The world's poorest continent is rightly at the top of the global agenda this year. But the agenda needs to be set by Africa, with the outside world in a supporting role — not the other way round.
doi:10.1038/433669a
Table of contents
Volume 433 Number 7027 pp669-784
In this issue (17 February 2005)
Also this week
Top of page
News
Salt sellers challenge US health agency using data-quality act p671
Industry fights for access to data showing salt and blood pressure link.
Meredith Wadman
doi:10.1038/433671a
US extends security clearance for scholars p672
Visa-related checks to remain valid for up to four years.
Geoff Brumfiel
doi:10.1038/433672a
Nuclear-physics research falls foul of budget cuts p672
Physics spending to drop 4% in Bush administration proposal.
Jessica Ebert
doi:10.1038/433672b
Online access offers fresh scope for bug identification p673
Remote-control microscope to ease work in taxonomy.
Jim Giles
doi:10.1038/433673a
Europe's research still lacks competitive edge, says panel p673
Five-year assessment of Framework funding comes to sober conclusion.
Quirin Schiermeier
doi:10.1038/433673b
Scientists urged to end feud with White House p674
Former science adviser says now is the time for a fresh start.
Geoff Brumfiel
doi:10.1038/433674a
Sanctions agreed over teenager's gene-therapy death p674
Out-of-court settlement ends five-year investigation into trial.
Erika Check
doi:10.1038/433674b
India's nuclear debate hots up after tsunami floods reactor p675
Fast-breeder prototype open to fresh debate after 26 December disaster.
K. S. Jayaraman
doi:10.1038/433675a
Global geoscience suffers as UNESCO curtails funding p675
Star of UN Earth sciences programme faces serious cuts.
Quirin Schiermeier
doi:10.1038/433675b
Top of page
News Features
Space technology: Setting sail for history p678
A small budget and big dreams make for a heady mix. But solar-sail pioneer Lou Friedman is ready for anything as spacecraft Cosmos 1 prepares to take on the Sun and the space agencies. Tony Reichhardt reports.
Tony Reichhardt
doi:10.1038/433678a
Cell biology: Hopping fences p680
Just how proteins jostle around in the fatty membrane that surrounds every living cell has been a source of debate for decades. Now one researcher is using an ultra-high-speed camera to watch this dance in unprecedented detail — but that hasn't stopped the arguments. Alison Abbott investigates.
Alison Abbott
doi:10.1038/433680a
Top of page
Correspondence
No political will to seek innovative contraception p683
Focus instead on other reproductive issues, which may make birth-control superfluous.
Carl Djerassi
doi:10.1038/433683a
Emissions control needs atmospheric verification p683
Top of page
Books and Arts
In search of weighty matters p685
A hard look at the 45-year quest to detect gravitational radiation.
doi:10.1038/433685a
Watson's way with words p686
doi:10.1038/433686a
Science in culture p687
The Queen Anne churches in east London were precisely aligned on an east–west axis.
doi:10.1038/433687a
The rise of the professional p688
doi:10.1038/433688a
Top of page
News and Views
光電子光学：光るシリコン
Optoelectronics: Silicon shines on p691
Researchers are getting better at making silicon do what it really does not like to do — emit light. A silicon laser is now demonstrated that has promising features for future practical applications.
Jerome Faist
doi:10.1038/433691a
細胞生物学：分割して統治する
Cell biology: Divide and conquer p692
The discovery that cell death in nematode worms induces fragmentation of mitochondria reveals a new parallel to the death process in mammals, and may shed light on why mitochondria divide in death.
Michael Hengartner
doi:10.1038/433692a
表面化学：油滴のアクロバット
Surface chemistry: Oiled acrobatics p693
進化生物学：自然淘汰の力
Evolutionary biology: The power of natural selection p694
Adaptation by natural selection is the centrepiece of biology. Yet evolutionary biologists may be deluding themselves if they think they have a good handle on the typical strength of selection in nature.
Andrew P. Hendry
doi:10.1038/433694a
惑星科学：土星の混合型磁気圏
Planetary science: Saturn's mixed magnetosphere p695
When interplanetary shock waves hit the Cassini spacecraft and then Saturn in January 2004, it presented a unique opportunity to study the planet's magnetosphere and to compare it with that of Earth.
Fran Bagenal
doi:10.1038/433695a
100 and 50 years ago p695
doi:10.1038/433695b
神経変性：細胞の防御体制が破壊されるとき
Neurodegeneration: Cellular defences destroyed p696
A lack of blood flow can kill nerve cells, by causing a massive influx of calcium ions. But what's happened to the cellular mechanisms for coping with excess calcium?
Dennis W. Choi
doi:10.1038/433696a
神経生物学：明るく晴れた時間
Neurobiology: Bright blue times p698
The discovery of light-sensitive neurons that can adjust our body clocks prompted a search for their light-detecting molecule. We now know the identity of this pigment — and that these cells do more than was thought.
Russell G. Foster
doi:10.1038/433698a
追悼：Ernst Mayr氏 (1904-2005)
Obituary: Ernst Mayr (1904–2005) p700
Top of page
Brief Communications
Insect behaviour: Migratory bands give crickets protection p703
Predators are not so lucky in picking out a flightless insect from a marching mass.
Gregory A. Sword, Patrick D. Lorch and Darryl T. Gwynne
doi:10.1038/433703a
First paragraph | Full Text | PDF (259K) | Supplementary information
Chemical communication: Butterfly anti-aphrodisiac lures parasitic wasps p704
Nina E. Fatouros, Martinus E. Huigens, Joop J. A. van Loon, Marcel Dicke and Monika Hilker
doi:10.1038/433704a
First paragraph | Full Text | PDF (237K) | Supplementary information
wiok,
P.-H. Heenen
and
W. NazarewiczTop of page
Article
発達：鳥の歌の発達的学習への睡眠の影響
How sleep affects the developmental learning of bird song p710
Sébastien Derégnaucourt, Partha P. Mitra, Olga Fehér, Carolyn Pytte and Ofer Tchernichovski
doi:10.1038/nature03275
日本語要約 | Full Text | PDF (1,656K) | Supplementary information
Top of page
Letters to Nature
宇宙：土星の紫外オーロラと地球および木星のオーロラとの形態学的差異
Morphological differences between Saturn's ultraviolet aurorae and those of Earth and Jupiter p717
J. T. Clarke, J.-C. Gérard, D. Grodent, S. Wannawichian, J. Gustin, J. Connerney, F. Crary, M. Dougherty, W. Kurth, S. W. H. Cowley, E. J. Bunce, T. Hill and J. Kim
doi:10.1038/nature03331
日本語要約 | Full Text | PDF (243K)
宇宙：土星のオーロラを支配している主要因としての太陽風動圧と電場
Solar wind dynamic pressure and electric field as the main factors controlling Saturn's aurorae p720
F. J. Crary, J. T. Clarke, M. K. Dougherty, P. G. Hanlon, K. C. Hansen, J. T. Steinberg, B. L. Barraclough, A. J. Coates, J.-C. Gérard, D. Grodent, W. S. Kurth, D. G. Mitchell, A. M. Rymer and D. T. Young
doi:10.1038/nature03333
宇宙：土星のオーロラの性質と電波放射との間の地球に似た対応
An Earth-like correspondence between Saturn's auroral features and radio emission p722
W. S. Kurth, D. A. Gurnett, J. T. Clarke, P. Zarka, M. D. Desch, M. L. Kaiser, B. Cecconi, A. Lecacheux, W. M. Farrell, P. Galopeau, J.-C. Gérard, D. Grodent, R. Prangé, M. K. Dougherty and F. J. Crary
doi:10.1038/nature03334
日本語要約 | Full Text | PDF (319K)
物理：連続波ラマンシリコンレーザー
A continuous-wave Raman silicon laser p725
Haisheng Rong, Richard Jones, Ansheng Liu, Oded Cohen, Dani Hak, Alexander Fang and Mario Paniccia
doi:10.1038/nature03346
日本語要約 | Full Text | PDF (298K)
地球：陸上のケイ素循環と流域への流出に対する生物学的支配
Biological control of terrestrial silica cycling and export fluxes to watersheds p728
Louis A. Derry, Andrew C. Kurtz, Karen Ziegler and Oliver A. Chadwick
doi:10.1038/nature03299
地球：カンラン石の滑り方向と地球上部マントル地震学的異方性の圧力依存性
Pressure sensitivity of olivine slip systems and seismic anisotropy of Earth's upper mantle p731
David Mainprice, Andréa Tommasi, Hélène Couvy, Patrick Cordier and Daniel J. Frost
doi:10.1038/nature03266
日本語要約 | Full Text | PDF (471K)
進化：エチオピアのキビシュで出土した現生人類の層序学的位置づけと年代
Stratigraphic placement and age of modern humans from Kibish, Ethiopia p733
Ian McDougall, Francis H. Brown and John G. Fleagle
doi:10.1038/nature03258
生態：寄生虫と気候がアカライチョウ個体群同士を同期させる
Parasites and climate synchronize red grouse populations p737
Isabella M. Cattadori, Daniel T. Haydon and Peter J. Hudson
doi:10.1038/nature03276
生化学：ヒトのメラノプシンが添加された哺乳類細胞は光応答性となる
Addition of human melanopsin renders mammalian cells photoresponsive p741
Z. Melyan, E. E. Tarttelin, J. Bellingham, R. J. Lucas and M. W. Hankins
doi:10.1038/nature03344
細胞：メラノプシンの異種発現による光感受性の誘導
Induction of photosensitivity by heterologous expression of melanopsin p745
Xudong Qiu, Tida Kumbalasiri, Stephanie M. Carlson, Kwoon Y. Wong, Vanitha Krishna, Ignacio Provencio and David M. Berson
doi:10.1038/nature03345
視覚：霊長類網膜中のメラノプシン発現神経節細胞は色と照度をシグナルとしてLGNに投射する
Melanopsin-expressing ganglion cells in primate retina signal colour and irradiance and project to the LGN p749
Dennis M. Dacey, Hsi-Wen Liao, Beth B. Peterson, Farrel R. Robinson, Vivianne C. Smith, Joel Pokorny, King-Wai Yau and Paul D. Gamlin
doi:10.1038/nature03387
細胞：EGL-1が誘発する線虫の細胞死におけるDRP-1を介したミトコンドリアの断片化
DRP-1-mediated mitochondrial fragmentation during EGL-1-induced cell death in C. elegans p754
Ravi Jagasia, Phillip Grote, Benedikt Westermann and Barbara Conradt
doi:10.1038/nature03316
細胞：幼若な全身環境への曝露による老化した前駆細胞の若返り
Rejuvenation of aged progenitor cells by exposure to a young systemic environment p760
Irina M. Conboy, Michael J. Conboy, Amy J. Wagers, Eric R. Girma, Irving L. Weissman and Thomas A. Rando
doi:10.1038/nature03260
細胞：MitfはRb1と協同しp21Cip1の発現を活性化して細胞周期の進行を制御する
Mitf cooperates with Rb1 and activates p21Cip1 expression to regulate cell cycle progression p764
Suzanne Carreira, Jane Goodall, Isil Aksan, S. Anna La Rocca, Marie-Dominique Galibert, Laurence Denat, Lionel Larue and Colin R. Goding
doi:10.1038/nature03269
日本語要約 | Full Text | PDF (507K)
生化学：マイクロアレイ解析で明らかになった一部のマイクロRNAによる、多数の標的mRNAの下方制御
Microarray analysis shows that some microRNAs downregulate large numbers of target mRNAs p769
Lee P. Lim, Nelson C. Lau, Philip Garrett-Engele, Andrew Grimson, Janell M. Schelter, John Castle, David P. Bartel, Peter S. Linsley and Jason M. Johnson
doi:10.1038/nature03315
生化学：1分子F1-ATPアーゼによる高効率のATP合成
Highly coupled ATP synthesis by F1-ATPase single molecules p773
Yannick Rondelez, Guillaume Tresset, Takako Nakashima, Yasuyuki Kato-Yamada, Hiroyuki Fujita, Shoji Takeuchi and Hiroyuki Noji
doi:10.1038/nature03277
corrigendum: Sequence and comparative analysis of the chicken genome provide unique perspectives on vertebrate evolution p777
Top of page
Postdocs
Career View
Naturejobs
ProspectsCultivating black gold p779
Postdocs
Baby blues p780
Are women being held back by an 'innate difference': their ability to give birth? With better academic policies, motherhood and scientific excellence would not seem mutually exclusive, says Virginia Gewin.
Virginia Gewin
doi:10.1038/nj7027-780a
Career View
