- Sound travels 10 times faster through granite than air.
- The popsicle was invented in 1905 by an 11-year-old boy.
- Hippopotamuses have killed more people in Africa than any other animal.
- Sir Isaac Newton was 23 when he discovered the law of gravity.
- Hypnotism is banned in public schools in San Diego (U.S.).
- There are more tigers owned by Americans than in the wild worldwide.
- Fingernails grow faster than toenails.
- Your brain uses 25% of all the oxygen your breathe.
- The first hot air balloon passengers were a sheep, duck, and rooster.
- 53% of women don't leave home without makeup on.
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