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Previous Issue: New Series, Vol. 248, No. 4963, Jun. 29, 1990
Next Issue: New Series, Vol. 249, No. 4965, Jul. 13, 1990
Front Matter (10 pp.)
Sensors, Computers, and Actuators, p. 9
- Philip H. Abelson
Letters
- The Overhead Question, pp. 10-13
- Paul E. Gray; Steven C. Beering; Robert M. Rosenzweig; Robert Barker; Roger Eldridge; Anthony E. Seigman; Joseph J. Aleo; J. Michael Schurr; Paul D. Boyer; Richard Seebass; Daniel E. Koshland, Jr.
News and Comment
- Science Beyond the Pale, pp. 14-16
- Eliot Marshall
- Researchers Declare Crisis, Seek Funding Solutions, pp. 17-18
- Joseph Palca
- Multidisciplinary Look at a Finite World, pp. 18-19
- Constance Holden
Briefings
- AID Aids AIDS Efforts with New Syringes, p. 20
- David P. Hamilton
- Director Contenders Just Say No to NIH, p. 20
- David P. Hamilton
- How to Save Endangered Species, p. 20
- David P. Hamilton
- Primate Find Surprises Biologists, pp. 20-21
- David P. Hamilton
- Three Mile Island "Turns Around", p. 21
- David P. Hamilton
- Weed Genes, p. 21
- David P. Hamilton
- English Physics Hits the Fat Farm, p. 21
- David P. Hamilton
- Advanced Photons, p. 21
- David P. Hamilton
- The NASA Vegematic, p. 21
- David P. Hamilton
Research News
- Bad News Bacteria, pp. 22-24
- Karen Wright
- Hubble Managers Start to Survey the Damage, p. 25
- M. Mitchell Waldrop
- DORIS Gets a Face-Lift, p. 26
- Richard Sietmann
- Mount Graham Up in the Air, p. 26
- M. Mitchell Waldrop
- Diamond Films Sparkle as They Come to Market, pp. 27-28
- Robert Pool
The CFC-Ozone Issue: Progress on the Development of Alternatives to CFCs, pp. 31-35
- L. E. Manzer
The Z Boson, pp. 36-42
- Michael S. Chanowitz
Research Article
- Evidence that the Head of Kinesin is Sufficient for Force Generation and Motility in Vitro, pp. 42-47
- Joy T. Yang; William M. Saxton; Russell J. Stewart; Elizabeth C. Raff; Lawrence S. B. Goldstein
Reports
- Television Image of a Large Upward Electrical Discharge Above a Thunderstorm System, pp. 48-51
- R. C. Franz; R. J. Nemzek; J. R. Winckler
- Seawater Strontium Isotopic Variations from 2.5 Million Years Ago to the Present, pp. 51-55
- R. C. Capo; D. J. DePaolo
- Synchronous, Alternating, and Phase-Locked Stridulation by a Tropical Katydid, pp. 55-58
- Enrico Sismondo
- The Role of Ocular Muscle Proprioception in Visual Localization of Targets, pp. 58-61
- Gabriel M. Gauthier; Danielle Nommay; Jean-Louis Vercher
- Mediation of Cardioprotection by Transforming Growth Factor-β, pp. 61-64
- Allan M. Lefer; Philip Tsao; Nobuo Aoki; Michael A. Palladino, Jr.
- An Insulin-Stimulated Protein Kinase Similar to Yeast Kinases Involved in Cell Cycle Control, pp. 64-67
- Teri G. Boulton; George D. Yancopoulos; Jill S. Gregory; Clive Slaughter; Carolyn Moomaw; Joan Hsu; Melanie H. Cobb
- Recognition of a Peptide Antigen by Heat Shock-Reactive γδ T Lymphocytes, pp. 67-69
- Willi Born; Lisa Hall; Angela Dallas; Joel Boymel; Thomas Shinnick; Douglas Young; Patrick Brennan; Rebecca O'Brien
- Intercalation Complex of Proflavine with DNA: Structure and Dynamics by Solid-State NMR, pp. 70-72
- Pei Tang; Chi-Long Juang; Gerard S. Harbison
- Site-Specific Cleavage of a Yeast Chromosome by Oligonucleotide-Directed Triple-Helix Formation, pp. 73-75
- Scott A. Strobel; Peter B. Dervan
Inside AAAS, pp. 76-77
Book Reviews
- A Mesoamerican Middle Age, pp. 78-79
- Mesoamerica after the Decline of Teotihuacan, A.D. 700-900.
- Richard A. Diehl; Janet Catherine Berlo
- Tula of the Toltecs. Excavations and Survey.
- Dan M. Healan
- Review author[s]: David Freidel
- Telescopes and Determination, pp. 79-80
- Astronomer by Chance.
- Bernard Lovell
- Review author[s]: John V. Evans
- Changing Galaxies, p. 80
- Evolutionary Phenomena in Galaxies.
- J. E. Beckman; B. E. J. Pagel
- Review author[s]: Virginia Trimble
- Books Received, pp. 80-81
Back Matter (19 pp.)
Previous Issue: New Series, Vol. 248, No. 4963, Jun. 29, 1990
Next Issue: New Series, Vol. 249, No. 4965, Jul. 13, 1990