scientific american - 2003 03 - dinosaur feathers

... COPYRIGHT 2 003 SCIENTIFIC AMERICAN, INC.36 SCIENTIFIC AMERICAN MARCH 2 003 INTERNATIONAL CENTER FOR NEUROLOGICAL RESTORATION (CIREN)newsSCANIn its hard-currency-based health econo-my, Cuba ... simpsoni.COPYRIGHT 2 003 SCIENTIFIC AMERICAN, INC.30 SCIENTIFIC AMERICAN MARCH 2 003 DOUG M. BOYER University of Michigan at Ann Arbor newsSCANunlike euprimates, this an-imal exhibits laterally po-sitioned ... SCIENCEWITH POLITICSWIDESPREAD CELL-PHONE USE mayenable the development of stealth radar.COPYRIGHT 2 003 SCIENTIFIC AMERICAN, INC.28 SCIENTIFIC AMERICAN MARCH 2 003 © SCIENCEnewsSCANLiving primates...

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scientific american - 1993 03 - black holes and the centrifugal force paradox

... is also a con-sequence of the bending of light..Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN March 1993 75Copyright 1993 Scientific American, Inc.78 SCIENTIFIC AMERICAN March ... glu-tamate stimulates additional NMDA re- SCIENTIFIC AMERICAN March 1993 29Copyright 1993 Scientific American, Inc.ceptors, increasing the potential for neu-rotoxicity, Benos explains.Taken together, ... Fermilab workers re-corded a top-quark can-didate, but the evidencewas inconclusive. Yetmaybe, just maybe, phys-icists will soon know thetruth. ÑRussell Ruthen34 SCIENTIFIC AMERICAN March...

scientific american - 1994 03 - visiting yourself in the past

... predictions.Copyright 1994 Scientific American, Inc.Copyright 1994 Scientific American, Inc.20 SCIENTIFIC AMERICAN March 1994In the ÒnaiveÓ quark model, one of thethree quarks spins in a direction oppo-site ... MukerjeeCopyright 1994 Scientific American, Inc. SCIENTIFIC AMERICAN March 1994 21membranes surrounding neurons. Pet-tegrew thinks schizophrenics have animpaired ability to synthesize the mem-branes. ... hexamers (six-base primers) and aprotein that binds to single-strand ge-nomic DNA. The binding protein pre-vents individual hexamers from pairingstably with the DNA. But three end-to-end hexamersÑthe...

scientific american - 1995 03 - can science cure crime

... CRAWFORDCopyright 1995 Scientific American, Inc.Getting rid of the long-lived, ra-dioactive by-products of nucle-ar power is a problem that hasstalked the industry for its 40-year his-toryÑand the ... (800) 77 7-0 444.ScientiÞc American- branded productsavailable. For free catalogue, write Sci-entiÞc American Selections, P.O. Box11314, Des Moines, IA 5034 0-1 314, orcall (800) 77 7-0 444.Photocopying ... it as long as society has a preju-dice against obesity.Ó ÑW. Wayt Gibbs SCIENTIFIC AMERICAN March 1995 35Copyright 1995 Scientific American, Inc. SCIENTIFIC AMERICAN March 1995 37For the past...

scientific american - 1996 03 - revealed - spy photo secrets

... 18 SCIENTIFIC AMERICAN March 1996tion under way in the rem-nant of supernova 1006,this process probably oc-curs in other young super-nova remnants,Ó notes Rob-ert Petre of the ... that arid ice-age con-ditions had broken the Amazonian rainforest into several separate blocks. Haf-fer, a professional geologist and ama-teur bird-watcher, proposed that theice-age drying ... material to test conclu-sively for taxol or any relat-ed substances in the tor-reya. But Strobel feels thetree is promising as a possi-ble source both of taxol-re-lated compounds and ofother...

scientific american - 1997 03 - the rising seas - how much of a threat

... SchneiderNews and Analysis22 Scientific American March 1997Copyright 1997 Scientific American, Inc.News and Analysis24 Scientific American March 1997The ﬁrst time that paleontolo-gist Olivier Rieppel ... of the exhaust noise creat-ed by high-performance jet engines.This noise haspreventedwidespreaduse of super-sonic passen-ger aircraft.Current de-signs for mini-mizing noisecall for metalshrouds. ... Stone ImagesCopyright 1997 Scientific American, Inc.contaminants, but the ﬁne-grained sed-iments that accumulate on the bottomof the sea can hold fast to certain ra-dioactive elements, effectively...

scientific american - 1998 03 - inside a virtual human

... “No; it was veryexpensive,” he explains.At Dolphin on West 19th, I met Fabi-an, a six-foot-tall, 258-pound, 34-year-old professional wrestler who lifts ﬁvetimes a week. In Fabian’s mind, Fabianis ... pounds.”The one content lifter I met was atJohnny Lats Gym, a 24-hour-a-day hard-core joint on East 17th. Kevin, a 27-year-old bodyguard, stands 6 feet, 6 inchestall and weighs 290 pounds. ... Copyright 1998 Scientific American, Inc.the article reached the de-sired level of unclarity,”he chuckles. After he re-vealed the hoax, Sokal re-calls, he received a lot ofe-mail from “people...

scientific american - 1999 03 - when venus erupted

... being per-formed by Monsanto—often with ad-miring publicity. In December, an up-roar swept Indiawhen rumors cir-culated that Mon-santo had insert-ed a “terminator”gene in its trans-genic ... worked on the small, high-pre-cision screens used in pocket-size com-puters and organizers.Today he supervises a variety of proj-ects. His mantra, printed 12 times con-secutively in his textbook ... “1 0- incident” support package for its prod-ucts). Red Hat Software (www.redhat.com), for instance, offers anything froma $50 Linux CD-ROM to 24-hour tech-nical consultation for Linux-based...

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scientific american - 2000 03 - what computers are learning from them

... 22ANTI GRAVITYC-A-T-T-T-T-T-T-T-TThe fog comes on little cat feet,”wrote Carl Sandburg. The greatpoet and historian may merely havebeen attempting to animate water va-por, but he presciently ... afﬁrmation was short-lived. The back-to-back failures ofthe next two spacecraft, the $125-million Mars Climate Or-PAT RAWLINGSCopyright 2000 Scientific American, Inc.biter and the $165-million Mars ... are keys to control-ling an outbreak and minimizing its de-structiveness. A handheld device con-taining a laboratory-on-a-chip may justbe the answer. The result of break-throughs in biology,...

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scientific american - 2001 03 - sculpting the earth from inside out

... fast-food wrappers to semicon-ductor coatings and airplane hydraulicﬂuid. To its credit, 3M decided to phaseout its ﬂourishing $300-million-a-yearﬂuorochemical business after it discov-ered ... co-author of the XP report, published astudy last year using photolyase, a fasci-nating DNA-repair enzyme, from cyano-bacteria. It directly reverts UV-induceddimers back to normal, us-ing ... Scientiﬁc American March 2001Until recently, a typical atomtrap has consisted of a tem-peramental labyrinth of elec-tric coils, custom-built andthen ﬁne-tuned and maintained by dedi-cated...

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