- A baby fetus develops fingerprints at eighteen weeks.
- The world's knowledge is growing so fast that 90% of what we will know in 50 years time will be discovered in those 50 years.
- 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 surface area of your lungs is roughly the same size as a tennis court.
- The average person swallows 295 times during a meal.
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