- The symbols used for addition (+) and subtraction (-) have been around for thousands of years but it wasn't until the 16th century that most mathematical symbols were invented. Before this time math equations were written in words, making it very time consuming.
- Brontophobia is the fear of thunderstorms.
- Hawaii officially became apart of the US in 1900.
- 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).
- Oxygen supply influences the color of a fire's flame.
- When hydrogen burns in the air water is formed.
- A very small raindrop can travel up to 7 minutes from the sky before reaching you.
- You are always looking at your nose, your brain just chooses to ignore it.
- Rubber bands last longer when refrigerated.
- Women's hearts typically beat faster than men's hearts.
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