A researcher is building a tool that will help police locate a body earlier -- and possibly tell when the victim died.

Unlike the behavior of insects, whose colonization of open-air corpses can vary tremendously depending on factors such as weather, season, even the thickness of a victim?s clothing, the bacterial decay of a buried corpse marches forward in a fairly consistent fashion. ?Buried bodies give us relatively uniform decomposition with a minimal amount of variables,? Vass says. Even a shallow grave keeps its contents relatively bug-free and nicely chilled to between 55

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