laugh when tickled.
- When lightning strikes it can reach up to 30,000 degrees celsius (54,000 degrees fahrenheit).
- The human eye can detect more shades of green that any other colour.
- Your skull is made up of 29 different bones.
- Every day 7% of the US eats at McDonalds.
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