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This Week in Science
Editor summaries of this week's papers.
Science 20 February 2004: 1101.
Full Text »
Donald Kennedy, Jim Austin, Kirstie Urquhart, and Crispin Taylor
Science 20 February 2004: 1105.
Summary »   PDF »  
Editors' Choice
Highlights of the recent literature.
Science 20 February 2004: 1106.
Full Text »
NetWatch
Best of the Web in science.
Science 20 February 2004: 1115.
Full Text »
 
Science 20 February 2004: 1211.

News of the Week

Jeffrey Mervis
Science 20 February 2004: 1116-1117.
Summary »   Full Text »   PDF »  
David Malakoff
Science 20 February 2004: 1116.
Summary »   Full Text »   PDF »  
Fiona Proffitt
Science 20 February 2004: 1117.
Summary »   Full Text »   PDF »  
Charles Seife
Science 20 February 2004: 1119.
Summary »   Full Text »   PDF »  
Constance Holden
Science 20 February 2004: 1121.
Summary »   Full Text »   PDF »  
Martin Enserink
Science 20 February 2004: 1121.
Summary »   Full Text »   PDF »  
Science 20 February 2004: 1122.
Summary »   Full Text »   PDF »  
Jennifer Couzin
Science 20 February 2004: 1122.
Summary »   Full Text »   PDF »  
Robert F. Service
Science 20 February 2004: 1122.
Summary »   Full Text »   PDF »  
Jeffrey Mervis
Science 20 February 2004: 1123.
Summary »   Full Text »   PDF »  
Jay Withgott
Science 20 February 2004: 1123.
Summary »   Full Text »   PDF »  
ScienceScope
Science 20 February 2004: 1119.
Full Text »
Random Samples
Science 20 February 2004: 1134.
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News Focus

Robert F. Service
Science 20 February 2004: 1124-1127.
Summary »   Full Text »   PDF »  
Gretchen Vogel
Science 20 February 2004: 1128-1131.
Summary »   Full Text »   PDF »  
Marcia L. Triunfol and Jeffrey Mervis
Science 20 February 2004: 1131-1132.
Summary »   Full Text »   PDF »  
Richard A. Kerr
Science 20 February 2004: 1133.
Summary »   Full Text »   PDF »  

Letters

Science 20 February 2004: 1136.
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Christopher S. Palenik and Samuel J. Palenik
Science 20 February 2004: 1136.
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James R. Heath, J. Fraser Stoddart, R. Stanley Williams;, Edwin A. Chandross;, Paul S. Weiss;, and Robert Servic
Science 20 February 2004: 1136-1137.
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Norman E. Borlaug
Science 20 February 2004: 1137-1138.
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Science 20 February 2004: 1138.
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Books et al.

Johan J. Bolhuis
Science 20 February 2004: 1140-1141.
Summary »   Full Text »   PDF »  
Matthew L. Albert
Science 20 February 2004: 1141.
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Science 20 February 2004: 1141.

Policy Forum

Arthur Caplan
Science 20 February 2004: 1142.
Summary »   Full Text »   PDF »  

Perspectives

Edward P. J. van den Heuvel
Science 20 February 2004: 1143-1144.
Summary »   Full Text »   PDF »  
David M. Eagleman
Science 20 February 2004: 1144-1146.
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Bruce C. Garrett
Science 20 February 2004: 1146-1147.
Summary »   Full Text »   PDF »  
Artyom A. Alekseyenko and Mitzi I. Kuroda
Science 20 February 2004: 1148-1149.
Summary »   Full Text »   PDF »  
Eric L. Klett and Shailesh B. Patel
Science 20 February 2004: 1149-1150.
Summary »   Full Text »   PDF »  

Brevia

 
Sandra Pizzarello and Arthur L. Weber
Science 20 February 2004: 1151.
Amino acid enantiomers found in excess in some meteorites can transfer their chirality to sugars, which in turn can reform chiral amino acids. Full Text »   PDF »   Supporting Online Material »  

Research Articles

A. G. Lyne, M. Burgay, M. Kramer, A. Possenti, R.N. Manchester, F. Camilo, M. A. McLaughlin, D. R. Lorimer, N. D'Amico, B. C. Joshi, J. Reynolds, and P. C. C. Freire
Science 20 February 2004: 1153-1157.
Published online 8 January 2004 [DOI: 10.1126/science.1094645] (in Science Express Research Articles)
Two pulsars that orbit each other rapidly, one oscillating with a period of 2.8 seconds and the other every 23 milliseconds, allow observation of relativistic effects. Abstract »   Full Text »   PDF »  
Tania Singer, Ben Seymour, John O'Doherty, Holger Kaube, Raymond J. Dolan, and Chris D. Frith
Science 20 February 2004: 1157-1162.
The subjective experience of pain and the underlying brain activity are enhanced by feeling empathy for another's pain, and diminished by administration of a placebo. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Tor D. Wager, James K. Rilling, Edward E. Smith, Alex Sokolik, Kenneth L. Casey, Richard J. Davidson, Stephen M. Kosslyn, Robert M. Rose, and Jonathan D. Cohen
Science 20 February 2004: 1162-1167.
The subjective experience of pain and the underlying brain activity are enhanced by feeling empathy for another's pain, and diminished by administration of a placebo. Abstract »   Full Text »   PDF »   Supporting Online Material »  

Reports

Henrik Beuther and Peter Schilke
Science 20 February 2004: 1167-1169.
Observation of incipient star formation shows that massive stars, like smaller ones, form by coalescence of distributed gas and dust around a core. Abstract »   Full Text »   PDF »  
Brian C. Dian, Jasper R. Clarkson, and Timothy S. Zwier
Science 20 February 2004: 1169-1173.
The energy needed to twist a metabolically active biomolecule is mapped, showing that its conformation depends upon the rotation angles of two internal bonds. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Magda Claeys, Bim Graham, Gyorgy Vas, Wu Wang, Reinhilde Vermeylen, Vlada Pashynska, Jan Cafmeyer, Pascal Guyon, Meinrat O. Andreae, Paulo Artaxo, and Willy Maenhaut
Science 20 February 2004: 1173-1176.
Newly observed organic compounds in tropical air show that photooxidation of isoprene, commonly released by vegetation, is an important global source of derived organic aerosols. Abstract »   Full Text »   PDF »   Supporting Online Material »  
David P. Schaff and Paul G. Richards
Science 20 February 2004: 1176-1178.
Correlation of seismograms from 14,000 earthquakes in China shows that about 10% consisted of two or more quakes with the same size and dynamics, closely spaced in time. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Myrto Raftopoulou, Sandrine Etienne-Manneville, Annette Self, Sarah Nicholls, and Alan Hall
Science 20 February 2004: 1179-1181.
When a tumor suppressor loses the ability to dephosphorylate itself, cells can migrate freely, possibly explaining metastases. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Györgyi Csankovszki, Patrick McDonel, and Barbara J. Meyer
Science 20 February 2004: 1182-1185.
In C. elegans, discrete regions of the X chromosome recruit a protein complex that first silences nearby genes, after which silencing spreads throughout the chromosome. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Lluis Masip, Jonathan L. Pan, Suranjana Haldar, James E. Penner-Hahn, Matthew P. DeLisa, George Georgiou, James C. A. Bardwell, and Jean-François Collet
Science 20 February 2004: 1185-1189.
Under evolutionary pressure, in a test tube, an E. coli enzyme can acquire an iron-sulfide cluster, and thus the ability to dimerize and catalyze disulfide bond formation. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Michael Faller, Michael Niederweis, and Georg E. Schulz
Science 20 February 2004: 1189-1192.
The low-permeability pore that accounts for the relative insensitivity of tuberculosis bacteria to antibiotics is shaped like a goblet, with the mouth pointing outward. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Masayuki Shimojima, Takayuki Miyazawa, Yasuhiro Ikeda, Elizabeth L. McMonagle, Hayley Haining, Hiroomi Akashi, Yasuhiro Takeuchi, Margaret J. Hosie, and Brian J. Willett
Science 20 February 2004: 1192-1195.
Feline immunodeficiency virus, which causes an AIDS-like disease in cats, infects immune cells via CD134 rather than CD4, the receptor used by HIV. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Ronadip R. Banerjee, Shamina M. Rangwala, Jennifer S. Shapiro, A. Sophie Rich, Ben Rhoades, Yong Qi, Juan Wang, Michael W. Rajala, Alessandro Pocai, Phillipp E. Scherer, Claire M. Steppan, Rexford S. Ahima, Silvana Obici, Luciano Rossetti, and Mitchell A. Lazar
Science 20 February 2004: 1195-1198.
Experiments in mice indicate that the fat-derived hormone resistin may contribute to the increased risk of hyperglycemia and type 2 diabetes associated with obesity. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Joel R. Chamberlain, Ulrike Schwarze, Pei-Rong Wang, Roli K. Hirata, Kurt D. Hankenson, James M. Pace, Robert A. Underwood, Kit M. Song, Michael Sussman, Peter H. Byers, and David W. Russell
Science 20 February 2004: 1198-1201.
Stem cells from patients with a genetic bone disease can be partially repaired by gene targeting, and can generate new bone when implanted into mice. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Scott W. Altmann, Harry R. Davis, Jr., Li-ji Zhu, Xiaorui Yao, Lizbeth M. Hoos, Glen Tetzloff, Sai Prasad N. Iyer, Maureen Maguire, Andrei Golovko, Ming Zeng, Luquan Wang, Nicholas Murgolo, and Michael P. Graziano
Science 20 February 2004: 1201-1204.
The identification of a protein involved in the absorption of dietary cholesterol from the intestine may lead to new cholesterol-lowering therapies. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Jonathan R. Terman and Alex L. Kolodkin
Science 20 February 2004: 1204-1207.
A Drosophila protein links intracellular and extracellular signaling pathways that guide growing nerve axons away from certain regions. Abstract »   Full Text »   PDF »   Supporting Online Material »  
Hakwan C. Lau, Robert D. Rogers, Patrick Haggard, and Richard E. Passingham
Science 20 February 2004: 1208-1210.
Formulation of an intent to move a body part is accompanied by an increase in activity in the connections between the prefrontal cortex and a brain region involved in motor control. Abstract »   Full Text »   PDF »   Supporting Online Material »  
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Science. ISSN 0036-8075 (print), 1095-9203 (online)