- Pez was invented in 1927.
- 45,000 thunderstorms around the world occur every day.
- When a koala is born, it is about the size of a jelly bean.
- The most sung song is happy birthday.
- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal.
- Birds can sleep with one eye open.
- The average raindrop weighs less than an eyelash.
- There are more tigers owned by Americans than in the wild worldwide.
- Red light has the highest wavelength.
- Ants stretch when they wake up in the morning.
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