- The blueprints for the Eiffel Tower covered more than 14,000 square feet of drafting paper.
- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal..
- The average person walks the equivalent of twice around the world in a lifetime.
- All snakes are carnivorous.
- Each red blood cell lives an average of 4 months and travels between the lungs and other tissue 75,000 times before returning to bone marrow to die.
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