- 20% of China's plants are used in medicine.
- Birds need gravity to swallow.
- The oldest cockroach fossils are over 280 million years old.
- No number from one to 999 includes the letter "a" in its word form.
- Cows can walk up stairs but not down them.
- The only continent without reptiles or snakes is Antarctica.
- Half of all crimes are committed by people under the age of 18.
- Onions are part of the lily family.
- Only 4 out of 20,000 species of bees produce honey.
- The hydrochloric acid found in your stomach is strong enough to dissolve a nail.
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