scientific american - 1993 07 - telling resonable risks from fools'' chances

scientific american - 1993 07 - telling resonable risks from fools' chances

... PROCESSESCopyright 1993 Scientific American, Inc.JULY 1993 $3.95Polar dinosaurs, which were adapted to the cold and dark, may have outlived their relatives from warmer climates. Telling reasonable risks from ... signiÞcance of the information con-cept to molecular evolution and its tech-nological applications.Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN July 1993 43VIRUSES BELONG to many ... science-based concerns,although he Òducked out of every science classÓ he took.ScienceÕs UnscientiÞc Champion28 SCIENTIFIC AMERICAN July 1993 JOHN MCGRAILCopyright 1993 Scientific American, ...

scientific american - 1993 05 - building soft machines from smart gels

... and depression. Scientific American (ISSN 003 6-8 733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 1001 7-1 111. Copyright © 1993 by Scientific American, Inc. ... Canada 80 0-3 3 3-1 199; other 51 5-2 4 7-7 631. Postmaster: Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, ... Financial OÛcer, R. Vincent Bar-ger; Vice Presidents: Jonathan Piel, John J.Moeling, Jr.8 SCIENTIFIC AMERICAN May 1993 PRINTED IN U.S.A.Copyright 1993 Scientific American, Inc.Mathematics in...

scientific american - 1999 07 - molecules from space

... intowomen-belong-back-in-the-kitchen ar-guments. And popular how-to bookssuch as Men Are from Mars, WomenAre from Venus, with their tenuous tiesto evolutionary biology and their over-simpliﬁcations ... down-loading music from the Internet in theMay issue.News and Analysis Scientific American July 1999 41CYBER VIEWOn-Line U.DAVID SUTERCopyright 1999 Scientific American, Inc.Life’s Far-Flung ... trematode,rather than from the other suspects,pesticides that maymimic deformity-in-ducing retinoids.The minute trema-todes, called Ribe-iroia, burrow intothe hind limb budsof tadpoles, wreak-ing havoc...

scientific american - 2002 07 - sweet medicine - building better drugs from sugars

... Hep-arin’s potency and potential for unwant-ed side effects vary not only from manu-facturer to manufacturer but from onelot to the next, so that it must be empiri-cally checked on a batch-by-batch ... By the Num-bers, October 1999]. White women and mi-norities have been increasingly attracted toS&E doctoral programs, as have African-and Hispanic-Americans, but these two mi-nority groups, ... Labora-tories. These ﬁlaments are photonic crystals, inter-woven layered substances that control light wavesthe way semiconductorscontrol electrons. The sci-entists have made 1.5-mi-cron-wide...

scientific american - 1993 01 - the turbulent birth of the milky way

... 4,650 4,40012-BILLION-YEAR-OLD AGE TRACK15-BILLION-YEAR-OLD AGE TRACKNGC 288NGC 362Copyright 1992 Scientific American, Inc.means that within the halo the only re-maining main-sequence stars ... fate.4110MadagascarÕs LemursIan TattersallCopyright 1993 Scientific American, Inc.Copyright 1993 Scientific American, Inc.Copyright 1993 Scientific American, Inc.and a sprinkling of young blue stars. ... the man.Ó36 SCIENTIFIC AMERICAN January 1993 Copyright 1992 Scientific American, Inc.ate summer of 1987 seemed typi-cal for that time of year in theVirgin Islands. Huge, ßat-bot-tomed cumulus...

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scientific american - 1993 02 - beating resistance in superconductors

... aplomb.34 SCIENTIFIC AMERICAN February 1993 RAYMOND GENDREAUCopyright 1993 Scientific American, Inc.Copyright 1993 Scientific American, Inc.ing to computers. A few scientists, in-cluding Stephen ... Bardeen, Leon N. Coop-er and J. Robert SchrieÝer developed SCIENTIFIC AMERICAN February 1993 49Copyright 1993 Scientific American, Inc.50 SCIENTIFIC AMERICAN February 1993 the theory that ... SciDex™, SCI-ENTIFIC AMERICAN, 415 Madison Ave-nue, New York, N.Y. 1001 7-1 111, or fax(212) 35 5-0 408.Photocopying rights are hereby grant-ed by Scientific American, Inc., to li-braries and...

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

... 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 1993 hree ... F. Dunker and Basile G. RabbatCopyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN March 1993 67Copyright 1993 Scientific American, Inc.MARCH 1993 $3.95Light rays bent by the intense ... 1962.36 SCIENTIFIC AMERICAN March 1993 JASON GOLTZCopyright 1993 Scientific American, Inc.at the same time asking a great num-ber of questions.ÓAfter graduating from Oregon Agri-cultural...

scientific american - 1993 04 - controlling the quantum jitters of atoms

... patchy asthe calico cat herself. ÑJohn Rennie30 SCIENTIFIC AMERICAN April 1993 Copyright 1993 Scientific American, Inc.32 SCIENTIFIC AMERICAN April 1993 If atoms of hydrogen could be cooledto ... isde-excited, and the cavity contains a photon (center). The atomand the cavity continually exchange energy. SCIENTIFIC AMERICAN April 1993 57Copyright 1993 Scientific American, Inc.April 1993 ... issues.42 SCIENTIFIC AMERICAN April 1993 ROBERT PROCHNOWCopyright 1993 Scientific American, Inc.should be appointed science adviser, toreßect the fact that biology is supplant-ing physics...

scientific american - 1993 06 - tuning in the radio signals of ancient galaxies

... genes and behavior.Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN June 1993 45Copyright 1993 Scientific American, Inc.atically measuring subsurface temper-atures for more than three ... June 1993 23Copyright 1993 Scientific American, Inc.26 SCIENTIFIC AMERICAN June 1993 dded to the list of weird phenomena in the quantum world is an effectthat resembles teleportation. For non-Trekkers, ... model.LAURIE GRACENSFSNAPSNAPV-SNARET-SNAREVESICLETARGETORGANELLEFUSINGVESICLECOPYRIGHT 1993 SCIENTIFIC AMERICAN, INC. SCIENTIFIC AMERICAN June 1993 33Rothman and his colleagues initiallyassumed...

scientific american - 1993 08 - can particles move faster than light

... nuclearfuel from civilian reactors and the recy-cling of plutonium.Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN August 1993 45TACTICAL NUCLEAR WARHEAD from the former Soviet Un-ion ... Þnish, the peak of tor-54 SCIENTIFIC AMERICAN August 1993 LOOKING-GLASS CROQUET has Alice hitting rolled-up hedge-hogs, each bearing an uncanny resemblance to a young Wer-ner Heisenberg, toward ... low-enriched uranium derived from about 500 tons of weapon-grade urani-um recovered from surplus Soviet war-heads. This quantity could fuel aboutone eighth of the worldÕs nuclear capac-ity...

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