Question: What are ‘quants’? Paul Solman: Quantitative experts, or if you prefer, “number jocks” or “math whizzes” who have gone to “Wall St.” (ie, the world of finance). They construct formulas for investing and packaging investments. Take their…

Editor’s Note: As Barack Obama’s presidency reaches the 100-day mark, the NewsHour is examining how the president’s policies and the economic crisis are affecting one city – St. Louis, where Obama will mark the milestone April 29. Paul’s segment on…

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