- There are more chickens than people.
- 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.
- An arrow frog has enough poison to kill over 2,200 people.
- The night vision of tigers is 6 times better than humans.
- Sea water is approximately 3.5% salt.
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