| | Opinion |  |
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| | No way to welcome spring 383
The calculated bad manners towards each other of the two major superpowers may presage better things, as last year, but that is the most optimistic reading of events.
doi:10.1038/320383a0
PDF (273K)
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| | Nuclear virulence 384
Some of the problems of the nuclear industry are illustrated by a book review this week.
doi:10.1038/320384a0
PDF (144K)
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| | Good luck strikes back 384
British astronomers should move their surplus observatory to a university.
doi:10.1038/320384b0
PDF (144K)
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| | News | |
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| | New human retroviruses: One causes AIDS... 385
Robert Walgate
doi:10.1038/320385a0
PDF (132K)
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| | AIDS research: ... and the other does not 385
Joseph Palca
doi:10.1038/320385b0
PDF (132K)
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| | NSF tests mini-supercomputer 385
Karen Wright
doi:10.1038/320385c0
PDF (132K)
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| | US patents: Doubts on secrecy order 386
Tim Beardsley
doi:10.1038/320386a0
PDF (136K)
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| | Mars mission: UK Strategic Defence Initiative contracts 386
doi:10.1038/320386b0
PDF (136K)
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| | NASA selects contractors 386
Karen Wright
doi:10.1038/320386c0
PDF (136K)
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| | US research: Smithsonian center to close 387
Joseph Palca
doi:10.1038/320387a0
PDF (131K)
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| | US engineering: Five more centres named 387
Tim Beardsley
doi:10.1038/320387b0
PDF (131K)
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| | EPA bars AGS test 387
Joseph Palca
doi:10.1038/320387c0
PDF (131K)
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| | French science: Bureaucracy looks to survival 388
Robert Walgate
doi:10.1038/320388a0
PDF (138K)
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| | Aleksandrov stays at Soviet academy 388
Vera Rich
doi:10.1038/320388b0
PDF (138K)
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| | Polish nuclear power: Safety fears 388
Vera Rich
doi:10.1038/320388c0
PDF (138K)
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| | Fermilab: High-energy physics in a suitcase 389
Joseph Palca
doi:10.1038/320389a0
PDF (169K)
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| | Correspondence | |
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| | West German universities 390
JOSEPHINE V. BROWN & GEORGE ETTLINGER
doi:10.1038/320390a0
PDF (135K)
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| | South Africa 390
A. W. ANDERSON
doi:10.1038/320390b0
PDF (135K)
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| | South Africa 390
GEORGE F. R. ELLIS
doi:10.1038/320390b0
PDF (137K)
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| | Infectious AIDS 391
JOHN SEALE
doi:10.1038/320391a0
References | PDF (142K)
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| | Complex forests 391
GRETA STEVENSON
doi:10.1038/320391b0
PDF (140K)
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| | Nature exploiters 391
J. GORDON EDWARDS
doi:10.1038/320391c0
PDF (140K)
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| | Japanese psychiatry 392
DANIEL P. VAN KAMMEN
doi:10.1038/320392a0
PDF (138K)
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| | Wasting assets 392
PETER FELLGETT
doi:10.1038/320392b0
PDF (138K)
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| | Creationism 392
J. RICHARD WAKEFIELD
doi:10.1038/320392c0
PDF (138K)
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| | Animal deception? 392
HERBERT MCARTHUR
doi:10.1038/320392d0
PDF (138K)
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| | News and Views |  |
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| | Icosahedral frustrations ahead 393
The experimenters have been more successful in finding new examples of icosahedral symmetry than the theoreticians have been at interpreting these exciting data.
John Maddox
doi:10.1038/320393a0
PDF (135K)
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| | Hot stars: Breaking through the wall 394
James B. Kaler
doi:10.1038/320394a0
PDF (422K)
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| | Intracellular signalling: GTP and calcium release 395
P.F. Baker
doi:10.1038/320395a0
References | PDF (144K)
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| | Earth sciences: Growing stromatolites 396
Peter J. Smith
doi:10.1038/320396a0
PDF (138K)
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| | Molecular biology: Transposon tricks revealed 397
Andy Flavell
doi:10.1038/320397a0
References | PDF (137K)
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| | Immunology: Contrasuppressor cells and oral tolerance 398
R.B. Taylor
doi:10.1038/320398a0
References | PDF (130K)
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| | Astronomy: A hidden quasar revealed 398
C. Martin Gaskell
doi:10.1038/320398b0
References | PDF (261K)
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| | Plate tectonics: Deformation of continents 399
Philip England
doi:10.1038/320399a0
PDF (270K)
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| | Palaeontology: How did eurypterids swim? 400
D.E.G. Briggs
doi:10.1038/320400a0
PDF (139K)
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| | Scientific Correspondence | |
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| | Outlook brighter on weather forecasts 401
SHAUN LOVEJOY, DANIEL SCHERTZER & PHILIP LADOY
doi:10.1038/320401a0
References | PDF (132K)
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| | Are arguments against archaebacteria valid? 401
CARL R. WOESE, NORMAN R. PACE & GARY J. OLSEN
doi:10.1038/320401b0
References | PDF (268K)
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| | Link between lamins and intermediate filaments 402
K. WEBER
doi:10.1038/320401a0
References | PDF (136K)
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| | The mechanics of visual acuity 402
T. NASH
doi:10.1038/320402b0
PDF (136K)
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| | The human factor in mammoth extinction 402
SUSAN CACHEL
doi:10.1038/320402c0
References | PDF (136K)
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| | Book Reviews |  |
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| | What's wrong with nuclear power? 403
David Pearce reviews Nuclear Politics: The History of Nuclear Power in Britain.
By
Tony Hall
doi:10.1038/320407a0
PDF (247K)
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| | Rich cuttings from a medical life 404
Michael Shortland reviews William Hunter and the Eighteenth-Century Medical World.
Edited by
W.F. Bynum & Roy Porter
doi:10.1038/320404a0
PDF (128K)
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| | At the frontiers in South America 405
Norman Myers reviews Amazonia.
Edited by
Ghillean T. Thomas E. PranceLovejoy
doi:10.1038/320405a0
PDF (137K)
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| | Insider's insects 405
Timothy J. Bradley reviews Fundamentals of Insect Physiology.
Edited by
Murray S. Blum
doi:10.1038/320405b0
PDF (137K)
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| | Between conservation and catches 406
T.J. Pitcher reviews Marine Mammals and Fisheries.
Edited by
J.R. Beddington, R.J.H. Beverton & D.M. Lavigne
doi:10.1038/320406a0
PDF (117K)
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| | [Book Reviews 'picture story'] 406
doi:10.1038/320406b0
PDF (117K)
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| | Commentary | |
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| | Screwworm eradication a grand delusion? 407
J. L. Readshaw
doi:10.1038/320407a0
First paragraph & References | PDF (442K)
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| | Articles |  |
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| | Latest Miocene benthic 
18O changes, global ice volume, sea level and the 'Messinian salinity crisis' 411
David A. Hodell, Kristin M. Elmstrom & James P. Kennett
doi:10.1038/320411a0
Abstract & References | PDF (456K)
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| | A new acute transforming feline retrovirus and relationship of its oncogene v-kit with the protein kinase gene family 415
Peter Besmer, John E. Murphy, Patricia C. George, Feihua Qiu, Peter J. Bergold, Lynn Lederman, Harry W. Snyder Jr, David Brodeur, Evelyn E. Zuckerman & William D. Hardy
doi:10.1038/320415a0
Abstract & References | PDF (916K)
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| | Letters | |
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| | Limits of X-ray variability in active galactic nuclei 421
P. Barr & R. F. Mushotzky
doi:10.1038/320421a0
First paragraph & References | PDF (361K)
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| | Detection of the very hot central star in NGC2440 423
P. D. Atherton, N. K. Reay & S. R. Pottasch
doi:10.1038/320423a0
First paragraph & References | PDF (343K)
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| | Fossil tracks of  -particle interactions in minerals 425
P. B. Price & M. H. Salamon
doi:10.1038/320425a0
First paragraph & References | PDF (331K)
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| | Incommensurately modulated '-Sr2SiO4
428
L. Stenberg, J. R. Sellar & B. G. Hyde
doi:10.1038/320428a0
First paragraph & References | PDF (228K)
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| | Formation of fractal cracks in a kinetic fracture model 429
Yves Termonia & Paul Meakin
doi:10.1038/320429a0
First paragraph & References | PDF (385K)
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| | Detection of hail by dual-polarization radar 431
A. J. Illingworth, J. W. F. Goddard & S. M. Cherry
doi:10.1038/320431a0
First paragraph & References | PDF (311K)
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| | A new geochronometer using lanthanum-138 433
S. Nakai, H. Shimizu & A. Masuda
doi:10.1038/320433a0
First paragraph & References | PDF (336K)
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| | Cosmogenic helium in a terrestrial igneous rock 435
Mark D. Kurz
doi:10.1038/320435a0
First paragraph & References | PDF (508K)
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| | Small non-overlapping offsets of the East Pacific Rise 439
Rodey Batiza & Steven H. Margolis
doi:10.1038/320439a0
First paragraph & References | PDF (341K)
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| | The last pluvial climatic episodes in the deserts of southwestern North America 441
W. Geoffrey Spaulding & Lisa J. Graumlich
doi:10.1038/320441a0
First paragraph & References | PDF (397K)
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| | Neuronal cell−cell adhesion depends on interactions of N-CAM with heparin-like molecules 445
Gregory J. Cole, Arleen Loewy & Luis Glaser
doi:10.1038/320445a0
First paragraph & References | PDF (360K)
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| | Expression of N-cadherin adhesion molecules associated with early morphogenetic events in chick development 447
Kohei Hatta & Masatoshi Takeichi
doi:10.1038/320447a0
First paragraph & References | PDF (417K)
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| | Induction of tolerance by monoclonal antibody therapy 449
R. J. Benjamin & H. Waldmann
doi:10.1038/320449a0
First paragraph & References | PDF (395K)
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| | Abrogation of oral tolerance by contrasuppressor T cells suggests the presence of regulatory T-cell networks in the mucosal immune system 451
Iwao Suzuki, Hiroshi Kiyono, Kyoichi Kitamura, Douglas R. Green & Jerry R. McGhee
doi:10.1038/320451a0
First paragraph & References | PDF (465K)
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| | Superoxide anion is involved in the breakdown of endothelium-derived vascular relaxing factor 454
R. J. Gryglewski, R. M. J. Palmer & S. Moncada
doi:10.1038/320454a0
First paragraph & References | PDF (375K)
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| | Dispersed human immunoglobulin  light-chain genes 456
E. Lötscher, K.-H. Grzeschik, H. G. Bauer, H.-D. Pohlenz, B. Straubinger & H. G. Zachau
doi:10.1038/320456a0
First paragraph & References | PDF (325K)
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| | Increased phosphorylation of ribosomal protein S6 following microinjection of insulin receptor-kinase into Xenopus oocytes 459
James L. Mailer, Linda J. Pike, Gary R. Freidenberg, Renzo Cordera, Bradley J. Stith, Jerrold M. Olefsky & Edwin G. Krebs
doi:10.1038/320459a0
First paragraph & References | PDF (425K)
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| | Ca2+ release from endoplasmic reticulum is mediated by a guanine nucleotide regulatory mechanism 461
Donald L. Gill, Teruko Ueda, Sheau-Huei Chueh & Mark W. Noel
doi:10.1038/320461a0
First paragraph & References | PDF (502K)
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| | Matters Arising | |
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| | New evidence for the dendrochronological dating of Netherlandish paintings 465
D. ECKSTEIN, T. WAZNY, J. BAUCH & P. KLEIN
doi:10.1038/320465a0
References | PDF (242K)
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| | Dating of art-historical artefacts 466
J. M. FLETCHER
doi:10.1038/320466a0
References | PDF (127K)
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| | New on the Market | |
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| | Familiar Sights in fresh relief 467
J. L. Readshaw
doi:10.1038/320467a0
First paragraph & References | PDF (561K)
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| | Employment | |
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| | Training for competitiveness 470
"The same machines and equipment can be bought by anybody; success in the market goes to those who have a workforce that can use them to best advantage."
Richard Pearson
doi:10.1038/320470a0
PDF (131K)
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