A new study led by the University of Colorado Boulder suggests that forensic scientists could use the microbial clock to determine time of death. One of the first questions asked--which you would know if you watch Law and Order-is what time did the victim die? But current techniques, like timing of last text messages, aren’t reliable. A microbial clock is essentially succession of bacterial changes that occur postmortem as bodies move through the decay process. And researchers say these patterns are consistent in corpses post-mortem, and this technique could be complementary to current techniques.