- The Eifel Tower has 2,500,000 rivets.
- The first sailing boats were built in Egypt.
- The blueprints for the Eiffel Tower covered more than 14,000 square feet of drafting paper.
- The average human brain contains around 78% water.
- In the 17th century Galileo Galilei and Johannes Kepler made important discoveries relating to planetary motion and orbits..
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