- Coffee represents 75% of all the caffeine consumed in the US.
- Born in France, Pierre de Fermat was an amateur mathematician who is best known for Fermat's Last Theorem.
- A pigeon's feathers are heavier than its bones.
- The skeleton of an African elephant accounts for about 15% of its body weight.
- A soap bubble is 10,000 times thinner than the average human hair.
- The doorbell was invented in 1831.
- Tug-of-war was an Olympic sport in the early 1900s.
- The $ sign was introduced in 1788.
- The safest car color is white.
- Polar bears have black skin.
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