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These cards could provide a treasure trove of information for epidemiologists. Melissa Forsyth/NPR hide caption

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Melissa Forsyth/NPR

The Salt

Swipe A Loyalty Card, Help A Food Detective?

November 17, 2011 • In many food safety investigations, disease detectives ask people what they ate. But most people often can't remember. Enter the loyalty card database, which never forgets.

Do Super-Sized Portions Boost Social Status?

Denny's Beer Barrell in Clearfield, Penn. features a 15 pound burger for $39 that is free if the customer can finish it. Jeff Swensen/Getty Images hide caption

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Jeff Swensen/Getty Images

The Salt

Do Super-Sized Portions Boost Social Status?

November 4, 2011 • People opt for bigger food portions when they're feeling powerless, according to new research. And when they're told that tiny portions are prestigious, they go small. That may be one reason why super-sized portions are so alluring, and why waistlines are bulging.