The sound you hear in a seashell is actually the echo of the blood pulsing in your ear.
Beavers can swim underwater for 15 minutes.
In the 1700’s, you could sell a fresh deerskin of a buck for one dollar – hence, the term “buck.”
If a US coin has the letter “S” printed on it, it was minted in San Francisco; a “D” means it was made in Denver; no letter at all means it was minted in Philadelphia.
The odds against a flipped coin coming up with the same side showing ten times in a row are 1,023 to 1.