60 Minutes Overtime, 01.15.12

      |No matter how you say it, chances are you're pronouncing "Qatar" wrong. Bob Simon sorts it out; Also, Groupon grew from a simple idea to a $15 billion company in just three years. Lesley Stahl on whether their success can last; And, what's it like to spend time with a teenage genius? Morley Safer and producer Katy Textor did just that.

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