A United Nations-sponsored meeting in Paris this week will indicate whether humanity has the wherewithal to save our closest cousins in the animal kingdom from extinction.
doi:10.1038/426369a
Table of contents
Volume 426 Number 6965 pp369-479
Top of page
Editorials
Facing up to endangered apes p369
Eastern promise p369
Untapped scientific potential to the east offers short-term challenges for the European Union, but will strengthen it in the end.
doi:10.1038/426369b
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News
State department woos weapons researchers in bid to rebuild Iraq p371
Germany puts faith in big guns as science ministry feels pinch p372
GloFish casts light on murky policing of transgenic animals p372
Promega changes tack in battle over patent p373
US draws up plans to tackle autism p373
University buildings named on shaky ground p374
Russian claims first in magnetic imaging p375
US on sidelines as China prepares for satellite launch p375
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News Features
Fish farming: Eat your veg p378
With fish farming on the rise, researchers are seeking ways to make aquaculture more sustainable. One solution may mean turning carnivorous fish into vegetarians. Kendall Powell gets a taste of the future.
Kendall Powell
doi:10.1038/426378a
Space science: Unstoppable force p380
After 40 years in development, and some $650 million of NASA funds, Gravity Probe B is almost ready to launch. Would Einstein, whose theories it is about to test, have approved? Tony Reichhardt reports.
Tony Reichhardt
doi:10.1038/426380a
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Correspondence
Filling the gap between knowing and doing p383
Research into delivery systems is needed to translate knowledge into improved health.
Tikki Pang
doi:10.1038/426383a
Open access: the JCI has already shown it works p383
Aircraft give a new view of jellyfish behaviour p383
Graeme C. Hays, Jon. D. R. Houghton, Tom Doyle and John Davenport
doi:10.1038/426383c
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Books and Arts
Fuzzy vision p385
A dark view of a future where the lines of self are blurred.
doi:10.1038/426385a
Jazzing up neuroscience p386
doi:10.1038/426386a
Looking for a new home? p386
doi:10.1038/426386b
Exhibition: Seeing the light p387
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News and Views
言語学：生命の樹と言語の樹
Linguistics: Trees of life and of language p391
The dating of ancient languages by a technique called glottochronology is undergoing a revival, stimulated by the computational and statistical methods used to tease out evolutionary relationships in biology.
David B. Searls
doi:10.1038/426391a
細胞生物学：記憶のおかげ
Cell biology: Thanks for the memory p392
In response to a transient hormonal cue, a developing egg commits irreversibly to a mature state. Surprisingly, this irreversible switch is composed of intrinsically reversible components.
Jill C. Sible
doi:10.1038/426392a
惑星科学：カイパーベルトに運び出す
Planetary science: Conveyed to the Kuiper belt p393
The small icy bodies that make up the Kuiper belt are the most distant objects known in the Solar System. A consistent picture is now emerging which suggests that these objects formed much closer to the Sun.
Rodney Gomes
doi:10.1038/426393a
比較ゲノミクス：2匹の線虫は1匹に勝る
Comparative genomics: Two worms are better than one p395
The genome of the microscopic worm Caenorhabditis briggsae has been sequenced, and shows some remarkable differences from the genome of the better known — and physically similar — C. elegans.
Mark Blaxter
doi:10.1038/426395a
天文学：遠い宇宙で輝く灯火
Astronomy: Beacons in the distant cosmos p397
Gamma-ray bursts are the brightest and most distant explosions in the Universe. A convincing body of evidence now links these bursts to supernovae, but there is still more to learn about their origins.
Luigi Piro
doi:10.1038/426397a
100 and 50 years ago p397
doi:10.1038/426397b
構造生物学：光合成に関する
Structural biology: Dual approach to a light problem p399
The structure of the last of the major pigment-containing protein complexes involved in photosynthesis is now revealed. The details complete our picture of electron shuttling in this vital process.
Werner Kühlbrandt
doi:10.1038/426399a
地球科学：差がつくのが超遅い海嶺
Earth science: The ultraslow difference p401
The speed at which mid-ocean ridges grind out new ocean floor varies considerably. The slowest-spreading ridges are especially tough to study — but the latest data show that they are especially intriguing.
Jason Phipps Morgan
doi:10.1038/426401a
News and views in brief p402
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Brief Communications
Pharmacology: Uncoupling the agony from ecstasy p403
A mitochondrial protein may mediate a dangerous side-effect of some recreational drugs.
Edward M. Mills, Matthew L. Banks, Jon E. Sprague and Toren Finkel
doi:10.1038/426403a
Photonic crystals: Imaging by flat lens using negative refraction p404
Patanjali V. Parimi, Wentao T. Lu, Plarenta Vodo and Srinivas Sridhar
doi:10.1038/426404a
First paragraph | Full Text | PDF (97K) | Supplementary information
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Articles
地球：拡大速度の極めて遅い種類の海嶺
An ultraslow-spreading class of ocean ridge p405
生化学：シトクロムb6f複合体に含まれる異例のヘム
An atypical haem in the cytochrome b6f complex p413
David Stroebel, Yves Choquet, Jean-Luc Popot and Daniel Picot
doi:10.1038/nature02155
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An ancient role for nuclear
Letters to Nature
宇宙：海王星の移動中に起こった天体の外側への輸送によるカイパーベルトの形成
The formation of the Kuiper belt by the outward transport of bodies during Neptune's migration p419
工学：光学格子による微小流体選別
Microfluidic sorting in an optical lattice p421
M. P. MacDonald, G. C. Spalding and K. Dholakia
doi:10.1038/nature02144
工学：圧力誘起流による「バロプラスチック」の低温加工
Low-temperature processing of 'baroplastics' by pressure-induced flow p424
Juan A. Gonzalez-Leon, Metin H. Acar, Sang-Woog Ryu, Anne-Valérie G. Ruzette and Anne M. Mayes
doi:10.1038/nature02140
日本語要約 | Full Text | PDF (330K)
材料：高速イオン伝導性を示す結晶性無機カルコゲナイドの合成設計
Synthetic design of crystalline inorganic chalcogenides exhibiting fast-ion conductivity p428
Nanfeng Zheng, Xianhui Bu and Pingyun Feng
doi:10.1038/nature02159
地球：爆発的火山活動はマグマ破砕の必然的な結果ではない可能性がある
Explosive volcanism may not be an inevitable consequence of magma fragmentation p432
言語：言語の系統樹の分岐年代は、インド‐ヨーロッパ語族の起源がアナトリアであることを裏づけている
Language-tree divergence times support the Anatolian theory of Indo-European origin p435
Russell D. Gray and Quentin D. Atkinson
doi:10.1038/nature02029
生態：河川メソコスムにおける生態系過程への微生物バイオフィルムの寄与
Contributions of microbial biofilms to ecosystem processes in stream mesocosms p439
Tom J. Battin, Louis A. Kaplan, J. Denis Newbold and Claude M. E. Hansen
doi:10.1038/nature02152
聴覚：聴覚皮質の同調とスパイクタイミングの尖鋭化を生み出す均衡的抑制
Balanced inhibition underlies tuning and sharpens spike timing in auditory cortex p442
Michael Wehr and Anthony M. Zador
doi:10.1038/nature02116
発生：軸極性と胚葉分離の進化における核内β-カテニンの進化的に古い役割
An ancient role for nuclear 
-catenin in the evolution of axial polarity and germ layer segregation p446
Athula H. Wikramanayake, Melanie Hong, Patricia N. Lee, Kevin Pang, Christine A. Byrum, Joanna M. Bince, Ronghui Xu and Mark Q. Martindale
doi:10.1038/nature02113
医学：アンギオテンシン変換酵素2はSARSコロナウイルスに対する機能的受容体である
Angiotensin-converting enzyme 2 is a functional receptor for the SARS coronavirus p450
Wenhui Li, Michael J. Moore, Natalya Vasilieva, Jianhua Sui, Swee Kee Wong, Michael A. Berne, Mohan Somasundaran, John L. Sullivan, Katherine Luzuriaga, Thomas C. Greenough, Hyeryun Choe and Michael Farzan
doi:10.1038/nature02145
医学：ZAP-70遺伝子の変異による胸腺T細胞選択の変化はマウスに自己免疫性関節炎を引き起こす
Altered thymic T-cell selection due to a mutation of the ZAP-70 gene causes autoimmune arthritis in mice p454
Noriko Sakaguchi, Takeshi Takahashi, Hiroshi Hata, Takashi Nomura, Tomoyuki Tagami, Sayuri Yamazaki, Toshiko Sakihama, Takaji Matsutani, Izumi Negishi, Syuichi Nakatsuru and Shimon Sakaguchi
doi:10.1038/nature02119
発生：正のフィードバックに基づく双安定の「記憶モジュール」が細胞運命決定を支配する
A positive-feedback-based bistable 'memory module' that governs a cell fate decision p460
生化学：Drosophila Argonaute 2 PAZドメインの構造と核酸結合
Structure and nucleic-acid binding of the Drosophila Argonaute 2 PAZ domain p465
Andreas Lingel, Bernd Simon, Elisa Izaurralde and Michael Sattler
doi:10.1038/nature02123
生化学：PAZドメインの構造とよく保存されたRNAとの結合
Structure and conserved RNA binding of the PAZ domain p469
Kelley S. Yan, Sherry Yan, Amjad Farooq, Arnold Han, Lei Zeng and Ming-Ming Zhou
doi:10.1038/nature02129
Addendum: Specific cytotoxic T cells eliminate cells producing neutralizing antibodies p474
Oliver Planz, Peter Seiler, Hans Hengartner and Rolf M. Zinkernagel
doi:10.1038/nature02146
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CAREERS AND RECRUITMENT
Naturejobs
ProspectsHome-grown success p477
CAREERS AND RECRUITMENT
Small world, big hopes p478
Nanoscience is fragmenting into tinier pieces, but there are great expectations everywhere. Myrna Watanabe investigates.
Myrna Watanabe
doi:10.1038/nj6965-478a
