At every key moment in US economic history, the chair of the Federal Reserve has set the pace.
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Putting Pakistan's missing female doctors and midwives to work to save lives.
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The tech tackling fake baby formula, dodgy drugs, conflict diamonds and fishy fish.
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The inspiring stories of people who quit their day job for something completely different.
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Tej Lalvani heads up his family vitamins firm but says luck "wasn't handed to him on a plate"
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The growth of easily available credit profoundly altered our attitude to money.
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