- Everyday is a holiday somewhere in the world.
- A cat can keep purring while inhaling and exhaling.
- 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..
- 45% of Americans don't know that the sun is a star.
- Your head contains 22 bones.
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