Word: chemists
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Dates: during 1990-1999
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...rogue agent has been a willing witness for the defense at some of the country's most high-profile criminal trials. A forensic chemist specializing in explosives residue, he gave testimony critical of FBI lab work in the World Trade Center bombing trial and was on the defense team's witness list in the O.J. Simpson trial, where he stood ready to testify about evidence contamination. And now, with hearings under way in the Oklahoma City bombing case--in which late last week in Denver, Judge Richard Matsch ruled that defendants Timothy McVeigh and Terry Nichols could be tried separately...
Johnson was not sure he was making the right decision when he came to Fidelity. He remembered that his paternal grandfather had been miserable running the family dry-goods business out of a sense of obligation when he really wanted to be a chemist. But as soon as Johnson started managing money, the doubts disappeared. "It was absolutely fascinating," he recalls. And rewarding. He holds the all-time record for annual return on investment by a Fidelity fund manager: 116% for running Magellan...
That raised an obvious question. Could these compounds have resulted from earthly contamination of the meteorite during its long Antarctic layover? Not likely, says Richard Zare, a Stanford University chemist who developed and used the analyzer that detected the PAHS and other meteoric hydrocarbons. The researchers performed a "depth profile" on the meteorite, and although no pahs were found on its crust, they were found inside the rock. Had any of Earth's abundant PAHS seeped in, says Zare, he would have expected to find more contamination on the outside than in the interior...
...community is sharply split on the question, and the evidence from Mars not only heats up the debate but also adds a tantalizing third possibility: life-forms may have arisen on Mars first and then hitched a ride on a meteorite to Earth--or vice versa. As Stanford University chemist Richard Zare puts it, "Who is to say that we are not all Martians...
...easier if microscopic chemical agents called taggants were present at the scene. Taggants are like fingerprints or bar codes. Mixed with gunpowder and other explosive agents, they can identify the manufacturer, the point of sale or theft, and provide other useful information. They were invented by a Minnesota chemist in 1973 and for the past 11 years their mandatory use in Switzerland has helped Swiss police solve more than 500 explosives cases. But adding taggants to black and smokeless gunpowder in the U.S.--the materials common in many unsophisticated bombs--is still prohibited...