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Science, New Series, Vol. 271, No. 5252, Feb. 23, 1996


Previous Issue: New Series, Vol. 271, No. 5251, Feb. 16, 1996
Next Issue: New Series, Vol. 271, No. 5253, Mar. 1, 1996


Front Matter (36 pp.)
Editorial: Science and the American Dream, p. 1037
Neal F. Lane


Letters
Superconductivity Researchers, p. 1039
Richard L. Greene
A Prediction of the Bose-Einstein Condensate, pp. 1039-1040
Russell J. Donnelly
Air Quality in Mexico City, pp. 1040-1042
Francisco Guzmán; María E. Ruíz; Elizabeth Vega; Donald R. Blake; F. Sherwood Rowland
Climate Change Consensus, pp. 1042-1043
Michael J. Prather
HIV Viral Load Assay, p. 1043
Cecil H. Fox; Barton F. Haynes


ScienceScope, p. 1045
Jocelyn Kaiser


News and Comment
Big Science is Booming in Japan, pp. 1046-1048
Dennis Normile
Clinton's R&D Achievements Tilt Toward Technology, pp. 1049-1050
Andrew Lawler
MIT Torn by Bitter Dispute Over Missile, pp. 1050-1052
Jock Friedly
Funding Crisis Provokes Street Protests, p. 1052
Andrey Allakhverdov


Research News
Putting Stiffness in Earth's Mantle, pp. 1053-1054
Richard A. Kerr
AAAS Gathering Explores Animals, Aliens, and Atoms, pp. 1055-1056
Robert F. Service; Richard A. Kerr; Lisa Seachrist
Regulating G Protein Signaling, pp. 1056-1058
Wade Roush
New Images Wet Researchers' Appetites, p. 1058
Daniel Clery
A Split-Personality X-ray Beacon Tantalizes Theorists, p. 1059
James Glanz
Analyzing Molecular Structure with Astronomical Speed, p. 1060
Wade Roush


Random Samples, pp. 1061+1063
Constance Holden


Book Reviews
Evolutionary Transitions, p. 1075
Tempo and Mode in Evolution. Genetics and Paleontology 50 Years After Simpson.
Walter M. Fitch; Francisco J. Ayala
Review author[s]: Allan Larson
Phosphorylators, p. 1076
Protein Kinases.
James Robert Woodgett
Review author[s]: James T. Stull
Books Received, p. 1076


Perspectives
Molecular Trees: A New Branch of Chemistry, pp. 1077-1078
Thomas W. Bell
Evolving Catalysts in Real Time, pp. 1078-1079
Mark M. Davis
Delivery of Molecular Medicine to Solid Tumors, pp. 1079-1080
Rakesh K. Jain


The Galvanization of Biology: A Growing Appreciation for the Roles of Zinc, pp. 1081-1085
Jeremy M. Berg; Yigong Shi


Research Article
The Immunological Evolution of Catalysis, pp. 1086-1091
Phillip A. Patten; Nathanael S. Gray; Priscilla L. Yang; Cara B. Marks; Gary J. Wedemayer; J. Jay Boniface; Raymond C. Stevens; Peter G. Schultz


Reports
Drilling and Dating New Jersey Oligocene-Miocene Sequences: Ice Volume, Global Sea Level, and Exxon Records, pp. 1092-1095
Kenneth G. Miller; Gregory S. Mountain
Self-Assembling Dendrimers, pp. 1095-1098
Steven C. Zimmerman; Fanwen Zeng; David E. C. Reichert; Sergei V. Kolotuchin
Re-Os Ages of Group IIA, IIIA, IVA, and IVB Iron Meteorites, pp. 1099-1102
Michael I. Smoliar; Richard J. Walker; John W. Morgan
The Swelling of Clays: Molecular Simulations of the Hydration of Montmorillonite, pp. 1102-1104
S. Karaborni; B. Smit; W. Heidug; J. Urai; E. van Oort
Middle to Late Paleozoic Atmospheric CO2 Levels from Soil Carbonate and Organic Matter, pp. 1105-1107
Claudia I. Mora; Steven G. Driese; Lee Ann Colarusso
Initial Results of Radio Occultation Observations of Earth's Atmosphere Using the Global Positioning System, pp. 1107-1110
E. R. Kursinski; G. A. Hajj; W. I. Bertiger; S. S. Leroy; T. K. Meehan; L. J. Romans; J. T. Schofield; D. J. McCleese; W. G. Melbourne; C. L. Thornton; T. P. Yunck; J. R. Eyre; R. N. Nagatani
Observations of Carbon Monoxide in Comet Hale-Bopp, pp. 1110-1113
David Jewitt; Matthew Senay; Henry Matthews
Imitation of Escherichia coli Aspartate Receptor Signaling in Engineered Dimers of the Cytoplasmic Domain, pp. 1113-1116
Andrea G. Cochran; Peter S. Kim
Heparin Structure and Interactions with Basic Fibroblast Growth Factor, pp. 1116-1120
S. Faham; R. E. Hileman; J. R. Fromm; R. J. Linhardt; D. C. Rees
The p21 RAS Farnesyltransferase a Subunit in TGF-b and Activin Signaling, pp. 1120-1122
Tongwen Wang; Paul D. Danielson; Bi-yu Li; Paresh C. Shah; Stephen D. Kim; Patricia K. Donahoe
Locus Control Region Function and Heterochromatin-Induced Position Effect Variegation, pp. 1123-1125
Richard Festenstein; Mauro Tolaini; Paola Corbella; Clio Mamalaki; Jenny Parrington; Margaret Fox; Antigoni Miliou; Margaret Jones; Dimitris Kioussis
Congenital Jaundice in Rats with a Mutation in a Multidrug Resistance- Associated Protein Gene, pp. 1126-1128
Coen C. Paulusma; Piter J. Bosma; Guido J. R. Zaman; Conny T. M. Bakker; Marlies Otter; George L. Scheffer; Rik J. Scheper; Piet Borst; Ronald P. J. Oude Elferink
IRAK: A Kinase Associated with the Interleukin-1 Receptor, pp. 1128-1131
Zhaodan Cao; William J. Henzel; Xiong Gao


Technical Comments
How Much Solar Radiation do Clouds Absorb?, pp. 1131-1136
Graeme L. Stephens; R. D. Cess; M. H. Zhang; Peter Pilewskie; Francisco P. J. Valero
Interhelical Salt Bridges, Coiled-Coil Stability, and Specificity of Dimerization, pp. 1136-1138
Pierre Lavigne; Frank D. Sönnichsen; Cyril M. Kay; Robert S. Hodges; Kevin J. Lumb; Peter S. Kim


AAAS News and Notes, p. 1149
Diana Parsell

Back Matter (51 pp.)

Previous Issue: New Series, Vol. 271, No. 5251, Feb. 16, 1996
Next Issue: New Series, Vol. 271, No. 5253, Mar. 1, 1996



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