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Editorials

Strength through diversity p785

A plan to reform appropriations committees in the US Congress — and create one devoted to science — is unlikely to come to fruition. Which is just as well.

doi:10.1038/432785a


Fishing's secretive controllers p785

Those who are publicly funded to regulate harvesting of the oceans should stop barring the public from their discussions.

doi:10.1038/432785b


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News

NASA administrator quits post to launch career as academic p787

Tony Reichhardt

doi:10.1038/432787a


Tempers flare over plan to move Pasteur labs p788

French researchers revolt over relocation scheme.

Declan Butler

doi:10.1038/432788a


Relaxed rules open path to genomic data on disease p788

HapMap Project allows data to be published in other databases.

David Cyranoski

doi:10.1038/432788b


Pentagon blocks MIT inquiry into missile data fraud claims p789

Results of missile defence tests kept under wraps.

Geoff Brumfiel

doi:10.1038/432789a


Absence of promised bioterror committee worries researchers p789

Nine-month-old government initiative still not off the ground.

Erika Check

doi:10.1038/432789b


Oil refinery site may be home to ancient relics p790

Land sale may threaten archaeological artefacts in Arizona.

Rex Dalton

doi:10.1038/432790a


Frenchman is most thanked computer scientist p790

Olivier Danvy bags most acknowledgements in research papers.

Declan Butler

doi:10.1038/432790b


Growing nanotech trade hit by questions over quality p791

Booming business may mean surge in shoddy supplies.

Jim Giles

doi:10.1038/432791a


Researchers call for more materials science in school p791

Science is more than just chemistry, biology and physics, say teachers.

David Cyranoski

doi:10.1038/432791b


News in brief p792

doi:10.1038/432792a


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News Features

Islamic science: Rebuilding the past p794

Western science owes much to Islam's golden age — a debt that is often forgotten. To help redress the balance, Fuat Sezgin has reconstructed a host of scientific treasures using ancient Arabic texts. Alison Abbott reports.

doi:10.1038/432794a


Invasive species: The toads are coming! p796

Cane toads are infamous for wreaking havoc on Australian ecosystems. But, as Peter Aldhous discovers, we're only now about to learn whether their fearsome reputation is deserved.

doi:10.1038/432796a


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Correspondence

Genome news highlights loss of chicken strains p799

Future research is already under threat, as budget cuts wipe out irreplaceable lines.

Marcia M. Miller

doi:10.1038/432799a


Media affect opinions less than they would like p799

Peter Melchett

doi:10.1038/432799b


Brazil's efforts to reverse decline in scholarships p799

Erney Plessmann Camargo

doi:10.1038/432799c


EPA not responsible for 'uninvitation' of a critic p799

James J. Jones

doi:10.1038/432799d


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Commentary

Harnessing nature in Africa p801

Biological pest control can benefit the pocket, health and the environment.

doi:10.1038/432801a


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Books and Arts

Echo of the big bang p803

An end to the boom in popular science books may actually raise standards.

Peter Tallack reviews

doi:10.1038/432803a


Scientist wins Guardian First Book Award p803

doi:10.1038/432803b


The search for meaning p804

W. Tecumseh Fitch reviews The Dynamic Dance: Nonvocal Communication in African Great Apes by Barbara J. King

doi:10.1038/432804a


Back to the roots p805

Jan Salick reviews Ethnoflora of the Soqotra Archipelago by Anthony G. Miller and Miranda Morris

doi:10.1038/432805a


Reforming research p806

Brian Heap reviews Scrutinising Science: The Changing UK Government of Science by Rebecca Boden, Deborah Cox, Maria Nedeva and Katherine Barker

doi:10.1038/432806a


Secret sex p806

doi:10.1038/432806b


Erratum p806

doi:10.1038/432806c


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Essay

Concept

Divide, conquer and unify p807

Fluid dynamics: Ludwig Prandtl's ideas brought hydraulics and hydrodynamics together to found a new field.

Roddam Narasimha

doi:10.1038/432807a


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News and Views

Electrons frozen in motion p809

A single electron cloud in molecular nitrogen has been photographed. The snapshot is recorded so rapidly that it might become possible to image electron clouds as they change during fundamental molecular processes.

Henrik Stapelfeldt

doi:10.1038/432809a


Transmissible spongiform encephalopathies:  Scrapie control under new strain p810

Sheep believed to be resistant to scrapie are succumbing to atypical infections and a newly identified strain of the disease. Eradication programmes based on selective breeding should be reappraised.

Matthew Baylis and K. Marie McIntyre

doi:10.1038/432810a


Cell biology:  Iron thievery p811

Bacteria have many ways of stealing iron from the organisms they infect. But this thievery is not one-sided, and a newly discovered device in the mammalian tool kit does a good job of keeping bacteria in check.

Jonathan Barasch and Kiyoshi Mori

doi:10.1038/432811a


100 and 50 years ago p812

doi:10.1038/432812a


Archaeology:  Much rowing for fish p813

A thousand years ago, there was a shift in the fish diet in England from freshwater to marine species. The relevant case history, derived from picking through leftovers, has a contemporary resonance.

Daniel Pauly

doi:10.1038/432813a


Palaeoclimate:  A balmy Arctic p814

Analyses of sediments retrieved from a drifting ice island suggest that the Arctic Ocean may have been ice free and as warm as 15 °C about 70 million years ago. Therein is a challenge for climate models.

Christopher J. Poulsen

doi:10.1038/432814a


Planetary science:  An ill solar wind p814

Christopher Surridge

doi:10.1038/432814b


Cell biology:  Popping out of the nucleus p815

Previous structural snapshots have provided insight into how proteins are imported into the cell nucleus. The structure of an export complex now completes the molecular picture of the nuclear transport cycle.

André Hoelz and Günter Blobel

doi:10.1038/432815a


Evolutionary biology:  Chromosome chain makes a link p817

The platypus' sex chromosomes are as peculiar as its appearance. Five X and five Y chromosomes form a remarkable chain-like configuration in male reproductive cells that ensures appropriate sperm formation.

Laura Carrel

doi:10.1038/432817a


Infectious disease:  Past and future of an old foe p817

Rory Howlett

doi:10.1038/432817b


Research highlights p819

doi:10.1038/432819a


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Brief Communications

Laboratory animal welfare:  Cage enrichment and mouse behaviour p821

Test responses by laboratory mice are unperturbed by more entertaining housing.

David P. Wolfer, Oxana Litvin, Samuel Morf, Roger M. Nitsch, Hans-Peter Lipp and Hanno Würbel

doi:10.1038/432821a


Neurosurgery:  Functional regeneration after laser axotomy p822

Mehmet Fatih Yanik, Hulusi Cinar, Hediye Nese Cinar, Andrew D. Chisholm, Yishi Jin and Adela Ben-Yakar

doi:10.1038/432822a


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Insight

introduction

Chemical space p823

Peter Kirkpatrick and Clare Ellis

doi:10.1038/432823a


Chemical space and biology p824

Christopher M. Dobson

doi:10.1038/nature03192


review article

Lessons from natural molecules p829

Jon Clardy and Christopher Walsh

doi:10.1038/nature03194


Natural and engineered nucleic acids as tools to explore biology p838

Ronald R. Breaker

doi:10.1038/nature03195


Exploring biology with small organic molecules p846

Brent R. Stockwell

doi:10.1038/nature03196


Navigating chemical space for biology and medicine p855

Christopher Lipinski and Andrew Hopkins

doi:10.1038/nature03193


commentary

Virtual screening of chemical libraries p862

Brian K. Shoichet

doi:10.1038/nature03197


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Articles

Tomographic imaging of molecular orbitals p867

J. Itatani, J. Levesque, D. Zeidler, Hiromichi Niikura, H. Pépin, J. C. Kieffer, P. B. Corkum and D. M. Villeneuve

doi:10.1038/nature03183

See also: News and Views by Stapelfeldt


Structural basis for the assembly of a nuclear export complex p872

Yoshiyuki Matsuura and Murray Stewart

doi:10.1038/nature03144

See also: News and Views by Hoelz & Blobel


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Letters to Nature

An extreme distortion of the Van Allen belt arising from the 'Hallowe'en' solar storm in 2003 p878

D. N. Baker, S. G. Kanekal, X. Li, S. P. Monk, J. Goldstein and J. L. Burch

doi:10.1038/nature03116


Hall-effect evolution across a heavy-fermion quantum critical point p881

S. Paschen, T. Lühmann, S. Wirth, P. Gegenwart, O. Trovarelli, C. Geibel, F. Steglich, P. Coleman and Q. Si

doi:10.1038/nature03129


Lensless imaging of magnetic nanostructures by X-ray spectro-holography p885

S. Eisebitt, J. Lüning, W. F. Schlotter, M. Lörgen, O. Hellwig, W. Eberhardt and J. Stöhr

doi:10.1038/nature03139


High temperatures in the Late Cretaceous Arctic Ocean p888

Hugh C. Jenkyns, Astrid Forster, Stefan Schouten and Jaap S. Sinninghe Damsté

doi:10.1038/nature03143

See also: News and Views by Poulsen


Recycling lower continental crust in the North China craton p892

Shan Gao, Roberta L. Rudnick, Hong-Ling Yuan, Xiao-Ming Liu, Yong-Sheng Liu, Wen-Liang Xu, Wen-Li Ling, John Ayers, Xuan-Che Wang and Qing-Hai Wang

doi:10.1038/nature03162


The impact of surface-adsorbed phosphorus on phytoplankton Redfield stoichiometry p897

Sergio A. Sañudo-Wilhelmy, Antonio Tovar-Sanchez, Fei-Xue Fu, Douglas G. Capone, Edward J. Carpenter and David A. Hutchins

doi:10.1038/nature03125


Public health vaccination policies for containing an anthrax outbreak p901

Ron Brookmeyer, Elizabeth Johnson and Robert Bollinger

doi:10.1038/nature03087


Transmissibility of 1918 pandemic influenza p904

Christina E. Mills, James M. Robins and Marc Lipsitch

doi:10.1038/nature03063


Trail geometry gives polarity to ant foraging networks p907

Duncan E. Jackson, Mike Holcombe and Francis L. W. Ratnieks

doi:10.1038/nature03105


Genome sequence of Silicibacter pomeroyi reveals adaptations to the marine environment p910

Mary Ann Moran, Alison Buchan, José M. González, John F. Heidelberg, William B. Whitman, Ronald P. Kiene, James R. Henriksen, Gary M. King, Robert Belas, Clay Fuqua, Lauren Brinkac, Matt Lewis, Shivani Johri, Bruce Weaver, Grace Pai, Jonathan A. Eisen, Elisha Rahe, Wade M. Sheldon, Wenying Ye, Todd R. Miller, Jane Carlton, David A. Rasko, Ian T. Paulsen, Qinghu Ren, Sean C. Daugherty, Robert T. Deboy, Robert J. Dodson, A. Scott Durkin, Ramana Madupu, William C. Nelson, Steven A. Sullivan, M. J. Rosovitz, Daniel H. Haft, Jeremy Selengut and Naomi Ward

doi:10.1038/nature03170


In the platypus a meiotic chain of ten sex chromosomes shares genes with the bird Z and mammal X chromosomes p913

Frank Grützner, Willem Rens, Enkhjargal Tsend-Ayush, Nisrine El-Mogharbel, Patricia C. M. O'Brien, Russell C. Jones, Malcolm A. Ferguson-Smith and Jennifer A. Marshall Graves

doi:10.1038/nature03021

See also: News and Views by Carrel


Lipocalin 2 mediates an innate immune response to bacterial infection by sequestrating iron p917

Trude H. Flo, Kelly D. Smith, Shintaro Sato, David J. Rodriguez, Margaret A. Holmes, Roland K. Strong, Shizuo Akira and Alan Aderem

doi:10.1038/nature03104

See also: News and Views by Barasch & Mori


Modelling how ribavirin improves interferon response rates in hepatitis C virus infection p922

Narendra M. Dixit, Jennifer E. Layden-Almer, Thomas J. Layden and Alan S. Perelson

doi:10.1038/nature03153


Substrate recognition strategy for botulinum neurotoxin serotype A p925

Mark A. Breidenbach and Axel T. Brunger

doi:10.1038/nature03123


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Naturejobs

Prospects

An equal chance p931

Paul Smaglik

doi:10.1038/nj7019-931a


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