New technologies help crack old cases

DNA model
A model of DNA's double helix structure.
Image courtesy of the Center for Structural Biology at Yale University

Law enforcement agencies have put more focus on solving cold cases in recent years, in part because new technology has made it possible to solve old crimes. Sgt. Anita Muldoon heads up the cold case unit at the St. Paul Police Department and she joined Cathy Wurzer this morning by phone.

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