- 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.
- The frozen foods were first introduced in the 1920..
- Dolphins can hear underwater sounds from 24km (15miles) away.
- Petrol has no specific freezing point (it can freezes at any temperature between -82 and -115C (-180 and -240F).
- The average porcupine has 30,000 spikes.
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