Who'd have guessed all those marks on cash have a practical purpose? At least on one smaller currency denomination, this seal ...
George Washington’s portrait The United States’ first president, George Washington, has been on the front side of the ...
1don MSN
How number systems shape our thinking, and what this means for learning, language and culture
Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).
A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...
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