- The number of times a cricket chirps in 15 seconds, plus 37, will give you the current air temperature.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Along with arithmetic, geometry was one of the two fields of pre-modern mathematics.
- Fresh apples float because they contain 25% air.
- 1 square inch of human skin contains 625 sweat glands.
- Achluophobiais the fear of the dark.
- Wind doesn't make a sound until it blows against an object.
- Every year the sun loses 360 million tons.
- A cat can keep purring while inhaling and exhaling.
- Crocodiles are responsible for over a 1,000 deaths each year by the Banks of the Nile river.
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