- Dolphin's can detect underwater sounds from 24 km (15 miles) away.
- Rain contains vitamin B12.
- You can't trademark surnames.
- The original name of Bank of America was Bank of Italy.
- The Nobel Peace Prize is named for Alfred Nobel, the inventor of dynamite.
- The meaning of 'Blue Chip' comes from blue casino chips which have a high value.
- 'orology' is the study of mountains.
- Frogs don't usually swallow water (they absorb most of the moisture they need through their skin).
- The equals sign (=) was invented in 1557 by a Welsh mathematician named Robert Recorde.
- Fish can cough.
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