- The average life span of a mosquito is 2 weeks.
- Commercial airplanes maintain a cabin pressure of about 6,400 feet (just over 1 mile) above sea level.
- Lion's can't roar until the age of 2.
- Flightless birds, like the penguin, could once fly.
- The number 4 is the only number that has the same number of letters in it.
- The average human brain contains around 78% water.
- All pilots on international flights identify themselves in English regardless of their country of origin.
- The average person has 10,000 taste buds.
- There are a million ants for every person on Earth.
- The revolving door was invented in 1888.
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