- The human brain takes up 2% of human body weight but uses 20% of its energy.
- Spain's largest source of income is from tourism.
- Born in France, Pierre de Fermat was an amateur mathematician who is best known for Fermat's Last Theorem.
- Giraffes can't swim.
- Cooking or freezing does not reduce the heat (spiciness) of a chile pepper.
- Your fingernails grow faster when you are cold.
- The Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, ....
- The fingerprints of koala bear are indistinguishable to that of a human.
- A pigeon's feathers are heavier than its bones.
- Cows give more milk when they listen to music.
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