This Week in Science

Editor summaries of this week's papers.
Science 28 April 2000: 573.
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Editorial:
Opportunity for Agricultural Biotechnology

Richard J. Mahoney
Science 28 April 2000: 615.
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Editors' Choice

Highlights of the recent literature.
Science 28 April 2000: 577.
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NetWatch

Best of the Web in science.
Science 28 April 2000: 571.
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 NEW PRODUCTS

Science 28 April 2000: 687.

 AAAS News & Notes

Science 28 April 2000: 689-690.

News of the Week

CELL BIOLOGY:
In Contrast to Dolly, Cloning Resets Telomere Clock in Cattle

Gretchen Vogel
Science 28 April 2000: 586-587.
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BIOMEDICAL POLICY:
NIH Nomination on Hold for This Year

Eliot Marshall
Science 28 April 2000: 587.
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NATIONAL ACADEMIES:
Task Force Tinkers With Research Council

Andrew Lawler
Science 28 April 2000: 587-589.
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GLOBAL WARMING:
Draft Report Affirms Human Influence

Richard A. Kerr
Science 28 April 2000: 589-590.
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SOUTH AFRICA:
AIDS Researchers Decry Mbeki's Views on HIV

Jon Cohen
Science 28 April 2000: 590-591.
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PHYSICS:
Heat Flow Runs Into Quantum Limit

Adrian Cho
Science 28 April 2000: 591-592.
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ENDANGERED SPECIES:
CITES Puts Off Plan to Hasten Shipments

Wendy Williams
Science 28 April 2000: 592.
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PHYSICS:
Relativity Passes a Tough Cosmic Test

Govert Schilling
Science 28 April 2000: 593.
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ASTRONOMY:
Milky Way Looks Like Big Kid on the Block

Govert Schilling
Science 28 April 2000: 593-595.
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ASTROPHYSICS:
BOOMERANG Returns With Surprising News

Charles Seife
Science 28 April 2000: 595.
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ScienceScope

Science 28 April 2000: 589.
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Random Samples

Science 28 April 2000: 607.
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News Focus

BIOMEDICAL POLICY:
NIH, Under Pressure, Boosts Minority Health Research

Laura Helmuth
Science 28 April 2000: 596-597.
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PROFILE:
Working in the Hot Zone: Galveston's Microbe Hunters

Martin Enserink
Science 28 April 2000: 598-600.
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NATIONAL SCIENCE FOUNDATION:
Information Technology Takes a Different Tack

David Malakoff
Science 28 April 2000: 600-601.
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NUCLEAR WASTE DISPOSAL:
Science and Policy Clash at Yucca Mountain

Richard A. Kerr
Science 28 April 2000: 602.
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ASTROBIOLOGY SCIENCE CONFERENCE:
The Science of Astrobiology Takes Shape

Robert Irion
Science 28 April 2000: 603-605.
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Letters

This Week's Letters

Science 28 April 2000: 617.
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 Eligibility for CSEM Scholarships

Norman L. Fortenberry
Science 28 April 2000: 617.
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 Support for Congolese Conservationists

Andrew Plumptre, Terese Hart, Amy Vedder, and John Robinson
Science 28 April 2000: 617.
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 BIOPAT Does Not Trade in Names

C. Bätke, G. Haszprunar, J. Köhler, C. Naumann, H. K. Schminke, and M. Türkay
Science 28 April 2000: 617.
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 Metabolic Analysis in Drug Discovery

María Luz Cárdenas, Athel Cornish-Bowden;, and Jürgen Drews
Science 28 April 2000: 617.
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 Planetary Solids Older than Earth

Donald D. Clayton; and David J. Stevenson
Science 28 April 2000: 617.
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 CORRECTIONS AND CLARIFICATIONS

Science 28 April 2000: 617.
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Books et al.

COGNITIVE SCIENCE:
If You Build It, Will It Know?

Arthur B. Markman
Science 28 April 2000: 624-625.
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ASTROBIOLOGY:
All Alone After All?

Christopher P. McKay
Science 28 April 2000: 625.
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 Browsings

Science 28 April 2000: 625.
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 Books Received

Science 28 April 2000: 625.

Policy Forum

COMMUNICATIONS:
Wiring Up the Island State

Leo Wee Hin Tan and R. Subramaniam
Science 28 April 2000: 621-623.
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Perspectives

EARTH HISTORY:
Enhanced: Sulfate Clues for the Early History of Atmospheric Oxygen

Adina Paytan
Science 28 April 2000: 626-627.
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GENE THERAPY:
The Best of Times, the Worst of Times

W. French Anderson
Science 28 April 2000: 627-629.
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POLYMER PHYSICS:
Prospects for the Polymer Nanoengineer

Sumit Mazumdar
Science 28 April 2000: 630-631.
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NEUROBIOLOGY:
Of Flies and Mice

Valina L. Dawson
Science 28 April 2000: 631-632.
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STRUCTURAL BIOLOGY:
Light at the End of the Channel

Joan Weliky Conaway and Ronald C. Conaway
Science 28 April 2000: 632-633.
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Research Articles

Carrier-Envelope Phase Control of Femtosecond Mode-Locked Lasers and Direct Optical Frequency Synthesis

David J. Jones, Scott A. Diddams, Jinendra K. Ranka, Andrew Stentz, Robert S. Windeler, John L. Hall, and Steven T. Cundiff
Science 28 April 2000: 635-639.
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Architecture of RNA Polymerase II and Implications for the Transcription Mechanism

Patrick Cramer, David A. Bushnell, Jianhua Fu, Averell L. Gnatt, Barbara Maier-Davis, Nancy E. Thompson, Richard R. Burgess, Aled M. Edwards, Peter R. David, and Roger D. Kornberg
Science 28 April 2000: 640-649.
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Reports

Windows Through the Dusty Disks Surrounding the Youngest Low-Mass Protostellar Objects

J. Cernicharo, A. Noriega-Crespo, D. Cesarsky, B. Lefloch, E. González-Alfonso, F. Najarro, E. Dartois, and S. Cabrit
Science 28 April 2000: 649-652.
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Control of Energy Transfer in Oriented Conjugated Polymer-Mesoporous Silica Composites

Thuc-Quyen Nguyen, Junjun Wu, Vinh Doan, Benjamin J. Schwartz, and Sarah H. Tolbert
Science 28 April 2000: 652-656.
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A Superconducting Field-Effect Switch

J. H. Schön, Ch. Kloc, R. C. Haddon, and B. Batlogg
Science 28 April 2000: 656-658.
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The Archean Sulfur Cycle and the Early History of Atmospheric Oxygen

Donald E. Canfield, Kirsten S. Habicht, and Bo Thamdrup
Science 28 April 2000: 658-661.
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Heightened Odds of Large Earthquakes Near Istanbul: An Interaction-Based Probability Calculation

Tom Parsons, Shinji Toda, Ross S. Stein, Aykut Barka, and James H. Dieterich
Science 28 April 2000: 661-665.
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Extension of Cell Life-Span and Telomere Length in Animals Cloned from Senescent Somatic Cells

Robert P. Lanza, Jose B. Cibelli, Catherine Blackwell, Vincent J. Cristofalo, Mary Kay Francis, Gabriela M. Baerlocher, Jennifer Mak, Michael Schertzer, Elizabeth A. Chavez, Nancy Sawyer, Peter M. Lansdorp, and Michael D. West
Science 28 April 2000: 665-669.
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Gene Therapy of Human Severe Combined Immunodeficiency (SCID)-X1 Disease

Marina Cavazzana-Calvo, Salima Hacein-Bey, Geneviève de Saint Basile, Fabian Gross, Eric Yvon, Patrick Nusbaum, Françoise Selz, Christophe Hue, Stéphanie Certain, Jean-Laurent Casanova, Philippe Bousso, Françoise Le Deist, and Alain Fischer
Science 28 April 2000: 669-672.
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Localization of a Short-Term Memory in Drosophila

T. Zars, M. Fischer, R. Schulz, and M. Heisenberg
Science 28 April 2000: 672-675.
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Control of Homeostasis of CD8⁺ Memory T Cells by Opposing Cytokines

Chia Chi Ku, Masaaki Murakami, Akemi Sakamoto, John Kappler, and Philippa Marrack
Science 28 April 2000: 675-678.
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Location of a Major Susceptibility Locus for Familial Schizophrenia on Chromosome 1q21-q22

Linda M. Brzustowicz, Kathleen A. Hodgkinson, Eva W. C. Chow, William G. Honer, and Anne S. Bassett
Science 28 April 2000: 678-682.
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Resetting Central and Peripheral Circadian Oscillators in Transgenic Rats

Shin Yamazaki, Rika Numano, Michikazu Abe, Akiko Hida, Ri-ichi Takahashi, Masatsugu Ueda, Gene D. Block, Yoshiyuki Sakaki, Michael Menaker, and Hajime Tei
Science 28 April 2000: 682-685.
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