Toward a Hydrogen Economy

Not So Simple

Robert Coontz and Brooks Hanson
Science 13 August 2004: 957.
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News

The Hydrogen Backlash

Robert F. Service
Science 13 August 2004: 958-961.
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The Carbon Conundrum

Robert F. Service
Science 13 August 2004: 962-963.
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Choosing a CO₂ Separation Technology

Robert F. Service
Science 13 August 2004: 963.
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Fire and ICE: Revving Up for H₂

Adrian Cho
Science 13 August 2004: 964-965.
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Will the Future Dawn in the North?

Gretchen Vogel
Science 13 August 2004: 966-967.
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Can the Developing World Skip Petroleum?

Gretchen Vogel
Science 13 August 2004: 967.
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Viewpoints

Sustainable Hydrogen Production

John A. Turner
Science 13 August 2004: 972-974.
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Hybrid Cars Now, Fuel Cell Cars Later

Nurettin Demirdöven and John Deutch
Science 13 August 2004: 974-976.
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Review

Stabilization Wedges: Solving the Climate Problem for the Next 50 Years with Current Technologies

S. Pacala and R. Socolow
Science 13 August 2004: 968-972.
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This Week in Science

Editor summaries of this week's papers.
Science 13 August 2004: 913.
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Editorial:
The Hydrogen Solution

Donald Kennedy
Science 13 August 2004: 917.
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Editors' Choice

Highlights of the recent literature.
Science 13 August 2004: 919.
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NetWatch

Best of the Web in science.
Science 13 August 2004: 925.
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 New Products

Science 13 August 2004: 1023.
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News of the Week

MARINE EXPLORATION:
NSF Takes the Plunge on a Bigger, Faster Research Sub

David Malakoff
Science 13 August 2004: 926-927.
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PATENTS:
NIH Declines to March In on Pricing AIDS Drug

David Malakoff
Science 13 August 2004: 926.
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SPACE SCIENCE:
NASA Climate Satellite Wins Reprieve

Andrew Lawler
Science 13 August 2004: 927.
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CANCER RESEARCH:
Proposed Leukemia Stem Cell Encounters a Blast of Scrutiny

Jennifer Couzin
Science 13 August 2004: 929.
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PALEONTOLOGY:
Bone Study Shows T. rex Bulked Up With Massive Growth Spurt

Erik Stokstad
Science 13 August 2004: 930-931.
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PLANETARY SCIENCE:
Los Alamos's Woes Spread to Pluto Mission

Andrew Lawler
Science 13 August 2004: 930.
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ASTROPHYSICS:
Do Black Hole Jets Do the Twist?

Robert Irion
Science 13 August 2004: 931.
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ScienceScope

Science 13 August 2004: 929.
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Random Samples

Science 13 August 2004: 940.
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News Focus

CLIMATE CHANGE:
Three Degrees of Consensus

Richard A. Kerr
Science 13 August 2004: 932-934.
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QUANTUM INFORMATION THEORY:
A General Surrenders the Field, But Black Hole Battle Rages On

Charles Seife
Science 13 August 2004: 934-936.
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PROFILE: DAVE ROSGEN:
The River Doctor

David Malakoff
Science 13 August 2004: 937-939.
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Letters

This Week's Letters

Science 13 August 2004: 943.
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 Virgin Rainforests and Conservation

Clive Hambler;, Bruce M. Beehler, Todd C. Stevenson, Michelle Brown;, K. J. Willis, L. Gillson, and T. M. Brncic
Science 13 August 2004: 943-944.
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 Stem Cell Research in Korea

Sang-yong Song;, Woo-Suk Hwang, and Shin Yong Moon
Science 13 August 2004: 944-945.
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 Changing Scientific Publishing

Martin C. Raff, Charles F. Stevens, Keith Roberts, Carla J Shatz, Keith Roberts, Carla J Shatz, and William T. Newsome
Science 13 August 2004: 945-946.
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 CORRECTIONS AND CLARIFICATIONS

Science 13 August 2004: 946.
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Books et al.

ENVIRONMENT:
Our Once and Future Fate

Ann Kinzig
Science 13 August 2004: 947.
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MATERIALS SCIENCE:
The Soft Sector in Physics

Gerard C. L. Wong
Science 13 August 2004: 948.
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 Books Received

Science 13 August 2004: 948.

Policy Forum

ETHICS:
Human Health Research Ethics

E. Silbergeld, S. Lerman, and L. Hushka
Science 13 August 2004: 949.
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Perspectives

PHYSICS:
Half Full or Half Empty?

J. P. Eisenstein
Science 13 August 2004: 950-952.
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NEUROSCIENCE:
Addicted Rats

Terry E. Robinson
Science 13 August 2004: 951-953.
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CLIMATE SCIENCE:
Enhanced: Already the Day After Tomorrow?

Bogi Hansen, Svein Østerhus, Detlef Quadfasel, and William Turrell
Science 13 August 2004: 953-954.
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NEUROSCIENCE:
NAD to the Rescue

Antonio Bedalov and Julian A. Simon
Science 13 August 2004: 954-955.
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Brevia

A Compound from Smoke That Promotes Seed Germination

Gavin R. Flematti, Emilio L. Ghisalberti, Kingsley W. Dixon, and Robert D. Trengove
Science 13 August 2004: 977.
Published online 8 July 2004 [DOI: 10.1126/science.1099944] (in Science Express Brevia)
Smoke from burning plants contains a butenolide that promotes germination of the next generation of seeds, even in trace amounts. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Reports

Simulations of Jets Driven by Black Hole Rotation

Vladimir Semenov, Sergey Dyadechkin, and Brian Punsly
Science 13 August 2004: 978-980.
A magnetohydrodynamic model indicates that rotation of a black hole provides the energy that feeds jets of plasma emanating from the poles. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Localization of Fractionally Charged Quasi-Particles

Jens Martin, Shahal Ilani, Basile Verdene, Jurgen Smet, Vladimir Umansky, Diana Mahalu, Dieter Schuh, Gerhard Abstreiter, and Amir Yacoby
Science 13 August 2004: 980-983.
Imaging localized charges directly confirms the fractional quantum Hall effect, in which fractions of an electron charge produce a characteristic stepped resistance in some materials under a magnetic field. Abstract »|   Full Text »|   PDF »|  

DNA-Functionalized Nanotube Membranes with Single-Base Mismatch Selectivity

Punit Kohli, C. Chad Harrell, Zehui Cao, Rahela Gasparac, Weihong Tan, and Charles R. Martin
Science 13 August 2004: 984-986.
Arrays of gold nanotubes with a DNA molecule in each pore selectively separate complementary sequences from DNAs that differ by just one nucleotide. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Sample Dimensions Influence Strength and Crystal Plasticity

Michael D. Uchic, Dennis M. Dimiduk, Jeffrey N. Florando, and William D. Nix
Science 13 August 2004: 986-989.
Deformation phenomena that occur on the nanometer scale are shown to be influenced by the micronscale dimensions of nickel alloy. Abstract »|   Full Text »|   PDF »|  

Discovery of Mass Anomalies on Ganymede

John D. Anderson, Gerald Schubert, Robert A. Jacobson, Eunice L. Lau, William B. Moore, and Jennifer L. Palguta
Science 13 August 2004: 989-991.
Gravity data imply that beneath its icy crust, Jupiter's moon Ganymede has a region with denser rocks at high latitudes and one with less dense rocks at low latitudes. Abstract »|   Full Text »|   PDF »|  

Probing the Accumulation History of the Voluminous Toba Magma

Jorge A. Vazquez and Mary R. Reid
Science 13 August 2004: 991-994.
Dates on single zoned minerals show that the huge Toba volcanic eruption, 74,000 years ago, arose from several magmas that coalesced starting about 35,000 years earlier. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

More Intense, More Frequent, and Longer Lasting Heat Waves in the 21st Century

Gerald A. Meehl and Claudia Tebaldi
Science 13 August 2004: 994-997.
A climate model suggests that, as a result of greenhouse gas–induced climate change, Europe and North America can expect more longer and stronger heat waves. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Discovery of Symbiotic Nitrogen-Fixing Cyanobacteria in Corals

Michael P. Lesser, Charles H. Mazel, Maxim Y. Gorbunov, and Paul G. Falkowski
Science 13 August 2004: 997-1000.
Corals that obtain carbon from symbiotic dinoflagellates within their cells also benefit from symbiotic cyanobacteria that fix nitrogen. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Modulation of Hematopoietic Stem Cell Homing and Engraftment by CD26

Kent W. Christopherson, II, Giao Hangoc, Charlie R. Mantel, and Hal E. Broxmeyer
Science 13 August 2004: 1000-1003.
The success of bone marrow transplants can be improved by inactivating a peptidase on the surface of the donor cells. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Natural Antibiotic Function of a Human Gastric Mucin Against Helicobacter pylori Infection

Masatomo Kawakubo, Yuki Ito, Yukie Okimura, Motohiro Kobayashi, Kyoko Sakura, Susumu Kasama, Michiko N. Fukuda, Minoru Fukuda, Tsutomu Katsuyama, and Jun Nakayama
Science 13 August 2004: 1003-1006.
The cells lining the stomach produce a carbohydrate that protects from infection by Helicobacter pylori, a bacterium that can cause ulcers and cancer. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Optical Sectioning Deep Inside Live Embryos by Selective Plane Illumination Microscopy

Jan Huisken, Jim Swoger, Filippo Del Bene, Joachim Wittbrodt, and Ernst H. K. Stelzer
Science 13 August 2004: 1007-1009.
Excitation of fluorescent molecules with a single plane of light allows collection of three-dimensional images rapidly enough to visualize a heart beating within a fish embryo. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Increased Nuclear NAD Biosynthesis and SIRT1 Activation Prevent Axonal Degeneration

Toshiyuki Araki, Yo Sasaki, and Jeffrey Milbrandt
Science 13 August 2004: 1010-1013.
A common cellular metabolite or one of its protein binding partners can slow neuronal death, suggesting a therapeutic approach to neurodegeneration. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Evidence for Addiction-like Behavior in the Rat

Véronique Deroche-Gamonet, David Belin, and Pier Vincenzo Piazza
Science 13 August 2004: 1014-1017.
Rats that repeatedly consume cocaine develop compulsive drug-seeking behaviors similar to those of addicted humans. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Drug Seeking Becomes Compulsive After Prolonged Cocaine Self-Administration

Louk J. M. J. Vanderschuren and Barry J. Everitt
Science 13 August 2004: 1017-1019.
Rats that repeatedly consume cocaine develop compulsive drug-seeking behaviors similar to those of addicted humans. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|  

Visual Pattern Recognition in Drosophila Is Invariant for Retinal Position

Shiming Tang, Reinhard Wolf, Shuping Xu, and Martin Heisenberg
Science 13 August 2004: 1020-1022.
Flies have a surprisingly complex visual processing system that, like ours, recognizes patterns as the sum of individual features independent of the viewer's position in space. Abstract »|   Full Text »|   PDF »|   Supporting Online Material »|