Editorials

Kyoto challenge has just begun p613

A move by Russia to support the Kyoto Protocol should usher in an era of international collaboration in mitigating climate change. Validating emissions trading and bringing developing economies into the fold are the next priorities.

doi:10.1038/431613a

Full Text | PDF (54K)

Futures of artificial life p613

Researchers involved in synthetic biology need to take steps to engage more with the public.

doi:10.1038/431613b

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News

US universities up in arms over licence plans for foreign staff p615

Foreign scientists may need permission to work with everything from bacteria to body armour.

Geoff Brumfiel

doi:10.1038/431615a

Full Text | PDF (273K)

Science of smell wins medicine Nobel p616

Award honours work in understanding olfaction.

Alison Abbott

doi:10.1038/431616a

Full Text | PDF (229K)

Colourful work on quarks scoops triple crown p617

Physics Nobel winners shed light on strong nuclear force.

Philip Ball

doi:10.1038/431617a

Full Text | PDF (139K)

Harvard ceremony graced by hula-hooping laureates p617

Ig Nobel Prizes make audience laugh... and think.

Steve Nadis

doi:10.1038/431617b

Full Text | PDF (139K)

Subtler tests urged for supercomputers p618

IBM's Blue Gene/L is now fastest, but is it best?

Jim Giles

doi:10.1038/431618a

Full Text | PDF (166K)

Tardy earthquake excites California geophysicists p618

Researchers pounce on long-expected tremors in Parkfield.

David Cyranoski

doi:10.1038/431618b

Full Text | PDF (166K)

Blair to seek consensus on safe greenhouse-gas levels p619

Britain plans contentious approach to climate-change policies.

Jim Giles

doi:10.1038/431619a

Full Text | PDF (140K)

Britain warms to European space exploration plan p619

UK and Italy set to take leading roles in Solar System science.

Jim Giles

doi:10.1038/431619b

Full Text | PDF (140K)

News in brief p620

doi:10.1038/431620a

Full Text | PDF (164K)

News Features

Iraqi military research: Rocket man p621

One of Saddam Hussein's senior weapons designers tells Geoff Brumfiel of his past, and of his hopes for a new career.

doi:10.1038/431621a

Full Text | PDF (257K)

Semiconductor industry: Chipping in p622

The production of silicon chips is big business, but with success have come environmental concerns. Geoff Brumfiel meets the people helping the industry to clean up its act.

doi:10.1038/431622a

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Synthetic biology: Starting from scratch p624

Genetic engineering is old hat. Biologists are now synthesizing genomes, altering the genetic code and contemplating new life forms. Is it time to think about the risks? Philip Ball asks the experts.

doi:10.1038/431624a

Full Text | PDF (685K)

Correspondence

Brazil needs action rather than words p627

The downward trend in support for postgraduates could reverse recent improvements.

André Frazão Helene and Verónica S. Valentinuzzi

doi:10.1038/431627a

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No mistake in Berkeley's biotechnology deal p627

Philip G. Hultin

doi:10.1038/431627b

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Scientists and teachers should ignore politics p627

Minna J. Hsu and Govindasamy Agoramoorthy

doi:10.1038/431627c

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Books and Arts

The price of hope p629

What's the benefit to drug companies of making medicines for the poor?

Pierre Chirac reviews Strong Medicine: Creating Incentives for Pharmaceutical Research on Neglected Diseases by Michael Kremer and Rachel Glennerster

doi:10.1038/431629a

Full Text | PDF (247K)

The other evolutionist p630

George Beccaloni reviews The Heretic in Darwin's Court: The Life of Alfred Russel Wallace by Ross Slotten and An Elusive Victorian: The Evolution of Alfred Russel Wallace by Martin Fichman

doi:10.1038/431630a

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Cycles of life p630

David Schimel reviews Nutrient Cycling and Limitation: Hawai'i as a Model System by Peter Vitousek

doi:10.1038/431630b

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A world of learning p631

doi:10.1038/431631a

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Essay

The long and the short of it... p633

Time: how much of the cosmological timescale do we control and use?

Alexander E. Kaplan

doi:10.1038/431633a

Full Text | PDF (173K)

News and Views

Developmental biology: Holding it together in the eye p635

To form tissues, like cells must clump together. The striking resemblance between one cell aggregate in flies and a cluster of soap bubbles points to a crucial role for surface mechanics in biological pattern formation.

Paul A. Janmey and Dennis E Discher

doi:10.1038/431635a

Full Text | PDF (552K)

Astromineralogy: Dust in another solar system p636

A star surrounded by a disk of dust could be a solar system in the making. Analysis of radiation from the dust suggests that there might be belts of comets or asteroids, and even a planet, orbiting the star.

Steve Desch

doi:10.1038/431636a

Full Text | PDF (1,411K)

Molecular biology: No exception to reversibility p637

Histone proteins, which serve as scaffolds for packaging DNA, can be modified in numerous ways. It's been thought that one modification, methylation, is irreversible — but that view must now change.

Yi Zhang

doi:10.1038/431637a

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100 and 50 years ago p638

doi:10.1038/431638a

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Palaeontology: Ecology of ice-age extinctions p639

The last ice age saw the extinction of numerous large mammals — but perhaps not as many as was thought. The woolly mammoth survived to much more recent times, and so, it now seems, did the Irish elk.

John Pastor and Ron A. Moen

doi:10.1038/431639a

Full Text | PDF (454K)

Materials physics: Doping control for nanotubes p640

Adding guest atoms to inorganic nanotubes, known as 'doping', influences their room-temperature magnetic properties — properties that could be exploited in 'spintronic' devices and computer memory.

Reshef Tenne

doi:10.1038/431640a

Full Text | PDF (287K)

Cell biology: Light on pits p641

The imaging of events in living cells offers a way to test models of cell behaviour and develop new hypotheses. The invaginating 'pits' on the surface of cells are the latest subject of this approach.

Elizabeth Smythe

doi:10.1038/431641a

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Research highlights p643

doi:10.1038/431643a

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Brief Communications

Chicken genomics: Feather-pecking and victim pigmentation p645

A genetic factor that encourages this form of farmyard bullying has been identified.

Linda Keeling, Leif Andersson, Karin E. Schütz, Susanne Kerje, Robert Fredriksson, Örjan Carlborg, Charles K. Cornwallis, Tommaso Pizzari and Per Jensen

doi:10.1038/431645a

First paragraph | Full Text | PDF (180K) | Supplementary information

Pair bonds:  Arrival synchrony in migratory birds p646

T. G. Gunnarsson, J. A. Gill, T. Sigurbjörnsson and W. J. Sutherland

doi:10.1038/431646a

First paragraph | Full Text | PDF (289K)

Articles

Surface mechanics mediate pattern formation in the developing retina p647

Takashi Hayashi and Richard W. Carthew

doi:10.1038/nature02952

Abstract | Full Text | PDF (532K)

See also: News and Views by Janmey & Discher

Direct integration of Hox and segmentation gene inputs during Drosophila development p653

Brian Gebelein, Daniel J. McKay and Richard S. Mann

doi:10.1038/nature02946

Abstract | Full Text | PDF (500K) | Supplementary information

Letters to Nature

An early extrasolar planetary system revealed by planetesimal belts in Pictoris p660

Yoshiko Kataza Okamoto, Hirokazu Kataza, Mitsuhiko Honda, Takuya Yamashita, Takashi Onaka, Jun-ichi Watanabe, Takashi Miyata, Shigeyuki Sako, Takuya Fujiyoshi and Itsuki Sakon

doi:10.1038/nature02948

First paragraph | Full Text | PDF (299K)

See also: News and Views by Desch

Magnesium sulphate salts and the history of water on Mars p663

David T. Vaniman, David L. Bish, Steve J. Chipera, Claire I. Fialips, J. William Carey and William C. Feldman

doi:10.1038/nature02973

First paragraph | Full Text | PDF (256K)

A superconductor to superfluid phase transition in liquid metallic hydrogen p666

Egor Babaev, Asle Sudbø and N. W. Ashcroft

doi:10.1038/nature02910

First paragraph | Full Text | PDF (224K)

A quantum fluid of metallic hydrogen suggested by first-principles calculations p669

Stanimir A. Bonev, Eric Schwegler, Tadashi Ogitsu and Giulia Galli

doi:10.1038/nature02968

First paragraph | Full Text | PDF (219K)

Room-temperature ferromagnetic nanotubes controlled by electron or hole doping p672

L. Krusin-Elbaum, D. M. Newns, H. Zeng, V. Derycke, J. Z. Sun and R. Sandstrom

doi:10.1038/nature02970

First paragraph | Full Text | PDF (417K) | Supplementary information

See also: News and Views by Tenne

Biogenically driven organic contribution to marine aerosol p676

Colin D. O'Dowd, Maria Cristina Facchini, Fabrizia Cavalli, Darius Ceburnis, Mihaela Mircea, Stefano Decesari, Sandro Fuzzi, Young Jun Yoon and Jean-Philippe Putaud

doi:10.1038/nature02959

First paragraph | Full Text | PDF (297K) | Supplementary information

Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids p680

Xing Xu, Mark A. Norell, Xuewen Kuang, Xiaolin Wang, Qi Zhao and Chengkai Jia

doi:10.1038/nature02855

First paragraph | Full Text | PDF (340K) | Supplementary information

Pleistocene to Holocene extinction dynamics in giant deer and woolly mammoth p684

A. J. Stuart, P. A. Kosintsev, T. F. G. Higham and A. M. Lister

doi:10.1038/nature02890

First paragraph | Full Text | PDF (1,800K) | Supplementary information

See also: News and Views by Pastor & Moen

Photosynthetic architecture differs in coastal and oceanic diatoms p689

Robert F. Strzepek and Paul J. Harrison

doi:10.1038/nature02954

First paragraph | Full Text | PDF (187K) | Supplementary information

Pleiotropy as a mechanism to stabilize cooperation p693

Kevin R. Foster, Gad Shaulsky, Joan E. Strassmann, David C. Queller and Chris R. L. Thompson

doi:10.1038/nature02894

First paragraph | Full Text | PDF (259K)

Migratory neural crest-like cells form body pigmentation in a urochordate embryo p696

William R. Jeffery, Allen G. Strickler and Yoshiyuki Yamamoto

doi:10.1038/nature02975

First paragraph | Full Text | PDF (275K)

Role for a cortical input to hippocampal area CA1 in the consolidation of a long-term memory p699

Miguel Remondes and Erin M. Schuman

doi:10.1038/nature02965

First paragraph | Full Text | PDF (385K) | Supplementary information

Enhanced virulence of influenza A viruses with the haemagglutinin of the 1918 pandemic virus p703

Darwyn Kobasa, Ayato Takada, Kyoko Shinya, Masato Hatta, Peter Halfmann, Steven Theriault, Hiroshi Suzuki, Hidekazu Nishimura, Keiko Mitamura, Norio Sugaya, Taichi Usui, Takeomi Murata, Yasuko Maeda, Shinji Watanabe, M. Suresh, Takashi Suzuki, Yasuo Suzuki, Heinz Feldmann and Yoshihiro Kawaoka

doi:10.1038/nature02951

First paragraph | Full Text | PDF (273K) | Supplementary information

Hedgehog signalling in prostate regeneration, neoplasia and metastasis p707

Sunil S. Karhadkar, G. Steven Bova, Nadia Abdallah, Surajit Dhara, Dale Gardner, Anirban Maitra, John T. Isaacs, David M. Berman and Philip A. Beachy

doi:10.1038/nature02962

First paragraph | Full Text | PDF (400K) | Supplementary information

p19^ARF directly and differentially controls the functions of c-Myc independently of p53 p712

Ying Qi, Mark A. Gregory, Zhaoliang Li, Jeffrey P. Brousal, Kimberly West and Stephen R. Hann

doi:10.1038/nature02958

First paragraph | Full Text | PDF (483K) | Supplementary information

Naturejobs

The philanthropic principle p719

Paul Smaglik

doi:10.1038/nj7009-719a

Full Text | PDF (134K)

Centre stage in Missouri p720

Paul Smaglik

doi:10.1038/nj7009-720a

Full Text | PDF (378K)

Graduate Journal:  The science of religion p722

Tshaka Cunningham

doi:10.1038/nj7009-722a

Full Text | PDF (99K)

Nuts & Bolts p722

Deb Koen

doi:10.1038/nj7009-722b

Full Text | PDF (99K)

Movers p722

doi:10.1038/nj7009-722c

Full Text | PDF (99K)