Problems with reproducibility bedevil research on adult stem cells, yet treatments using the cells are moving rapidly into human clinical trials. Those working in the field need to adopt more robust experimental approaches.
doi:10.1038/428587a
Table of contents
Volume 428 Number 6983 pp587-678
(this content only available online) indicates content that is available online only
Top of page
Editorials
No consensus on stem cells p587
Some sobering thoughts p587
We pay too much attention to the health benefits of alcohol and neglect the devastating effects of excessive consumption.
doi:10.1038/428587b
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News
Bush administration dismisses allegations of scientific bias p589
Law paves way for concealed guns on campus p589
Biotech company fights to keep tips on data access private p590
Ethics council calls for probe into assisted reproduction p590
US biologist accused of robbing colleagues p591
California edges towards farming drug-producing rice p591
Web links leave abstracts going nowhere p592
Election promise gives hope to Spanish scientists p592
Modellers deplore 'short-termism' on climate p593
Top of page
News Features
True colours p596
It's only when you begin to see the world as birds do — detecting light in the ultraviolet spectrum — that the full subtlety of their behaviour is revealed. Rex Dalton catches a glimpse.
Rex Dalton
doi:10.1038/428596a
Public health: The demon drink p598
A little alcohol can be good for you. But, collectively, our drinking habits are seriously damaging our health. Can public-health officials promote the message of moderation? Helen Pearson investigates.
Helen Pearson
doi:10.1038/428598a
Top of page
Correspondence
Scientific aid to Brazil is strangled by red tape p601
The cost of importing donated equipment can be more than its original purchase price.
Stevens Kastrup Rehen
doi:10.1038/428601a
Ugly truths should not stop Pakistan's reforms p601
Gulf Stream safe if wind blows and Earth turns p601
Poet described stars in Milky Way before Galileo p601
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Books and Arts
Clarifying consciousness p603
Work is under way to relate the mind to observable neurobiological events.
doi:10.1038/428603a
Keep it simple p604
Diversity with a difference p605
doi:10.1038/428605a
Top of page
Essay
ConceptThe perils of anthropomorphism p606
Consciousness should be ascribed to animals only with extreme caution.
Clive D. L. Wynne
doi:10.1038/428606a
Top of page
News and Views
幹細胞：ロスト・イン・トランスレーション
Stem cells: Lost in translation p607
The potential use of stem cells as agents of repair in human disease makes them the subject of high-profile studies. But we should be wary of prematurely pushing laboratory research into clinical practice.
Kenneth R. Chien
doi:10.1038/nature02500
地球科学：逆転の時
Earth science: Time of reversal p608
At intervals, the polarity of the Earth's magnetic field reverses. The timescale for this reversal is unclear — in fact, it seems to depend on the latitude of the site from which the geological data are extracted.
Ronald T. Merrill
doi:10.1038/428608a
細胞生物学：境界での競合
Cell biology: Competitive edge p609
火星：いたるところに水がある
Mars: Water, water everywhere p610
Mars is a very watery planet, but all the water seems to be frozen. Divining the amount and distribution of this water, past and present, is essential for understanding martian climates, and more.
Timothy N. Titus
doi:10.1038/nature02482
行動の進化：汝の隣人との協力
Behavioural evolution: Cooperate with thy neighbour? p611
What gives cooperation an evolutionary edge? Two features of a population — spatial structure and finite size — are factors in the success of any strategy, although more subtle than we thought.
Peter D. Taylor and Troy Day
doi:10.1038/428611a
100 and 50 years ago p611
doi:10.1038/428611b
Obituary: David Shoenberg (1911–2004) p613
News and views in brief p614
doi:10.1038/428614a
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Top of page
Brief Communications
Feeding mechanisms: Hummingbird jaw bends to aid insect capture p615
This tiny bird has a neat trick to trap flies in mid-air with its long nectar-seeking beak.
Gregor M. Yanega and Margaret A. Rubega
doi:10.1038/428615a
First paragraph | Full Text | PDF (132K) | Supplementary information
Climatology: Threatened loss of the Greenland ice-sheet p616
Jonathan M. Gregory, Philippe Huybrechts and Sarah C. B. Raper
doi:10.1038/428616a
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Brief Communications Arising
Evolutionary biology: Sex change and relative body size in animals
Peter M. Buston, Philip L. Munday and Robert R. Warner
doi:10.1038/nature02512a
Evolutionary biology: Sex change and relative body size in animals (reply)
Top of page
Article
進化：古代に酵母Saccharomyces cerevisiaeに全ゲノム重複が生じた証拠とその進化的解析
Proof and evolutionary analysis of ancient genome duplication in the yeast Saccharomyces cerevisiae p617
Manolis Kellis, Bruce W. Birren and Eric S. Lander
doi:10.1038/nature02424
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I
Letters to Nature
宇宙：近傍銀河における星集団から示される宇宙の星形成史
The star-formation history of the Universe from the stellar populations of nearby galaxies p625
Alan Heavens, Benjamin Panter, Raul Jimenez and James Dunlop
doi:10.1038/nature02474
宇宙：火星の南極冠に確認された永続的な水の氷
Perennial water ice identified in the south polar cap of Mars p627
Jean-Pierre Bibring, Yves Langevin, François Poulet, Aline Gendrin, Brigitte Gondet, Michel Berthé, Alain Soufflot, Pierre Drossart, Michel Combes, Giancarlo Bellucci, Vassili Moroz, Nicolas Mangold, Bernard Schmitt and the OMEGA team
doi:10.1038/nature02461
日本語要約 | Full Text | PDF (293K)
物理：モット絶縁体とバンド絶縁体との界面における電子再構成
Electronic reconstruction at an interface between a Mott insulator and a band insulator p630
地震：沈み込む高温の海洋地殻内で鉱物粒子境界に析出する水による断層運動
Faulting induced by precipitation of water at grain boundaries in hot subducting oceanic crust p633
Junfeng Zhang, Harry W. Green, II, Krassimir Bozhilov and Zhenmin Jin
doi:10.1038/nature02475
日本語要約 | Full Text | PDF (243K)
地球：地球磁場逆転の継続時間の観測点緯度依存性
Dependence of the duration of geomagnetic polarity reversals on site latitude p637
環境：地球規模の保護地域ネットワークにおける種多様性反映の有効性
Effectiveness of the global protected area network in representing species diversity p640
Ana S. L. Rodrigues, Sandy J. Andelman, Mohamed I. Bakarr, Luigi Boitani, Thomas M. Brooks, Richard M. Cowling, Lincoln D. C. Fishpool, Gustavo A. B. da Fonseca, Kevin J. Gaston, Michael Hoffmann, Janice S. Long, Pablo A. Marquet, John D. Pilgrim, Robert L. Pressey, Jan Schipper, Wes Sechrest, Simon N. Stuart, Les G. Underhill, Robert W. Waller, Matthew E. J. Watts and Xie Yan
doi:10.1038/nature02422
進化：雪の吹きだまりゲームでは往々にして空間構造が協力の進化を妨げる
Spatial structure often inhibits the evolution of cooperation in the snowdrift game p643
Christoph Hauert and Michael Doebeli
doi:10.1038/nature02360
進化：有限集団における協力の出現と進化的な安定性
Emergence of cooperation and evolutionary stability in finite populations p646
Martin A. Nowak, Akira Sasaki, Christine Taylor and Drew Fudenberg
doi:10.1038/nature02414
日本語要約 | Full Text | PDF (240K)
進化：社会性をもつ前段階において長期の養育で生じる恩恵
Pre-social benefits of extended parental care p650
遺伝：極小単細胞紅藻Cyanidioschyzon merolae 10Dのゲノム配列
Genome sequence of the ultrasmall unicellular red alga Cyanidioschyzon merolae 10D p653
Motomichi Matsuzaki, Osami Misumi, Tadasu Shin-i, Shinichiro Maruyama, Manabu Takahara, Shin-ya Miyagishima, Toshiyuki Mori, Keiji Nishida, Fumi Yagisawa, Keishin Nishida, Yamato Yoshida, Yoshiki Nishimura, Shunsuke Nakao, Tamaki Kobayashi, Yu Momoyama, Tetsuya Higashiyama, Ayumi Minoda, Masako Sano, Hisayo Nomoto, Kazuko Oishi, Hiroko Hayashi, Fumiko Ohta, Satoko Nishizaka, Shinobu Haga, Sachiko Miura, Tomomi Morishita, Yukihiro Kabeya, Kimihiro Terasawa, Yutaka Suzuki, Yasuyuki Ishii, Shuichi Asakawa, Hiroyoshi Takano, Niji Ohta, Haruko Kuroiwa, Kan Tanaka, Nobuyoshi Shimizu, Sumio Sugano, Naoki Sato, Hisayoshi Nozaki, Naotake Ogasawara, Yuji Kohara and Tsuneyoshi Kuroiwa
doi:10.1038/nature02398
視覚：視覚探索後に長期間続く特定色への鋭敏化
Long-lasting sensitization to a given colour after visual search p657
Chia-huei Tseng, Joetta L. Gobell and George Sperling
doi:10.1038/nature02443
日本語要約 | Full Text | PDF (213K)
発生：IκB キナーゼ α は表皮での機能によって骨格と頭蓋顔面の形態形成を制御する
I
B kinase-
acts in the epidermis to control skeletal and craniofacial morphogenesis p660
Alok K. Sil, Shin Maeda, Yuji Sano, Dennis R. Roop and Michael Karin
doi:10.1038/nature02421
細胞：造血幹細胞は心筋梗塞部で心筋細胞に分化形質転換しない
Haematopoietic stem cells do not transdifferentiate into cardiac myocytes in myocardial infarcts p664
Charles E. Murry, Mark H. Soonpaa, Hans Reinecke, Hidehiro Nakajima, Hisako O. Nakajima, Michael Rubart, Kishore B. S. Pasumarthi, Jitka Ismail Virag, Stephen H. Bartelmez, Veronica Poppa, Gillian Bradford, Joshua D. Dowell, David A. Williams and Loren J. Field
doi:10.1038/nature02446
細胞：虚血心筋の造血幹細胞は成熟造血細胞となる運命をたどる
Haematopoietic stem cells adopt mature haematopoietic fates in ischaemic myocardium p668
Leora B. Balsam, Amy J. Wagers, Julie L. Christensen, Theo Kofidis, Irving L. Weissman and Robert C. Robbins
doi:10.1038/nature02460
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Special Report
Career View
Naturejobs
ProspectsHow to succeed in business p675
Special Report
Glittering prizes p676
Entrepreneur contests spark innovation and provide a practice run for start-ups. Kendall Powell sizes up the competitions.
Kendall Powell
doi:10.1038/nj6983-676a
Career View
