- Hippopotamuses have killed more people in Africa than any other animal.
- Most dinosaurs lived to be more than 100 years old.
- A violin contains over 70 separate pieces of wood.
- What comes after a million, billion and trillion? A quadrillion, quintillion, sextillion, septillion, octillion, nonillion, decillion and undecillion.
- Giraffes can grow more than 18 feet tall.
- An individual blood cell takes about 60 seconds to make a complete circuit of the body.
- Nintendo first produced playing cards.
- The first sailing boats were built in Egypt.
- The equals sign (=) was invented in 1557 by a Welsh mathematician named Robert Recorde.
- People who work at night tend to weigh more.
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