crime-fighting

Scientists Prove DNA Evidence Can Be Fabricated


Time to order extra black lights and sun glasses, because crime scene investigation just got a whole lot harder. A group of Israeli scientists have proven that DNA evidence can be faked and even created, all without tissue samples.

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Drag Net

A new police device puts a safe, quick end to car chases

With cop cars disappearing from his rearview mirror and an open road ahead, a fugitive thinks he’s in the clear—until his car comes to a sudden halt. A sheriff, hiding in the bushes, has activated a road trap that sprung a ball of straps into the car’s undercarriage, immobilizing its drive shaft and axles.

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The Darwinian Police Sketch

With crime-fighting software inspired by evolution, a picture is worth a thousand . . . other pictures

As often happens during a crime, a victim gets only a brief glance at the assailant. Later, when police ask him for a description of the perpetrator, he
has trouble recalling details. But now, with new identification software developed by

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December 2009: Best of What's New

In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.

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