- 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.
- Melophobia is the fear of music.
- The center of the Sun is approximately 15 million C (27 million F).
- 90% of all volcanic activity occurs in the ocean.
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