- The compass and straight edge were powerful tools in the advancement of geometry, allowing the construction of various lengths, angles and geometric shapes..
- A person will die from total lack of sleep sooner than from starvation (Death can occur about 10 days without sleep while starvation takes a few weeks).
- Lion's can't roar until the age of 2.
- Half of all crimes are committed by people under the age of 18.
- Diamonds are the hardest substance known to man.
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