- Here is Pi written to 100 decimal places: 3.1415926535897932384626433832795028841971693993751 058209749445923078164062862089986280348253421170679.
- More than 75% of all countries are north of the equator.
- The rarest type of diamond is green.
- The tallest mammal is the giraffe.
- Crocodiles continually grow new sets of teeth to replace old ones.
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