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Good Idea: Lift Fingerprints

On a hunch, crime scene investigator Richard Warrington, now retired, found a new way to fight crime with a stun gun: lifting prints. Warrington’s hack involves placing a sheet of sun-blocking film over a freshly dusted print. He attaches the loose end of a wired probe to one outer contact of a stun gun. While holding the wire’s probe one quarter inch above the film, he turns on the gun and slowly guides the electricity-shooting probe around the perimeter of the film, electrostatically charging it. Then Warrington turns off the gun, waits 10 to 15 seconds, and glides a foam brush across the film’s surface to attract a reverse image of the print for forensic analysis.

Bad Idea: Remove Poison From Wounds

For two decades, survivalist forums and even some doctors have recommended shocking snake and spider bite wounds to neutralize venom. Science says this idea bites: You’re most likely to get burned—and remain poisoned.

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