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).
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Tracking the Trend: Interval Running

WASHINGTON - Running is one of the simplest ways to get moving. But not everyone wants to log slow, steady miles on repeat.