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After analyzing how ignitable liquids break down because of weathering and biological degradation in the aftermath of a fire, researchers have provided new data to fire investigators and crime labs.
By touching a cell phone, car keys, or even a pen, you are leaving behind a chemical signature that can reveal much about how you live your daily life.
Identifying a car, truck, or other vehicle that has been involved in a hit-and-run accident often depends on examining paint fragments left at the scene by the vehicle.
