This Week in Science

Editor summaries of this week's papers.
Science 4 December 1998: 1781.
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Editorial:
Passionate Science

The 150th Essay Committee
Science 4 December 1998: 1821.
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NetWatch

Best of the Web in science.
Science 4 December 1998: 1779.
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 NEW PRODUCTS

Science 4 December 1998: 1919.

News of the Week

HIV EPIDEMIOLOGY:
On World AIDS Day, a Shadow Looms Over Southern Africa

Michael Balter
Science 4 December 1998: 1790-1791.
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HIV EPIDEMIOLOGY:
Kick-Starting the AIDS Vaccine Effort

Michael Balter
Science 4 December 1998: 1791.
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ECOLOGY:
Songbirds Stressed in Winter Grounds

Bernice Wuethrich
Science 4 December 1998: 1791-1794.
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X-RAYS:
Tabletop Laser Packs a Punch

Alexander Hellemans
Science 4 December 1998: 1794.
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NEUROBIOLOGY:
Steadying Influence for Neurons Identified

Marcia Barinaga
Science 4 December 1998: 1794-1795.
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EVOLUTION:
Heat Shock Protein Mutes Genetic Changes

Elizabeth Pennisi
Science 4 December 1998: 1796.
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CAREER TRAINING:
Visa Bill Creates NSF Scholarships

Jeffrey Mervis
Science 4 December 1998: 1796-1797.
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NEUROBIOLOGY:
Drug May Suppress the Craving for Nicotine

Ingrid Wickelgren
Science 4 December 1998: 1797-1799.
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AIDS RESEARCH:
New Czar Aims to Sharpen France's Effort

Michael Balter
Science 4 December 1998: 1799.
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ScienceScope

Science 4 December 1998: 1793.
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Random Samples

Science 4 December 1998: 1811.
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News Focus

SCIENCE AND SCHOOLS:
Mixed Grades for NSF's Bold Reform of Statewide Education

Jeffrey Mervis
Science 4 December 1998: 1800-1805.
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SCIENCE AND SCHOOLS:
Puerto Rico Builds a Pyramid of Success

Jeffrey Mervis
Science 4 December 1998: 1801.
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SCIENCE AND SCHOOLS:
Urban Districts Grab the Spotlight

Jeffrey Mervis
Science 4 December 1998: 1802.
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SCIENCE AND SCHOOLS:
In New York, the Pieces Didn't Add Up

Jeffrey Mervis
Science 4 December 1998: 1804.
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ASTRONOMY:
Starbirth, Gamma Blast Hint at Active Early Universe

James Glanz
Science 4 December 1998: 1806.
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GEOLOGICAL SOCIETY OF AMERICA MEETING:
Geologists Take a Trip to the Red Planet

Richard A. Kerr
Science 4 December 1998: 1807-1809.
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Letters

This Week's Letters

Science 4 December 1998: 1823.
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 Freedom of Information Requests

William H. Goldwater; and Michael Gough
Science 4 December 1998: 1823.
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 Science, Advocacy, and Credibility

Warren S. Wooster
Science 4 December 1998: 1823.
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 Human Cloning

Claire Nader and Stuart A. Newman
Science 4 December 1998: 1823.
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 Lead Regulation

Lynn R. Goldman; and Bruce P. Lanphear
Science 4 December 1998: 1823.
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 CORRECTIONS AND CLARIFICATIONS

Science 4 December 1998: 1823.
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Books et al.

ASTRONOMY:
Seeking Planetary Systems

Jack J. Lissauer
Science 4 December 1998: 1832.
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VIROLOGY:
Small Sources of Great Affliction

Robin A. Weiss
Science 4 December 1998: 1832-1833.
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 Browsings

Science 4 December 1998: 1833.
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SOFTWARE:
Igneous Petrology

Glenn A. Gaetani
Science 4 December 1998: 1834-1835.
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Policy Forum

SCIENCE EDUCATION:
What Can We Really Learn from TIMSS?

William H. Schmidt and Curtis C. McKnight
Science 4 December 1998: 1830-1831.
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Perspectives

MOLECULAR BIOLOGY:
Just the Facts of Chromatin Transcription

Sam John and Jerry L. Workman
Science 4 December 1998: 1836-1837.
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BIOMEDICINE:
The Enigmas of Kaposi's Sarcoma

Robert C. Gallo
Science 4 December 1998: 1837-1839.
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RADIOISOTOPE DATING:
Enhanced: Absolute Ages Aren't Exactly

Paul R. Renne, Daniel B. Karner, and Kenneth R. Ludwig
Science 4 December 1998: 1840-1841.
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OPTICAL PHYSICS:
Mirror on the Wall: You're Omnidirectional After All?

Jonathan P. Dowling
Science 4 December 1998: 1841-1842.
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BIOCHEMISTRY:
Biological Hydrogen Production: Not So Elementary

Michael W. W. Adams and Edward I. Stiefel
Science 4 December 1998: 1842-1843.
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AMERSHAM PHARMACIA BIOTECH & SCIENCE PRIZE:
The Rotary Enzyme of the Cell: The Rotation of F1-ATPase

Hiroyuki Noji
Science 4 December 1998: 1844-1845.
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1998 Grand Prize Winner

Science 4 December 1998: 1845.
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Association Affairs

 ESSAYS ON SCIENCE AND SOCIETY:
Why must scientists become more ethically sensitive than they used to be?

John Ziman
Science 4 December 1998: 1813-1814.
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Review

Consciousness and Complexity

Giulio Tononi and Gerald M. Edelman
Science 4 December 1998: 1846-1851.
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Research Articles

X-ray Crystal Structure of the Fe-Only Hydrogenase (CpI) from Clostridium pasteurianum to 1.8 Angstrom Resolution

John W. Peters, William N. Lanzilotta, Brian J. Lemon, and Lance C. Seefeldt
Science 4 December 1998: 1853-1858.
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A 25,000-Year Tropical Climate History from Bolivian Ice Cores

L. G. Thompson, M. E. Davis, E. Mosley-Thompson, T. A. Sowers, K. A. Henderson, V. S. Zagorodnov, P.-N. Lin, V. N. Mikhalenko, R. K. Campen, J. F. Bolzan, J. Cole-Dai, and B. Francou
Science 4 December 1998: 1858-1864.
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Reports

⁵³Mn-⁵³Cr Dating of Fayalite Formation in the CV3 Chondrite Mokoia: Evidence for Asteroidal Alteration

Ian D. Hutcheon, Alexander N. Krot, Klaus Keil, Douglas L. Phinney, and Edward R. D. Scott
Science 4 December 1998: 1865-1867.
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Magnetic Microstructure of Magnetotactic Bacteria by Electron Holography

Rafal E. Dunin-Borkowski, Martha R. McCartney, Richard B. Frankel, Dennis A. Bazylinski, Mihály Pósfai, and Peter R. Buseck
Science 4 December 1998: 1868-1870.
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Climate and Vegetation History of the Midcontinent from 75 to 25 ka: A Speleothem Record from Crevice Cave, Missouri, USA

Jeffrey A. Dorale, R. Lawrence Edwards, Emi Ito, and Luis A. González
Science 4 December 1998: 1871-1874.
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Oxygen Isotope Exchange Between Refractory Inclusion in Allende and Solar Nebula Gas

Hisayoshi Yurimoto, Motoo Ito, and Hiroshi Nagasawa
Science 4 December 1998: 1874-1877.
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Single-Molecule Enzymatic Dynamics

H. Peter Lu, Luying Xun, and X. Sunney Xie
Science 4 December 1998: 1877-1882.
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Frequency Tuning of Basilar Membrane and Auditory Nerve Fibers in the Same Cochleae

S. Shyamla Narayan, Andrei N. Temchin, Alberto Recio, and Mario A. Ruggero
Science 4 December 1998: 1882-1884.
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Linking Winter and Summer Events in a Migratory Bird by Using Stable-Carbon Isotopes

Peter P. Marra, Keith A. Hobson, and Richard T. Holmes
Science 4 December 1998: 1884-1886.
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Coupling of Mitosis to the Completion of S Phase Through Cdc34-Mediated Degradation of Wee1

W. Matthew Michael and John Newport
Science 4 December 1998: 1886-1889.
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KCNQ2 and KCNQ3 Potassium Channel Subunits: Molecular Correlates of the M-Channel

Hong-Sheng Wang, Zongming Pan, Wenmei Shi, Barry S. Brown, Randy S. Wymore, Ira S. Cohen, Jane E. Dixon, and David McKinnon
Science 4 December 1998: 1890-1893.
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Linkage of ATM to Cell Cycle Regulation by the Chk2 Protein Kinase

Shuhei Matsuoka, Mingxia Huang, and Stephen J. Elledge
Science 4 December 1998: 1893-1897.
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dMi-2, a Hunchback-Interacting Protein That Functions in Polycomb Repression

Johannes Kehle, Dirk Beuchle, Susanne Treuheit, Bea Christen, James A. Kennison, Mariann Bienz, and Jürg Müller
Science 4 December 1998: 1897-1900.
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Requirement of RSF and FACT for Transcription of Chromatin Templates in Vitro

Gary LeRoy, George Orphanides, William S. Lane, and Danny Reinberg
Science 4 December 1998: 1900-1904.
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Patterning of Cortical Efferent Projections by Semaphorin-Neuropilin Interactions

Franck Polleux, Roman J. Giger, David D. Ginty, Alex L. Kolodkin, and Anirvan Ghosh
Science 4 December 1998: 1904-1906.
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Genetic Acceleration of AIDS Progression by a Promoter Variant of CCR5

Maureen P. Martin, Michael Dean, Michael W. Smith, Cheryl Winkler, Bernard Gerrard, Nelson L. Michael, Benhur Lee, Robert W. Doms, Joseph Margolick, Susan Buchbinder, James J. Goedert, Thomas R. O'Brien, Margaret W. Hilgartner, David Vlahov, Stephen J. O'Brien, and Mary Carrington
Science 4 December 1998: 1907-1911.
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Role of MEKK1 in Cell Survival and Activation of JNK and ERK Pathways Defined by Targeted Gene Disruption

Toshiaki Yujiri, Susan Sather, Gary R. Fanger, and Gary L. Johnson
Science 4 December 1998: 1911-1914.
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Mutation-Specific Functional Impairments in Distinct Tau Isoforms of Hereditary FTDP-17

Ming Hong, Victoria Zhukareva, Vanessa Vogelsberg-Ragaglia, Zbigniew Wszolek, Lee Reed, Bruce I. Miller, Dan H. Geschwind, Thomas D. Bird, Daniel McKeel, Alison Goate, John C. Morris, Kirk C. Wilhelmsen, Gerard D. Schellenberg, John Q. Trojanowski, and Virginia M.-Y. Lee
Science 4 December 1998: 1914-1917.
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Technical Comments

 Interpreting Late Precambrian Microfossils

Yun Zhang, Xunlai Yuan, Leiming Yin;, Chia-Wei Li, Jun-Yuan Chen, and Tzu-En Hua;
Science 4 December 1998: 1783.
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