Word: tracee
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Dates: during 2000-2009
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...mild concussion and doesn't balk at the filming of the five stitches he sews into the back of Knoxville's head. As Knoxville dizzily hobbles off, he turns around to say goodbye to the journalist who's been sharing the bloodbath of a day with him. Without a trace of irony, he says, "Take care of yourself...
...Mingwei, the physical design of his projects always remains secondary to the art of social interaction. From his early years training under Ch’an Buddhist monks in Taiwan, he learned from his teachers to “leave behind no residue or trace.” As an international installation artist, Mingwei is effectively air-dropped into communities and must rely upon the people he meets once there to mold and inspire his site-specific work. In this case, that community is Harvard: its students, faculty, administrators, classes, Houses, Masters and many guests and visitors...
...that have a nucleus, which rules out cells in fingernails, teeth and the shafts of hair. What those cells do have, however, is something called mitochondrial DNA, a more primitive form of genetic coding inherited from the mother only. A mitochondrial-DNA sequencing technique developed by anthropologists to help trace human ancestors has been adopted by pioneering crime fighters. Nobody pretends that the new technology is anywhere near as precise as traditional DNA profiling. Nonetheless, later this month an Iowa man, Stephan Zanter, 46, may come to trial for a murder committed in 1989, thanks to mitochondrial testing...
...first time, or the perp might walk. A new laser ablation spectrometer under development could solve that problem by etching off only a tiny slice of a sample with a needlelike light beam and cooking it in a plasma furnace equipped with a mass spectrometer especially sensitive to trace elements. Similarly, researchers at California's Lawrence Livermore National Laboratory have shown that a synchrotron radiation device can bounce a beam of infrared energy off a piece of evidence and analyze the spectrum of its reflection without damaging the sample. Researchers are also trying to use infrared hardware to analyze...
Which clues are real? It's not enough to "bag and tag" everything at a crime scene. The trick is to figure out what's important. If, for example, a wife is suspected of killing her husband in their bedroom, virtually all trace evidence in the room-fibers, hairs, fingerprints-could be useless. Proving that the wife was in her own room probably won't help the case...