This Week in Science

Editor summaries of this week's papers.
Science 12 May 2000: 925.
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Editorial:
Rice, Races, and Riches

Floyd Bloom
Science 12 May 2000: 973.
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Editors' Choice

Highlights of the recent literature.
Science 12 May 2000: 929.
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NetWatch

Best of the Web in science.
Science 12 May 2000: 923.
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 NEW PRODUCTS

Science 12 May 2000: 1077-1078.

News of the Week

SPACE BIOLOGY:
Goldin Shakes Up NASA's Life Sciences Program

Andrew Lawler
Science 12 May 2000: 938-939.
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HUMAN GENOME PROJECT:
Chromosome 21 Done, Phase Two Begun

Elizabeth Pennisi
Science 12 May 2000: 939.
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STRUCTURAL GENOMICS:
Protein Data Justice for All

Robert F. Service
Science 12 May 2000: 939-941.
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GLOBAL WARMING:
Some Coral Bouncing Back From El Niño

Dennis Normile
Science 12 May 2000: 941-942.
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CLIMATE CHANGE:
Panel Estimates Possible Carbon 'Sinks'

Jocelyn Kaiser
Science 12 May 2000: 942-943.
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CIRCADIAN RHYTHMS:
Two Feedback Loops Run Mammalian Clock

Marcia Barinaga
Science 12 May 2000: 943-944.
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PHYSICS:
A Slow Carousel Ride Gauges Gravity's Pull

Charles Seife
Science 12 May 2000: 944.
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PALEOCLIMATOLOGY:
Viable But Variable Ancient El Niño Spied

Richard A. Kerr
Science 12 May 2000: 945.
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HUMAN GENOME:
Mapping a Subtext in Our Genetic Book

Michael Hagmann
Science 12 May 2000: 945-947.
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ASTRONOMY:
Astronomers Detect More Missing Matter

Adrian Cho
Science 12 May 2000: 947.
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ScienceScope

Science 12 May 2000: 941.
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Random Samples

Science 12 May 2000: 959.
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News Focus

PALEOANTHROPOLOGY:
A Glimpse of Humans' First Journey Out of Africa

Michael Balter and Ann Gibbons
Science 12 May 2000: 948-950.
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BIOMEDICINE:
Gene Therapy on Trial

Eliot Marshall
Science 12 May 2000: 951-957.
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BIOMEDICINE:
Improving Gene Therapy's Tool Kit

Eliot Marshall
Science 12 May 2000: 953.
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BIOMEDICINE:
Gene Therapy's Web of Corporate Connections

Eliot Marshall
Science 12 May 2000: 954-955.
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SCIENTIFIC COMMUNITY:
National Academy of Sciences Elects New Members

Science 12 May 2000: 957.
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Letters

This Week's Letters

Science 12 May 2000: 975.
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 Dialog on Depression

Bruce Charlton; and Raj Persaud
Science 12 May 2000: 975.
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 The "Snowball Earth" and Precambrian Climate

Gregory S. Jenkins
Science 12 May 2000: 975-976.
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 Induced Damage in the Developing Brain

Robert W. Montgomery;, Abhay Sharma, Sushil Kumar;, C. Ikonomidou, P. Bittigau, M. J. Ishimaru, D. F. Wozniak, C. Koch, K. Genz, M. T. Price, V. Stefovska, F. Hörster, T. Tenkova, K. Dikranian, and J. Olney
Science 12 May 2000: 976-978.
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Books et al.

ECONOMIC HISTORY:
Geography as Destiny?

Graeme Lang
Science 12 May 2000: 982-983.
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CONSERVATION BIOLOGY:
Preserving Diversity the U.S. Way

Hugh Possingham
Science 12 May 2000: 983.
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 Books Received

Science 12 May 2000: 983.

Policy Forum

RISK MANAGEMENT:
Science and the Precautionary Principle

Kenneth R. Foster, Paolo Vecchia, and Michael H. Repacholi
Science 12 May 2000: 979-981.
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Perspectives

IMMUNOLOGY:
A Touch of Antibody Class

Janet Stavnezer
Science 12 May 2000: 984-985.
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ECOLOGY:
Enhanced: Black-Footed Ferret Recovery

Andy Dobson and Annarie Lyles
Science 12 May 2000: 985-988.
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GEOCHEMISTRY:
Earth's History Trapped in the Mantle

Ichiro Kaneoka
Science 12 May 2000: 988-989.
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ATMOSPHERIC SCIENCE:
Absorbing Phenomena

Stephen E. Schwartz and Peter R. Buseck
Science 12 May 2000: 989-990.
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Pathways of Discovery

Designing a New Material World

Gregory B. Olson
Science 12 May 2000: 993-998.
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Materials by Design

Gregory B. Olson
Science 12 May 2000: 995.
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Virtualizing Materials to Create Real Ones

Gregory B. Olson
Science 12 May 2000: 997.
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Research Articles

Interacting Molecular Loops in the Mammalian Circadian Clock

Lauren P. Shearman, Sathyanarayanan Sriram, David R. Weaver, Elizabeth S. Maywood, Ins Chaves, Binhai Zheng, Kazuhiko Kume, Cheng Chi Lee, Gijsbertus T. J. van der Horst, Michael H. Hastings, and Steven M. Reppert
Science 12 May 2000: 1013-1019.
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Earliest Pleistocene Hominid Cranial Remains from Dmanisi, Republic of Georgia: Taxonomy, Geological Setting, and Age

Leo Gabunia, Abesalom Vekua, David Lordkipanidze, Carl C. Swisher, III, Reid Ferring, Antje Justus, Medea Nioradze, Merab Tvalchrelidze, Susan C. Antón, Gerhard Bosinski, Olaf Jöris, Marie-A.-de Lumley, Givi Majsuradze, and Aleksander Mouskhelishvili
Science 12 May 2000: 1019-1025.
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Reports

Separation of Long DNA Molecules in a Microfabricated Entropic Trap Array

J. Han and H. G. Craighead
Science 12 May 2000: 1026-1029.
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Structure of the Hydrated -Al₂O₃ (0001) Surface

Peter J. Eng, Thomas P. Trainor, Gordon E. Brown, Jr., Glenn A. Waychunas, Matthew Newville, Stephen R. Sutton, and Mark L. Rivers
Science 12 May 2000: 1029-1033.
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Rapid Flooding of the Sunda Shelf: A Late-Glacial Sea-Level Record

Till Hanebuth, Karl Stattegger, and Pieter M. Grootes
Science 12 May 2000: 1033-1035.
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The Nature of Pristine Noble Gases in Mantle Plumes

Mario Trieloff, Joachim Kunz, David A. Clague, Darrell Harrison, and Claude J. Allègre
Science 12 May 2000: 1036-1038.
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El Niño-Like Climate Teleconnections in New England During the Late Pleistocene

Tammy M. Rittenour, Julie Brigham-Grette, and Michael E. Mann
Science 12 May 2000: 1039-1042.
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Reduction of Tropical Cloudiness by Soot

A. S. Ackerman, O. B. Toon, D. E. Stevens, A. J. Heymsfield, V. Ramanathan, and E. J. Welton
Science 12 May 2000: 1042-1047.
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N-Cadherin, a Cell Adhesion Molecule Involved in Establishment of Embryonic Left-Right Asymmetry

Martín I. García-Castro, Eva Vielmetter, and Marianne Bronner-Fraser
Science 12 May 2000: 1047-1051.
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Influenza B Virus in Seals

A. D. M. E. Osterhaus, G. F. Rimmelzwaan, B. E. E. Martina, T. M. Bestebroer, and R. A. M. Fouchier
Science 12 May 2000: 1051-1053.
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Noxa, a BH3-Only Member of the Bcl-2 Family and Candidate Mediator of p53-Induced Apoptosis

Eri Oda, Rieko Ohki, Hideki Murasawa, Jiro Nemoto, Tsukasa Shibue, Toshiharu Yamashita, Takashi Tokino, Tadatsugu Taniguchi, and Nobuyuki Tanaka
Science 12 May 2000: 1053-1058.
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Stable RNA/DNA Hybrids in the Mammalian Genome: Inducible Intermediates in Immunoglobulin Class Switch Recombination

Robert B. Tracy, Chih-Lin Hsieh, and Michael R. Lieber
Science 12 May 2000: 1058-1061.
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A High-Affinity Iron Permease Essential for Candida albicans Virulence

Narendrakumar Ramanan and Yue Wang
Science 12 May 2000: 1062-1064.
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Technical Comments

 Northern Hemisphere Sea Ice Extent

Richard E. Moritz, Cecilia M. Bitz;, Konstantin Y. Vinnikov, Alan Robock, Ronald J. Stouffer, John E. Walsh, Claire L. Parkinson, Donald J. Cavalieri, John F. B. Mitchell, Donald Garrett, and Victor F. Zakharov;
Science 12 May 2000: 927.
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