Stardust at Comet Wild 2

Sweet Dreams Are Made of These

Linda Rowan
Science 18 June 2004: 1760.
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Perspectives

PERSPECTIVE:
Not a Rubble Pile?

Harold A. Weaver
Science 18 June 2004: 1760-1762.
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PERSPECTIVE:
Cometary Dust Unveiled

Anny-Chantal Levasseur-Regourd
Science 18 June 2004: 1762-1763.
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Research Articles

Surface of Young Jupiter Family Comet 81P/Wild 2: View from the Stardust Spacecraft

Donald E. Brownlee, Friedrich Horz, Ray L. Newburn, Michael Zolensky, Thomas C. Duxbury, Scott Sandford, Zdenek Sekanina, Peter Tsou, Martha S. Hanner, Benton C. Clark, Simon F. Green, and Jochen Kissel
Science 18 June 2004: 1764-1769.
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Modeling the Nucleus and Jets of Comet 81P/Wild 2 Based on the Stardust Encounter Data

Zdenek Sekanina, Donald E. Brownlee, Thanasis E. Economou, Anthony J. Tuzzolino, and Simon F. Green
Science 18 June 2004: 1769-1774.
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Reports

The Cometary and Interstellar Dust Analyzer at Comet 81P/Wild 2

J. Kissel, F. R. Krueger, J. Silén, and B. C. Clark
Science 18 June 2004: 1774-1776.
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Dust Measurements in the Coma of Comet 81P/Wild 2 by the Dust Flux Monitor Instrument

Anthony J. Tuzzolino, Thanasis E. Economou, Ben C. Clark, Peter Tsou, Donald E. Brownlee, Simon F. Green, J. A. M. McDonnell, Neil McBride, and Melusine T. S. H. Colwell
Science 18 June 2004: 1776-1780.
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Great Expectations On the Job Front

Jeffrey Mervis and Constance Holden
Science 18 June 2004: 1829.
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Long Hours Aside, Respondents Say Jobs Offer 'as Much Fun as You Can Have'

Constance Holden
Science 18 June 2004: 1830-1837.
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This Week in Science

Editor summaries of this week's papers.
Science 18 June 2004: 1713.
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Editorial:
Managing Your Own Lab

Thomas R. Cech and Enriqueta Bond
Science 18 June 2004: 1717.
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Editors' Choice

Highlights of the recent literature.
Science 18 June 2004: 1719.
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NetWatch

Best of the Web in science.
Science 18 June 2004: 1725.
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 New Products

Science 18 June 2004: 1827.
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News of the Week

BIODEFENSE RESEARCH:
Accidental Anthrax Shipment Spurs Debate Over Safety

Martin Enserink and Jocelyn Kaiser
Science 18 June 2004: 1726-1727.
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BIOSECURITY:
Researchers Urge U.S. to Keep SARS Off Select Agent List

Martin Enserink
Science 18 June 2004: 1726.
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PLANETARY SCIENCE:
Dirty Old Ice Ball Found at Saturn

Richard A. Kerr
Science 18 June 2004: 1727.
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MOLECULAR BIOLOGY:
NIH Gears Up for Chemical Genomics

Jocelyn Kaiser
Science 18 June 2004: 1728.
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AIDS VACCINES:
G8 Leaders Endorse Global Effort

Gretchen Vogel
Science 18 June 2004: 1728.
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THERAPEUTIC CLONING:
Japan Faces Decision as Moratorium Expires

Dennis Normile
Science 18 June 2004: 1729.
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TOXICOLOGY:
Exposure to Flame Retardants On the Rise

Paul Webster
Science 18 June 2004: 1730.
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U.S. SCIENCE POLICY:
Cicerone Picked to Lead National Academy

Jeffrey Mervis
Science 18 June 2004: 1730.
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RESEARCH ON AGING:
Gene Links Calorie Deprivation and Long Life in Rodents

Jennifer Couzin
Science 18 June 2004: 1731.
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ScienceScope

Science 18 June 2004: 1729.
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Random Samples

Science 18 June 2004: 1742.
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News Focus

NANOTOXICOLOGY:
Nanotechnology Grows Up

Robert F. Service
Science 18 June 2004: 1732-1734.
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THE REHABILITATION AND RESEARCH CENTER FOR TORTURE VICTIMS PROFILE:
Laying Abominable Ghosts to Rest

John Bohannon
Science 18 June 2004: 1735-1736.
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EVOLUTIONARY BIOLOGY:
Changing a Fish's Bony Armor in the Wink of a Gene

Elizabeth Pennisi
Science 18 June 2004: 1736.
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AMERICAN ASTRONOMICAL SOCIETY MEETING:
Astronomers Warm Up to the Infrared Universe

Robert Irion
Science 18 June 2004: 1740.
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AMERICAN ASTRONOMICAL SOCIETY MEETING:
As Inconstant as the Northern Star

Robert Irion
Science 18 June 2004: 1740-1741.
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AMERICAN ASTRONOMICAL SOCIETY MEETING:
Hubble Plan Earns Cautious Reaction

Robert Irion
Science 18 June 2004: 1741.
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AMERICAN ASTRONOMICAL SOCIETY MEETING:
Snapshots From the Meeting

Robert Irion
Science 18 June 2004: 1741.
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Letters

This Week's Letters

Science 18 June 2004: 1744.
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 High- and Low-Tech Malaria Control

Stephen M. Smith;, Janet Hemingway, and Alister Craig
Science 18 June 2004: 1744.
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 More on Research in France

Marc P. Girard; and Jean-Luc Darlix
Science 18 June 2004: 1745.
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 Hungarian Priority in Network Theory

Tibor Braun
Science 18 June 2004: 1745.
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 CORRECTIONS AND CLARIFICATIONS

Science 18 June 2004: 1746.
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Books et al.

HISTORY OF SCIENCE:
Tragedy Averted

Manfred D. Laubichler
Science 18 June 2004: 1747-1748.
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GEOSCIENCE:
Guidebook for a Grand Tour

Kevin Burke
Science 18 June 2004: 1748.
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 Books Received

Science 18 June 2004: 1748.

Policy Forum

BIOTECHNOLOGY:
Why Are People Hostile to Biotechnologies?

Massimiano Bucchi and Federico Neresini
Science 18 June 2004: 1749.
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Perspectives

NEUROSCIENCE:
Vesicular Glutamate Transporter--Shooting Blanks

Kim Schuske and Erik M. Jorgensen
Science 18 June 2004: 1750-1752.
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PHYSICS:
Cooking a Two-Dimensional Electron Gas with Microwaves

Adam C. Durst and Steven M. Girvin
Science 18 June 2004: 1752-1753.
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NEUROSCIENCE:
Enhanced: Matchmaking

Nathaniel D. Daw and Peter Dayan
Science 18 June 2004: 1753-1754.
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Review

The Hedgehog Response Network: Sensors, Switches, and Routers

Lawrence Lum and Philip A. Beachy
Science 18 June 2004: 1755-1759.
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Brevia

 African Origins of the Domestic Donkey

Albano Beja-Pereira, Phillip R. England, Nuno Ferrand, Steve Jordan, Amel O. Bakhiet, Mohammed A. Abdalla, Marjan Mashkour, Jordi Jordana, Pierre Taberlet, and Gordon Luikart
Science 18 June 2004: 1781.
Donkeys were domesticated twice, both times in northeastern Africa. Full Text »|   PDF »|   Supporting Online Material »|  

Research Article

Matching Behavior and the Representation of Value in the Parietal Cortex

Leo P. Sugrue, Greg S. Corrado, and William T. Newsome
Science 18 June 2004: 1782-1787.
Certain brain neurons code for the comparative perceived value of paired alternatives between which monkeys choose when performing a task. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Reports

Selective Growth of Metal Tips onto Semiconductor Quantum Rods and Tetrapods

Taleb Mokari, Eli Rothenberg, Inna Popov, Ronny Costi, and Uri Banin
Science 18 June 2004: 1787-1790.
Gold tips, grown selectively in a solution onto semiconducting nanorods, change the optical properties of the rods and can act as conducting contacts in a circuit. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Ultrahigh-Resolution Spin-Echo Measurement of Surface Potential Energy Landscapes

Andrew P. Jardine, Shechar Dworski, Peter Fouquet, Gil Alexandrowicz, David J. Riley, Gabriel Y. H. Lee, John Ellis, and William Allison
Science 18 June 2004: 1790-1793.
The use of spin-polarized helium beams for imaging a surface by scattering improves the resolution of the image by three orders of magnitude. Abstract »|   Full Text »|   PDF »|  

Hsp104 Catalyzes Formation and Elimination of Self-Replicating Sup35 Prion Conformers

James Shorter and Susan Lindquist
Science 18 June 2004: 1793-1797.
Published online 20 May 2004 [DOI: 10.1126/science.1098007] (in Science Express Reports)
A chaperone protein can either help to generate or to clear yeast prions, which behave similarly to the abnormally folded proteins that cause mad cow and related human diseases. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Dynamics of Single mRNPs in Nuclei of Living Cells

Yaron Shav-Tal, Xavier Darzacq, Shailesh M. Shenoy, Dahlene Fusco, Susan M. Janicki, David L. Spector, and Robert H. Singer
Science 18 June 2004: 1797-1800.
After it is synthesized, messenger RNA moves through the nucleus by diffusion rather than by an energy dependent transport mechanism. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Protein Kinase G from Pathogenic Mycobacteria Promotes Survival Within Macrophages

Anne Walburger, Anil Koul, Giorgio Ferrari, Liem Nguyen, Cristina Prescianotto-Baschong, Kris Huygen, Bert Klebl, Charles Thompson, Gerald Bacher, and Jean Pieters
Science 18 June 2004: 1800-1804.
Published online 20 May 2004 [DOI: 10.1126/science.1099384] (in Science Express Reports)
After infecting host cells, the mycobacterium responsible for tuberculosis secretes an enzyme that prevents its fusion with the host’s organelle that normally digests invaders. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Salmonella Modulates Vesicular Traffic by Altering Phosphoinositide Metabolism

Lorraine D. Hernandez, Karsten Hueffer, Markus R. Wenk, and Jorge E. Galán
Science 18 June 2004: 1805-1807.
Salmonella, the bacterium that causes food poisoning, modifies host cell lipids immediately after invasion to establish a protected niche in which to replicate. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Promotion of B Cell Immune Responses via an Alum-Induced Myeloid Cell Population

Michael B. Jordan, David M. Mills, John Kappler, Philippa Marrack, and John C. Cambier
Science 18 June 2004: 1808-1810.
Before immune cells can make appropriate antibodies in the animal, they are primed by a type of spleen cell that secretes a cytokine. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Control of Stochasticity in Eukaryotic Gene Expression

Jonathan M. Raser and Erin K. O'Shea
Science 18 June 2004: 1811-1814.
Published online 27 May 2004 [DOI: 10.1126/science.1098641] (in Science Express Reports)
Gene expression shows varying amounts of random fluctuations because of different kinetic balances between promoter activation, deactivation, and transcription. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Vesicular Glutamate Transporters 1 and 2 Target to Functionally Distinct Synaptic Release Sites

Robert T. Fremeau, Jr., Kaiwen Kam, Tayyaba Qureshi, Juliette Johnson, David R. Copenhagen, Jon Storm-Mathisen, Farrukh A. Chaudhry, Roger A. Nicoll, and Robert H. Edwards
Science 18 June 2004: 1815-1819.
Published online 29 April 2004 [DOI: 10.1126/science.1097468] (in Science Express Reports)
The two forms of the transporter that loads neurotransmitter into vesicles act in different areas of the adult brain but are both used within individual developing neurons at different synaptic release sites. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Long-Term Memory Requires PolyADP-ribosylation

Malka Cohen-Armon, Leonid Visochek, Ayelet Katzoff, David Levitan, Abraham J. Susswein, Rodika Klein, Mireille Valbrun, and James H. Schwartz
Science 18 June 2004: 1820-1822.
An enzyme important for gene transcription is required for several forms of long-term, but not short-term, memory in the invertebrate sea slug Aplysia. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Involvement of Mammalian Mus81 in Genome Integrity and Tumor Suppression

John Peter McPherson, Bénédicte Lemmers, Richard Chahwan, Ashwin Pamidi, Eva Migon, Elzbieta Matysiak-Zablocki, Mary Ellen Moynahan, Jeroen Essers, Katsuhiro Hanada, Anuradha Poonepalli, Otto Sanchez-Sweatman, Rama Khokha, Roland Kanaar, Maria Jasin, M. Prakash Hande, and Razqallah Hakem
Science 18 June 2004: 1822-1826.
A gene homologous to one that guides DNA replication and repair in yeast is a tumor suppressor in mice; when either or both copies are defective, lymphomas and other cancers develop. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Technical Comments

 Comment on "Impacts of Fine Root Turnover on Forest NPP and Soil C Sequestration Potential"

Yiqi Luo, Luther White, and Dafeng Hui
Science 18 June 2004: 1745.
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 Response to Comment on "Impacts of Fine Root Turnover on Forest NPP and Soil C Sequestration Potential"

Roser Matamala, Miquel A. Gonzàlez-Meler, Julie D. Jastrow, Richard J. Norby, and William H. Schlesinger
Science 18 June 2004: 1745.
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