- Kangaroos cannot jump without their tails touching the ground.
- Sharks have been on Earth for over 400 million years.
- An electric eel can release a charge powerful enough to start 50 cars.
- Men have 10% more red blood cells than women.
- The average shower temperature is 38C (101F).
- Gunpowder is formed by mixing charcoal, saltpetre and sulphur.
- The longest alphabet has 74 letters.
- Sir Isaac Newton was 23 when he discovered the law of gravity.
- Here is Pi written to 100 decimal places:
3.1415926535897932384626433832795028841971693993751
058209749445923078164062862089986280348253421170679.
- There are over 100,000 different species of butterflies.
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