- Each year there is one ton of cement poured for each man, woman, and child.
- Dolphins can hear underwater sounds from 24km (15miles) away.
- Fibonacci numbers are named after Italian mathematician Leonardo of Pisa (better known as Fibonacci) who introduced them to Western Europe after they had earlier been described by Indian mathematicians. They are related to the golden ratio and proceed in the following order: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, .... Can you see the pattern?.
- Agoraphobia is the fear of wide open spaces.
- The 'you are here' arrow on maps is called an ideo locator.
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