

A meter is longer than a yard. An ounce is heavier than a gram. We harmlessly mix them up sometimes, but a "unit conversion error" when you're filling up the fuel tanks of an airliner can be fatal. Which is exactly what happened to Air Canada Flight 143. Tim Harford talks to mathematician and…

BBC Radio 4

History Hit

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The HISTORY Channel | Back Pocket Studios | Audacy

History Hit

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RNZ