This Week in Science

Editor summaries of this week's papers.
Science 29 August 2003: 1154.
|Full Text »

Editorial:
Europe, Science, and Unity

Donald Kennedy
Science 29 August 2003: 1157.
Summary »|   PDF »|  

Editors' Choice

Highlights of the recent literature.
Science 29 August 2003: 1159.
|Full Text »

NetWatch

Best of the Web in science.
Science 29 August 2003: 1163.
|Full Text »

 AAAS News & Notes

Science 29 August 2003: 1194-1195.

 NEW PRODUCTS

Science 29 August 2003: 1250.

News of the Week

ENERGY RESEARCH:
Heated Debate Ahead on U.S. Energy Agenda

David Malakoff
Science 29 August 2003: 1164.
Summary »|   Full Text »|   PDF »|  

SCIENCE POLICY:
Feds Ask a $100 Billion Question

Jeffrey Mervis
Science 29 August 2003: 1164.
Summary »|   Full Text »|   PDF »|  

LONGEVITY RESEARCH:
In Vino Vitalis? Compounds Activate Life-Extending Genes

Stephen S. Hall
Science 29 August 2003: 1165.
Summary »|   Full Text »|   PDF »|  

WILDLIFE CONSERVATION:
U.N. Joins Russia's Fight to Save Western Pacific Salmon

Paul Webster
Science 29 August 2003: 1167.
Summary »|   Full Text »|   PDF »|  

PALEONTOLOGY:
Ancient Weapon of Mass Destruction: Methane Gas?

Erik Stokstad
Science 29 August 2003: 1168.
Summary »|   Full Text »|   PDF »|  

BIODEFENSE FACILITIES:
Suit Targets Two DOE Labs

David Malakoff
Science 29 August 2003: 1168-1169.
Summary »|   Full Text »|   PDF »|  

SPACETIME:
Einstein 1, Quantum Gravity 0

Adrian Cho
Science 29 August 2003: 1169-1171.
Summary »|   Full Text »|   PDF »|  

BIOTECHNOLOGY:
Yeast Engineered to Produce Sugared Human Proteins

Robert F. Service
Science 29 August 2003: 1171.
Summary »|   Full Text »|   PDF »|  

ScienceScope

Science 29 August 2003: 1167.
|Full Text »

Random Samples

Science 29 August 2003: 1180.
|Full Text »

News Focus

GUNTHER VON HAGENS:
Anatomy's Full Monty

John Bohannon
Science 29 August 2003: 1172-1175.
Summary »|   Full Text »|   PDF »|  

GUNTHER VON HAGENS:
Plastination: Putting a Stopper in Death

John Bohannon
Science 29 August 2003: 1173.
Summary »|   Full Text »|   PDF »|  

SOLAR PHYSICS:
A Space Weather Aerie in the Caucasus?

Richard Stone
Science 29 August 2003: 1175-1176.
Summary »|   Full Text »|   PDF »|  

GENOMICS:
Sequencers Examine Priorities

Jennifer Couzin
Science 29 August 2003: 1176-1177.
Summary »|   Full Text »|   PDF »|  

PALEOANTHROPOLOGY:
Africans Begin to Make Their Mark in Human-Origins Research

Ann Gibbons
Science 29 August 2003: 1178-1179.
Summary »|   Full Text »|   PDF »|  

Letters

This Week's Letters

Science 29 August 2003: 1182.
Summary »|   PDF »|  

 Strengthening VA Clinical Research

Frank A. Lederle;, Claude M. Chemtob;, and Anthony J. Principi
Science 29 August 2003: 1182-1183.
Full Text »|   PDF »|  

 Defining Entanglement

Antoni Wójcik;, A. J. Berkley, H. Xu, R. C. Ramos, M. A. Gubrud, F. W. Strauch, P. R. Johnson, J. R. Anderson, A. J. Dragt, C. J. Lobb, and F. C. Wellstood
Science 29 August 2003: 1183-1184.
Full Text »|   PDF »|  

 Fabulous Footwear?

Nancy Oestreich Lurie
Science 29 August 2003: 1184.
Full Text »|   PDF »|  

 CORRECTIONS AND CLARIFICATIONS

Science 29 August 2003: 1184.
Full Text »|   PDF »|  

Books et al.

AGING:
A Demographic View of Limits on Life-Span

Laurence D. Mueller
Science 29 August 2003: 1185.
Summary »|   Full Text »|   PDF »|  

MATHEMATICS:
To Prove the Optimal Packing

Doron Zeilberger
Science 29 August 2003: 1186.
Summary »|   Full Text »|   PDF »|  

 Browsings

Science 29 August 2003: 1186.
Full Text »|   PDF »|  

 Books Received

Science 29 August 2003: 1186.

Policy Forum

ENVIRONMENTAL ECONOMICS:
False Alarm over Environmental False Alarms

S. W. Pacala, E. Bulte, J. A. List, and S. A. Levin
Science 29 August 2003: 1187-1188.
Summary »|   Full Text »|   PDF »|   Supporting Online Material »|  

Perspectives

EVOLUTION:
Enhanced: Sex, Sunflowers, and Speciation

Richard J. Abbott
Science 29 August 2003: 1189-1190.
Summary »|   Full Text »|   PDF »|  

GEOPHYSICS:
Mantle Flow Revisited

Misha Bystricky
Science 29 August 2003: 1190-1191.
Summary »|   Full Text »|   PDF »|  

MATHEMATICS:
Quick and Dirty Refereeing?

Madhu Sudan
Science 29 August 2003: 1191-1192.
Summary »|   Full Text »|   PDF »|  

MATHEMATICS:
Chaos: Useful at Last?

Jaroslav Stark and Kate Hardy
Science 29 August 2003: 1192-1193.
Summary »|   Full Text »|   PDF »|  

Review

A Perspective on Enzyme Catalysis

Stephen J. Benkovic and Sharon Hammes-Schiffer
Science 29 August 2003: 1196-1202.
Abstract »|   Full Text »|   PDF »|  

Brevia

 The Chemical Form of Mercury in Fish

Hugh H. Harris, Ingrid J. Pickering, and Graham N. George
Science 29 August 2003: 1203.
Methylmercury in fish is not found as toxic methylmercury chloride but is bound to an aliphatic thiol in a more benign form. Full Text »|   PDF »|   Supporting Online Material »|  

Research Articles

Polarization-Modulated Smectic Liquid Crystal Phases

D. A. Coleman, J. Fernsler, N. Chattham, M. Nakata, Y. Takanishi, E. Körblova, D. R. Link, R.-F. Shao, W. G. Jang, J. E. Maclennan, O. Mondainn-Monval, C. Boyer, W. Weissflog, G. Pelzl, L.-C. Chien, J. Zasadzinski, J. Watanabe, D. M. Walba, H. Takezoe, and N. A. Clark
Science 29 August 2003: 1204-1211.
Banana-shaped organic molecules can be assembled into novel large-scale structures with undulating stripes and patterns, in which packing and dipole ordering alternate. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Major Ecological Transitions in Wild Sunflowers Facilitated by Hybridization

Loren H. Rieseberg, Olivier Raymond, David M. Rosenthal, Zhao Lai, Kevin Livingstone, Takuya Nakazato, Jennifer L. Durphy, Andrea E. Schwarzbach, Lisa A. Donovan, and Christian Lexer
Science 29 August 2003: 1211-1216.
Published online 7 August 2003 [DOI: 10.1126/science.1086949] (in Science Express Research Articles)
Hybridization--often thought to be an evolutionary dead end--has led to the formation of three species of sunflower. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Reports

Galaxy Disruption in a Halo of Dark Matter

Duncan A. Forbes, Michael A. Beasley, Kenji Bekki, Jean P. Brodie, and Jay Strader
Science 29 August 2003: 1217-1219.
Published online 7 August 2003 [DOI: 10.1126/science.1089237] (in Science Express Reports)
A dwarf galaxy is being torn apart by the dark matter halo of a much larger galaxy, a process that may explain the stream of stars in our own galaxy. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Helical Conformation of Alkanes in a Hydrophobic Cavitand

Laurent Trembleau and Julius Rebek, Jr.
Science 29 August 2003: 1219-1220.
Cavitands (organic receptors containing a large charged pocket) grab and wind up the long hydrophobic tails of surfactant molecules despite the induced strain. Abstract »|   Full Text »|   PDF »|  

Measurement of Single-Molecule Resistance by Repeated Formation of Molecular Junctions

Bingqian Xu and Nongjian J. Tao
Science 29 August 2003: 1221-1223.
Repeatedly breaking contact between an organic molecule on a gold surface and the gold tip of a scanning probe provides discrete measurements of conductivity changes. Abstract »|   Full Text »|   PDF »|  

Synthesis of Carbenes Through Substitution Reactions at a Carbene Center

Nathalie Merceron-Saffon, Antoine Baceiredo, Heinz Gornitzka, and Guy Bertrand
Science 29 August 2003: 1223-1225.
A variety of stable carbene compounds, which have an electron-deficient carbon atom, can now be synthesized and potentially used as catalysts. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Rapid Manufacturing of Aluminum Components

T. B. Sercombe and G. B. Schaffer
Science 29 August 2003: 1225-1227.
An easily made aluminum nitride skeleton can be filled with a second aluminum alloy to form aluminum parts of various sizes and shapes. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Melt Segregation and Strain Partitioning: Implications for Seismic Anisotropy and Mantle Flow

B. K. Holtzman, D. L. Kohlstedt, M. E. Zimmerman, F. Heidelbach, T. Hiraga, and J. Hustoft
Science 29 August 2003: 1227-1230.
Deformation of olivine, the main mineral of the upper mantle, and its melt produce an unexpected grain orientation, affecting how mantle flow patterns are inferred from seismology. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Cleavage of Arabidopsis PBS1 by a Bacterial Type III Effector

Feng Shao, Catherine Golstein, Jules Ade, Mark Stoutemyer, Jack E. Dixon, and Roger W. Innes
Science 29 August 2003: 1230-1233.
A plant's defense system is triggered when a bacterial pathogen injects a protease into the plant's cells, which acts on a host protein to set the plant's protective response in motion. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Single-Molecule Measurement of Protein Folding Kinetics

Everett A. Lipman, Benjamin Schuler, Olgica Bakajin, and William A. Eaton
Science 29 August 2003: 1233-1235.
A laminar-flow mixer that rapidly dilutes proteins into solutions with different properties allows observation of single protein molecules as they fold. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Single-Molecule Kinetics of Exonuclease Reveal Base Dependence and Dynamic Disorder

Antoine M. van Oijen, Paul C. Blainey, Donald J. Crampton, Charles C. Richardson, Tom Ellenberger, and X. Sunney Xie
Science 29 August 2003: 1235-1238.
The enzyme λ exonuclease digests DNA at a rate that depends on the DNA sequence and its own dynamic structure. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Conserved Role of nanos Proteins in Germ Cell Development

Masayuki Tsuda, Yumiko Sasaoka, Makoto Kiso, Kuniya Abe, Seiki Haraguchi, Satoru Kobayashi, and Yumiko Saga
Science 29 August 2003: 1239-1241.
Although the germ cells of vertebrates and invertebrates form by quite different mechanisms, two related proteins are required in mice and fruit flies. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Persistence Without Pathology in Phosphoglycan-Deficient Leishmania major

Gerald F. Späth, Lon-Fey Lye, Hiroaki Segawa, David L. Sacks, Salvatore J. Turco, and Stephen M. Beverley
Science 29 August 2003: 1241-1243.
Mutant malaria parasites without certain surface carbohydrates cannot cause acute symptoms but are not cleared from the host, leading to a persistent form of the infection. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Production of Complex Human Glycoproteins in Yeast

Stephen R. Hamilton, Piotr Bobrowicz, Beata Bobrowicz, Robert C. Davidson, Huijuan Li, Teresa Mitchell, Juergen H. Nett, Sebastian Rausch, Terrance A. Stadheim, Harry Wischnewski, Stefan Wildt, and Tillman U. Gerngross
Science 29 August 2003: 1244-1246.
Yeast cells have been genetically engineered to contain the enzymes necessary to add carbohydrates to human proteins, facilitating glycoprotein manufacture for therapeutic application. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Representation of Action Sequence Boundaries by Macaque Prefrontal Cortical Neurons

Naotaka Fujii and Ann M. Graybiel
Science 29 August 2003: 1246-1249.
Bursts of neural activity in the prefrontal cortex of the brain mark the end of each segment in a series of tasks performed by trained monkeys. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Technical Comments

 Comment on "The Pentacovalent Phosphorus Intermediate of a Phosphoryl Transfer Reaction"

G. Michael Blackburn, Nicholas H. Williams, Steven J. Gamblin, and Stephen J. Smerdon
Science 29 August 2003: 1184.
Full Text »|   PDF »|  

 Response to Comment on "The Pentacovalent Phosphorus Intermediate of a Phosphoryl Transfer Reaction"

Karen N. Allen and Debra Dunaway-Mariano
Science 29 August 2003: 1184.
Full Text »|   PDF »|