- Fire usually moves faster uphill than downhill.
- When 2 zebras stand side by side they usually face each other in opposite directions to keep an eye out for predators.
- The human eye can detect more shades of green that any other colour.
- Red light has the highest wavelength.
- 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.
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