Minnesota Public Radio slideshow:
University aims to thwart terrorist threats to food supply
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One company, associated with Green Giant, demonstrated software that could be used to track food at each point of its production and distribution. (MPR Photo/Marisa Helms)

One company, associated with Green Giant, demonstrated software that could be used to track food at each point of its production and distribution.

(MPR Photo/Marisa Helms)
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