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Science, New Series, Vol. 277, No. 5325, Jul. 25, 1997


Previous Issue: New Series, Vol. 277, No. 5324, Jul. 18, 1997
Next Issue: New Series, Vol. 277, No. 5326, Aug. 1, 1997


Front Matter (19 pp.)
Editorial: The Scientific Underpinning of Policy, p. 457
Gro Harlem Brundtland


Letters
"Snowballs" from Space?, p. 459
Catherine Pilachowski; Nalin Samarasinha; Beatrice Mueller
The Purpose of Glycolysis, pp. 459-460
Steven Sparks
Sickle Cell Anemia Research and a Recombinant DNA Technique, pp. 460-462
Andrzej Stasiak; Stephen C. West; Edward H. Egelman; Eric B. Kmiec
Synergistic Effect of Environmental Estrogens: Report Withdrawn, pp. 462-463
John A. McLachlan


Corrections and Clarifications: Hyperplasia of Lymphatic Vessels in VEGF-C Transgenic Mice, p. 463
Corrections and Clarifications: Acquiring Language, p. 463
Corrections and Clarifications: Microbiology's Scarred Revolutionary, p. 463
ScienceScope, p. 465
Jocelyn Kaiser


News and Comment
Showdown Over Clean Air Science, pp. 466-469
Jocelyn Kaiser
NIH Leads Research Gains as Congress Picks Up Pace, pp. 470-471
Andrew Lawler; Eliot Marshall; Jeffrey Mervis; Jocelyn Kaiser
Chimp Retirement Plan Proposed, p. 471
Wade Roush
European Parliament Backs New Biopatent Guidelines, p. 472
Nigel Williams
Academy Seeks Government Help to Fight Openness Law, p. 473
Andrew Lawler


Research News
High-Speed Materials Design, pp. 474-475
Robert F. Service
Biologists Cut Reductionist Approach Down to Size, pp. 476-477
Nigel Williams
Model Explains Internet 'Storms', p. 477
Charles Seife
Gram-Positive Bacterium Sequenced, p. 478
Nigel Williams
Meteorite Grains Trace Wandering Stars, p. 478
David Ehrenstein
SOHO Probes the Sun's Turbulent Neighborhood, p. 479
Alexander Hellemans
How Jet-Lag Hormone Does Double Duty in the Brain, p. 480
Marcia Barinaga
Quantum Spookiness Wins, Einstein Loses in Photon Test, p. 481
Andrew Watson


Random Samples, p. 483
Constance Holden


Human-Dominated Ecosystems
[Introduction], p. 485
Richard Gallagher; Betsy Carpenter


News
Extinction on the High Seas, pp. 486-488
David Malakoff
'No-Take' Zones Spark Fisheries Debate, pp. 489-491
Karen F. Schmidt
Brighter Prospects for the World's Coral Reefs?, pp. 491-493
Elizabeth Pennisi

Human Domination of Earth's Ecosystems, pp. 494-499
Peter M. Vitousek; Harold A. Mooney; Jane Lubchenco; Jerry M. Melillo
Biotic Control Over the Functioning of Ecosystems, pp. 500-504
F. Stuart Chapin III; Brian H. Walker; Richard J. Hobbs; David U. Hooper; John H. Lawton; Osvaldo E. Sala; David Tilman
Agricultural Intensification and Ecosystem Properties, pp. 504-509
P. A. Matson; W. J. Parton; A. G. Power; M. J. Swift
The Management of Fisheries and Marine Ecosystems, pp. 509-515
Louis W. Botsford; Juan Carlos Castilla; Charles H. Peterson
Hopes for the Future: Restoration Ecology and Conservation Biology, pp. 515-522
Andy P. Dobson; A. D. Bradshaw; A. J. M. Baker
Forests as Human-Dominated Ecosystems, pp. 522-525
Ian R. Noble; Rodolfo Dirzo


Book Reviews
A Paradigm in Conservation Biology, pp. 527-528
Metapopulation Biology. Ecology, Genetics, and Evolution.
Ilkka Hanski; Michael R. Gilpin
Metapopulations and Wildlife Conservation.
Dale R. McCullough
Review author[s]: Peter F. Brussard
Assessing Assessments, pp. 528-529
How Science Takes Stock. A History of Meta-Analysis.
Morton Hunt
Review author[s]: John C. Bailar III


Perspectives
High Gains for Polymer Dynamic Holography, pp. 530-531
Dana Z. Anderson
Proinsulin C-Peptide-Biological Activity?, pp. 531-532
Donald F. Steiner; Arthur H. Rubenstein
Nuclide Production by Cosmic Rays During the Last Ice Age, pp. 532-533
Edouard Bard
Ptdlns(3,4,5)P3 Gets Its Message Across, p. 534
Brian A. Hemmings


Reports
Social Dilemmas and Internet Congestion, pp. 535-537
Bernardo A. Huberman; Rajan M. Lukose
Chlorine-36 in Fossil Rat Urine: An Archive of Cosmogenic Nuclide Deposition During the Past 40,000 Years, pp. 538-541
Mitchell A. Plummer; Fred M. Phillips; June Fabryka-Martin; H. J. Turin; Peter E. Wigand; Pankaj Sharma
Evidence for a Large-Scale Reorganization of Early Cambrian Continental Masses by Inertial Interchange True Polar Wander, pp. 541-545
Joseph L. Kirschvink; Robert L. Ripperdan; David A. Evans
Large Enhancement of Magnetoresistance in TI2Mn2O7: Pyrochlore Versus Perovskite, pp. 546-549
A. P. Ramirez; M. A. Subramanian
Spontaneous Oscillation and Self-Pumped Phase Conjugation in a Photorefractive Polymer Optical Amplifier, pp. 549-552
A. Grunnet-Jepsen; C. L. Thompson; W. E. Moerner
Formation of a Silicate L3 Phase with Continuously Adjustable Pore Sizes, pp. 552-556
K. M. McGrath; D. M. Dabbs; N. Yao; I. A. Aksay; S. M. Gruner
A Di-Acidic Signal Required for Selective Export from the Endoplasmic Reticulum, pp. 556-558
Noriyuki Nishimura; William E. Balch
Bcl-2: Prolonging Life in a Transgenic Mouse Model of Familial Amyotrophic Lateral Sclerosis, pp. 559-562
Vladimir Kostic; Vernice Jackson-Lewis; Fabienne de Bilbao; Michel Dubois-Dauphin; Serge Przedborski
Prevention of Vascular and Neural Dysfunction in Diabetic Rats by C-Peptide, pp. 563-566
Y. Ido; A. Vindigni; K. Chang; L. Stramm; R. Chance; W. F. Heath; R. D. DiMarchi; E. Di Cera; J. R. Williamson
Dual Role of Phosphatidylinositol-3,4,5-trisphosphate in the Activation of Protein Kinase B, pp. 567-570
David Stokoe; Leonard R. Stephens; Terry Copeland; Piers R. J. Gaffney; Colin B. Reese; Gavin F. Painter; Andrew B. Holmes; Frank McCormick; Phillip T. Hawkins
Transmission of Hepatitis C by Intrahepatic Inoculation with Transcribed RNA, pp. 570-574
Alexander A. Kolykhalov; Eugene V. Agapov; Keril J. Blight; Kathleen Mihalik; Stephen M. Feinstone; Charles M. Rice
Mitosis in Living Budding Yeast: Anaphase A But No Metaphase Plate, pp. 574-578
Aaron F. Straight; Wallace F. Marshall; John W. Sedat; Andrew W. Murray


AAAS News and Notes, pp. 581-582
S. L. Byrand

Back Matter (26 pp.)

Previous Issue: New Series, Vol. 277, No. 5324, Jul. 18, 1997
Next Issue: New Series, Vol. 277, No. 5326, Aug. 1, 1997



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