- Greek philosopher and mathematician Pythagoras lived around the year 500 BC and is known for his Pythagorean theorem relating to the three sides of a right angle triangle: a^2 + b^2 = c^2.
- In 1900 the average life span in the US was 47.
- All the blinking in one day equates to having your eyes closed for 30 minutes.
- The night vision of tigers is 6 times better than humans.
- The average elephant produces 22kg (50 pounds) of dunn each day.
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