- Dendrophobia is the fear of trees.
- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- The basic arithmetic operations used in mathematics are addition, subtraction, multiplication and division.
- The Grand Canyon can hold around 900 trillion footballs.
- Diamonds are the hardest natural substance.
- You have fewer muscles than a caterpillar.
- Jamaica has 120 rivers.
- Brazil got its name from the Brazilian nut (not the other way around).
- Household dust is made of dead skin cells.
- It takes around 200 muscles to take a step.
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