- Your normal body temperature is 37C (99F).
- Dolphin's can detect underwater sounds from 24 km (15 miles) away.
- You can buy square watermelons in Japan (developed to stack better in supermarkets).
- 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 human eye blinks over 4,200,000 times a year.
- After Hawaii, New York is the state surrounded by the most water.
- To crack a whip the tip must be travelling faster than the speed of sound.
- Coconuts kill over 150 people each year (more than sharks).
- Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
- Clouds fly higher during the day than the night.
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