Content
March 2003, Volume 422, Issue 6927
- 7-7 Coal-fired power plant to bury issue of emissions
by Hannah Hoag - 7-7 Cancer risk prompts US to curb gene therapy
by Erika Check - 10-12 The coast road
by Rex Dalton - 13-14 The lab arm of the law
by Jim Giles - 15-15 The subtle beauty of art in the service of science
by Frank Ippolito - 15-15 No strings attached to $225m sponsorship
by Charles Kruger & Franklin M. Orr - 17-18 A champion of new technologies
by Ashok Parthasarathi - 19-20 Airbrushing science
by John Galloway - 20-21 Our cultural past
by Robert L. Bettinger - 21-22 Stormy weather in space
by Howard J. Singer - 22-22 Science in culture
by Michael Hopkin - 25-26 Speciation reversal
by Ken Wolfe - 26-27 Filling in the background
by Sean Carroll - 27-28 Fast and feel good?
by Vijay K. Kuchroo & Lindsay B. Nicholson - 28-29 DNA amplification moves on
by Andrew J. deMello - 29-29 The earlier bird
by Arie J. van Noordwijk - 30-31 Kuiper-belt interlopers
by A. Morbidelli & H. F. Levison - 31-32 Mobile plastid genes
by Pal Maliga - 35-35 Disease susceptibility in California sea lions
by Karina Acevedo-Whitehouse & Frances Gulland & Denise Greig & William Amos - 36-36 Is subliminal learning really passive?
by Aaron R. Seitz & Takeo Watanabe - 37-44 Regulated portals of entry into the cell
by Sean D. Conner & Sandra L. Schmid - 45-48 Formation of recent martian gullies through melting of extensive water-rich snow deposits
by Philip R. Christensen - 48-50 Three-dimensional imaging of atomic four-body processes
by M. Schulz & R. Moshammer & D. Fischer & H. Kollmus & D. H. Madison & S. Jones & J. Ullrich - 50-53 Ordering and manipulation of the magnetic moments in large-scale superconducting π-loop arrays
by Hans Hilgenkamp & Ariando & Henk-Jan H. Smilde & Dave H. A. Blank & Guus Rijnders & Horst Rogalla & John R. Kirtley & Chang C. Tsuei - 53-55 Superconductivity in two-dimensional CoO2 layers
by Kazunori Takada & Hiroya Sakurai & Eiji Takayama-Muromachi & Fujio Izumi & Ruben A. Dilanian & Takayoshi Sasaki - 55-58 Dynamical coupling of wind and ocean waves through wave-induced air flow
by T. S. Hristov & S. D. Miller & C. A. Friehe - 58-61 Iron–silica interaction at extreme conditions and the electrically conducting layer at the base of Earth's mantle
by L. Dubrovinsky & N. Dubrovinskaia & F. Langenhorst & D. Dobson & D. Rubie & C. Geßmann & I. A. Abrikosov & B. Johansson & V. I. Baykov & L. Vitos & T. Le Bihan & W. A. Crichton & V. Dmitriev & H.-P. Weber - 61-65 A Middle Miocene hominoid from Thailand and orangutan origins
by Yaowalak Chaimanee & Dominique Jolly & Mouloud Benammi & Paul Tafforeau & Danielle Duzer & Issam Moussa & Jean-Jacques Jaeger - 65-68 Species interactions can explain Taylor's power law for ecological time series
by A. M. Kilpatrick & A. R. Ives - 68-72 Engineering evolution to study speciation in yeasts
by Daniela Delneri & Isabelle Colson & Sofia Grammenoudi & Ian N. Roberts & Edward J. Louis & Stephen G. Oliver - 72-76 Direct measurement of the transfer rate of chloroplast DNA into the nucleus
by Chun Y. Huang & Michael A. Ayliffe & Jeremy N. Timmis - 76-80 Optimal transsaccadic integration explains distorted spatial perception
by Matthias Niemeier & J. Douglas Crawford & Douglas B. Tweed - 80-83 Monoclonal antibodies inhibit prion replication and delay the development of prion disease
by Anthony R. White & Perry Enever & Mourad Tayebi & Rosey Mushens & Jackie Linehan & Sebastian Brandner & David Anstee & John Collinge & Simon Hawke - 83-87 Apolipoprotein L-I is the trypanosome lytic factor of human serum
by Luc Vanhamme & Françoise Paturiaux-Hanocq & Philippe Poelvoorde & Derek P. Nolan & Laurence Lins & Jan Van Den Abbeele & Annette Pays & Patricia Tebabi & Huang Van Xong & Alain Jacquet & Nicole Moguilevsky & Marc Dieu & John P. Kane & Patrick De Baetselier & Robert Brasseur & Etienne Pays - 87-92 Regulated degradation of a class V myosin receptor directs movement of the yeast vacuole
by Fusheng Tang & Emily J. Kauffman & Jennifer L. Novak & Johnathan J. Nau & Natalie L. Catlett & Lois S. Weisman - 92-92 Retraction Note to: Superconductivity in CaCuO2 as a result of field-effect doping
by J. H. Schön & M. Dorget & F. C. Beuran & X. Z. Zu & E. Arushanov & C. Deville Cavellin & M. Laguës - 92-92 Retraction Note to: Self-assembled monolayer organic field-effect transistors
by Jan Hendrik Schön & Hong Meng & Zhenan Bao - 92-92 Retraction Note to: Gate-induced superconductivity in a solution-processed organic polymer film
by J. H. Schön & A. Dodabalapur & Z. Bao & Ch. Kloc & O. Schenker & B. Batlogg - 92-92 Retraction Note to: Superconductivity in single crystals of the fullerene C70
by J. H. Schön & Ch. Kloc & T. Siegrist & M. Steigerwald & C. Svensson & B. Batlogg - 93-93 Retraction Note to: Efficient organic photovoltaic diodes based on doped pentacene
by J. H. Schön & Ch. Kloc & E. Bucher & B. Batlogg - 93-93 Retraction Note to: Superconductivity at 52 K in hole-doped C60
by J. H. Schön & Ch. Kloc & B. Batlogg - 93-93 Retraction Note to: Superconductivity in molecular crystals induced by charge injection
by J. H. Schön & Ch. Kloc & B. Batlogg - 95-95 Recruitment blueprint
by Paul Smaglik - 96-97 Access delayed
by Karen Kreeger
February 2003, Volume 421, Issue 6926
- 877-877 Mixed results win HIV vaccine a guarded response
by Hannah Hoag - 877-878 Draft guidelines ease restrictions on use of genome sequence data
by Carina Dennis - 878-878 NASA seeks inspiration from microscopic views of life
by Jonathan Knight - 878-878 Physicists fail to find saving grace for falsified research
by Philip Ball - 879-879 Experts cast doubt on Britain's green energy ambitions
by Natasha McDowell - 879-879 Climate panel to seize political hot potatoes
by Quirin Schiermeier - 880-880 Genomes take pole position in the icy wastes
by Hannah Hoag - 880-880 Canada boosts spending on science
by David Spurgeon - 881-881 Europe draws up plans for funding agency
by Marieke Degen - 881-881 NASA pins hopes on nuclear-powered orbiter
by Tony Reichhardt - 884-886 The beat goes on
by Catherine Zandonella - 887-888 Avalanche!
by Quirin Schiermeier - 889-889 Objective assessment of transgenic salmon
by George Gray - 889-889 Switzerland's role as a hotspot of type specimens
by Donat Agosti & Peter Linder & Daniel Burckhardt & Sylvia Martinez & Ivan Löbl & Pierre André Loizeau - 889-889 Novel and conventional paths to a better banana
by David Jones - 891-892 Liability for climate change
by Myles Allen - 893-894 Feeling emotional
by Ray Dolan - 894-895 Riding the solar wind
by James A. Klimchuk - 895-895 Keeping up with evolution
by Joel Peck - 898-898 Ecological footprints: A blot on the land
by William E. Rees - 899-900 The weight of expectation
by C. D. Hoyle - 900-901 The how and why of biodiversity
by Kevin J. Gaston - 901-903 Lost terrains of early Earth
by Stein B. Jacobsen - 903-904 A twist in a mouse tale
by Nick Dyson - 904-905 The brawniest retroflection
by Arnold L. Gordon - 905-906 From embryo to axon
by Melissa M. Rolls & Chris Q. Doe - 909-910 A pre-industrial source of dioxins and furans
by Andrew A. Meharg & Kenneth Killham - 910-910 Worker nepotism among polygynous ants
by Minttumaaria Hannonen & Liselotte Sundström - 911-911 Implicit estimation of sound-arrival time
by Yoichi Sugita & Yôiti Suzuki - 911-912 The puzzle of human cooperation
by Dominic D. P. Johnson & Pavel Stopka & Stephen Knights - 912-912 The puzzle of human cooperation
by Ernst Fehr & Simon Gächter - 913-919 Fire science for rainforests
by Mark A. Cochrane - 920-922 Energetic neutral atoms from a trans-Europa gas torus at Jupiter
by B. H. Mauk & D. G. Mitchell & S. M. Krimigis & E. C. Roelof & C. P. Paranicas - 922-925 Upper limits to submillimetre-range forces from extra space-time dimensions
by Joshua C. Long & Hilton W. Chan & Allison B. Churnside & Eric A. Gulbis & Michael C. M. Varney & John C. Price - 925-928 Ultra-high-Q toroid microcavity on a chip
by D. K. Armani & T. J. Kippenberg & S. M. Spillane & K. J. Vahala - 928-931 Logarithmic rate dependence of force networks in sheared granular materials
by R. R. Hartley & R. P. Behringer - 931-933 Early history of Earth's crust–mantle system inferred from hafnium isotopes in chondrites
by Martin Bizzarro & Joel A. Baker & Henning Haack & David Ulfbeck & Minik Rosing - 933-936 Patterns and processes in reef fish diversity
by Camilo Mora & Paul M. Chittaro & Peter F. Sale & Jacob P. Kritzer & Stuart A. Ludsin - 936-939 Mechanism of genetic exchange in American trypanosomes
by Michael W. Gaunt & Matthew Yeo & Iain A. Frame & J. Russell Stothard & Hernan J. Carrasco & Martin C. Taylor & Susana Solis Mena & Paul Veazey & Graham A. J. Miles & Nidia Acosta & Antonieta Rojas de Arias & Michael A. Miles - 939-942 Water transport in plants obeys Murray's law
by Katherine A. McCulloh & John S. Sperry & Frederick R. Adler - 942-947 Extra-embryonic function of Rb is essential for embryonic development and viability
by Lizhao Wu & Alain de Bruin & Harold I. Saavedra & Maja Starovic & Anthony Trimboli & Ying Yang & Jana Opavska & Pamela Wilson & John C. Thompson & Michael C. Ostrowski & Thomas J. Rosol & Laura A. Woollett & Michael Weinstein & James C. Cross & Michael L. Robinson & Gustavo Leone - 948-952 Role for antisense RNA in regulating circadian clock function in Neurospora crassa
by Cas Kramer & Jennifer J. Loros & Jay C. Dunlap & Susan K. Crosthwaite - 952-956 MDC1 is required for the intra-S-phase DNA damage checkpoint
by Michal Goldberg & Manuel Stucki & Jacob Falck & Damien D'Amours & Dinah Rahman & Darryl Pappin & Jiri Bartek & Stephen P. Jackson - 957-961 MDC1 is coupled to activated CHK2 in mammalian DNA damage response pathways
by Zhenkun Lou & Katherine Minter-Dykhouse & Xianglin Wu & Junjie Chen - 961-966 MDC1 is a mediator of the mammalian DNA damage checkpoint
by Grant S. Stewart & Bin Wang & Colin R. Bignell & A. Malcolm R. Taylor & Stephen J. Elledge - 969-969 Ground control
by Paul Smaglik - 970-973 The data busters
by Kendall Powell
February 2003, Volume 421, Issue 6925
- 773-773 Nobel laureate slams misconduct smear
by Quirin Schiermeier - 773-774 Error reports threaten to unravel databases of mitochondrial DNA
by Carina Dennis - 774-774 Journals tighten up on biosecurity
by Erika Check - 774-774 Researchers fear the future as Congress settles 2003 budget
by Hannah Hoag - 775-775 Ministers back gene-crop advisers
by Declan Butler - 775-775 Paper retracted as co-author admits forgery
by David Adam - 776-776 Poor farmers warned against Internet transgenic crop deals
by Rex Dalton - 776-776 Dolly's death leaves researchers woolly on clone ageing issue
by Jim Giles & Jonathan Knight - 777-777 Windfall spurs rare Israeli–Palestinian research effort
by David Adam - 777-777 Cosmologists look forward to clearer picture
by Tony Reichhardt - 780-782 All together now
by Steve Nadis - 783-784 To the heart of glass
by Philip Ball - 785-785 Scientific freedom: new strategies are needed
by Jane Lubchenco & Thomas Rosswall & Peter Warren - 785-785 Scientific freedom: some face a lonely dilemma
by Roger Macy - 785-786 Gene flow might turn wimps into superweeds
by Norris Muth - 786-786 Eastern Europe nurtures talent for the West
by Juraj Gregan - 786-786 Venezuelan government is backing science
by Juan Luis Cabrera & Luis Emilio Guerrero & Arnaldo Donoso - 786-786 GreenSea's interest in fertilizing sea with iron
by M. Lee Rice - 786-786 Free access to publicly funded databases is vital
by Philip E. Bourne - 787-787 Biodefence on the research agenda
by Anthony S. Fauci - 789-790 Forever young
by Linda Partridge - 790-790 Bonding the two cultures
by John Emsley - 791-791 Soaking up the limelight
by Lorraine Berry - 791-792 Universal building blocks
by Carlton Baugh - 792-792 Science in culture
by Martin Kemp - 795-796 A fix for RNA
by Thomas J. Begley & Leona D. Samson - 796-797 The qubit duet
by Gianni Blatter - 797-799 Interneurons take charge
by Edvard I. Moser - 799-800 How self-organization evolves
by P. Kirk Visscher - 800-801 Polymers light the way
by Andrew Holmes - 801-802 Plugging the transport gap
by R. John Ellis - 802-803 Son et lumière
by John M. Worlock & Michael L. Roukes - 805-806 Severe summertime flooding in Europe
by Jens H. Christensen & Ole B. Christensen - 806-806 Correction: Ultrahard polycrystalline diamond from graphite
by T. Irifune & A. Kurio & S. Sakamoto & T. Inoue & H. Sumiya - 806-806 Parthenogenesis in an outsider crayfish
by Gerhard Scholtz & Anke Braband & Laura Tolley & André Reimann & Beate Mittmann & Chris Lukhaup & Frank Steuerwald & Günter Vogt - 807-814 An exceptionally preserved Lower Cretaceous ecosystem
by Zhonghe Zhou & Paul M. Barrett & Jason Hilton - 815-820 The importance of water to oceanic mantle melting regimes
by P. D. Asimow & C. H. Langmuir - 821-823 Investigation of the obscuring circumnuclear torus in the active galaxy Mrk231
by Hans-Rainer Klöckner & Willem A. Baan & Michael A. Garrett - 823-826 Quantum oscillations in two coupled charge qubits
by Yu. A. Pashkin & T. Yamamoto & O. Astafiev & Y. Nakamura & D. V. Averin & J. S. Tsai - 826-829 Probing molecular dynamics with attosecond resolution using correlated wave packet pairs
by Hiromichi Niikura & F. Légaré & R. Hasbani & Misha Yu Ivanov & D. M. Villeneuve & P. B. Corkum - 829-833 Multi-colour organic light-emitting displays by solution processing
by C. David Müller & Aurélie Falcou & Nina Reckefuss & Markus Rojahn & Valèrie Wiederhirn & Paula Rudati & Holger Frohne & Oskar Nuyken & Heinrich Becker & Klaus Meerholz - 833-837 Precise dating of Dansgaard–Oeschger climate oscillations in western Europe from stalagmite data
by D. Genty & D. Blamart & R. Ouahdi & M. Gilmour & A. Baker & J. Jouzel & Sandra Van-Exter - 837-840 New ages for human occupation and climatic change at Lake Mungo, Australia
by James M. Bowler & Harvey Johnston & Jon M. Olley & John R. Prescott & Richard G. Roberts & Wilfred Shawcross & Nigel A. Spooner - 841-843 Architecture and material properties of diatom shells provide effective mechanical protection
by Christian E. Hamm & Rudolf Merkel & Olaf Springer & Piotr Jurkojc & Christian Maier & Kathrin Prechtel & Victor Smetacek - 844-848 Brain-state- and cell-type-specific firing of hippocampal interneurons in vivo
by Thomas Klausberger & Peter J. Magill & László F. Márton & J. David B. Roberts & Philip M. Cobden & György Buzsáki & Peter Somogyi - 848-852 Yeast genome duplication was followed by asynchronous differentiation of duplicated genes
by Rikke B. LangkjAEr & Paul F. Cliften & Mark Johnston & Jure Piškur - 852-856 CD4+ T cells are required for secondary expansion and memory in CD8+ T lymphocytes
by Edith M. Janssen & Edward E. Lemmens & Tom Wolfe & Urs Christen & Matthias G. von Herrath & Stephen P. Schoenberger - 856-859 STAT3 signalling is required for leptin regulation of energy balance but not reproduction
by Sarah H. Bates & Walter H. Stearns & Trevor A. Dundon & Markus Schubert & Annette W. K. Tso & Yongping Wang & Alexander S. Banks & Hugh J. Lavery & Asma K. Haq & Eleftheria Maratos-Flier & Benjamin G. Neel & Michael W. Schwartz & Martin G. Myers - 859-863 Human and bacterial oxidative demethylases repair alkylation damage in both RNA and DNA
by Per Arne Aas & Marit Otterlei & Pål Ø. Falnes & Cathrine B. Vågbø & Frank Skorpen & Mansour Akbari & Ottar Sundheim & Magnar Bjørås & Geir Slupphaug & Erling Seeberg & Hans E. Krokan - 863-867 The complete folding pathway of a protein from nanoseconds to microseconds
by Ugo Mayor & Nicholas R. Guydosh & Christopher M. Johnson & J. Günter Grossmann & Satoshi Sato & Gouri S. Jas & Stefan M. V. Freund & Darwin O. V. Alonso & Valerie Daggett & Alan R. Fersht - 871-871 Capturing competencies
by Paul Smaglik - 872-873 Forensic science
by Susan Myers
February 2003, Volume 421, Issue 6924
- 677-677 Biologists wary that cash up front could mean cuts later
by Erika Check - 677-678 Shuttle inquiry to piece disaster together from the ground up
by Declan Butler - 678-678 Cancer fears cast doubts on future of gene therapy
by Erika Check - 678-678 DNA study deepens rift over Iceland's genetic heritage
by Alison Abbott - 679-679 Long-lost wave report sinks asteroid impact theory
by Rex Dalton - 679-679 London gears up for road congestion charge
by David Adam - 680-680 Civil war leaves Ivory Coast research in tatters
by Marieke Degen - 680-680 Hints of age bias spur calls for grant reforms
by David Cyranoski & Keiko Kandachi - 681-681 Social scientists call for abolition of dishonesty committee
by Alison Abbott - 681-681 India debates results of its first transgenic cotton crop
by K. S. Jayaraman - 684-685 On wings and a prayer
by Geoff Brumfiel - 686-688 Altered states
by Carina Dennis - 689-689 Concern about Japan's unclear biotech regulations
by Kazuo N. Watanabe - 689-689 Reviewing should be shown in publication list
by Torben Clausen & Ole Bækgaard Nielsen - 689-689 Flying into history
by Jürgen Schmidhuber - 691-692 Toxicology rethinks its central belief
by Edward J Calabrese & Linda A Baldwin - 693-693 Testing time for Russian lessons
by Valery N. Soyfer - 694-695 Looking up to the stars
by Owen Gingerich - 695-695 A trick of the moonlight
by Maurice Hershenson - 699-699 Thermohaline circulation: The current climate
by Stefan Rahmstorf - 701-702 A magnificent machine
by Richard B. Vallee & Peter Höök - 702-703 The quantum of area?
by John Baez - 703-705 Border crossings
by Ann Ager - 705-706 Dishing the dirt on coral reefs
by Julia Cole - 706-707 A case of mistaken identity
by Wendy T. Watford & John J. O'Shea - 708-708 Hot gas around the Galaxy
by Amiel Sternberg - 711-711 Adult persistence of head-turning asymmetry
by Onur Güntürkün - 711-712 Volcanism or aqueous alteration on Mars?
by Victoria E. Hamilton & Philip R. Christensen & Joshua L. Bandfield - 712-713 Volcanism or aqueous alteration on Mars?
by Michael B. Wyatt & Harry Y. McSween - 713-713 Why does metabolic rate scale with body size?
by Geoffrey B. West & Van M. Savage & James Gillooly & Brian J. Enquist & William H. Woodruff & James H. Brown - 713-714 Allometric cascades
by Jayanth R. Banavar & John Damuth & Amos Maritan & Andrea Rinaldo - 714-714 Why does metabolic rate scale with body size?/Allometric cascades
by Charles-A. Darveau & Raul K. Suarez & Russel D. Andrews & Peter W. Hochachka - 715-718 Dynein structure and power stroke
by Stan A. Burgess & Matt L. Walker & Hitoshi Sakakibara & Peter J. Knight & Kazuhiro Oiwa - 719-721 The far-ultraviolet signature of the ‘missing’ baryons in the Local Group of galaxies
by Fabrizio Nicastro & Andreas Zezas & Martin Elvis & Smita Mathur & Fabrizio Fiore & Cesare Cecchi-Pestellini & Douglas Burke & Jeremy Drake & Piergiorgio Casella - 721-725 Experimental realization of freely propagating teleported qubits
by Jian-Wei Pan & Sara Gasparoni & Markus Aspelmeyer & Thomas Jennewein & Anton Zeilinger - 725-727 A stable silicon-based allene analogue with a formally sp-hybridized silicon atom
by S. Ishida & T. Iwamoto & C. Kabuto & M. Kira - 727-730 Coral record of increased sediment flux to the inner Great Barrier Reef since European settlement
by Malcolm McCulloch & Stewart Fallon & Timothy Wyndham & Erica Hendy & Janice Lough & David Barnes - 731-733 A discontinuity in mantle composition beneath the southwest Indian ridge
by Christine M. Meyzen & Michael J. Toplis & Eric Humler & John N. Ludden & Catherine Mével - 734-737 Single origin of Malagasy Carnivora from an African ancestor
by Anne D. Yoder & Melissa M. Burns & Sarah Zehr & Thomas Delefosse & Geraldine Veron & Steven M. Goodman & John J. Flynn - 737-739 The effect of aggressiveness on the population dynamics of a territorial bird
by F. Mougeot & S. M. Redpath & F. Leckie & P. J. Hudson - 740-743 Auxin promotes Arabidopsis root growth by modulating gibberellin response
by Xiangdong Fu & Nicholas P. Harberd - 744-748 Interleukin-23 rather than interleukin-12 is the critical cytokine for autoimmune inflammation of the brain
by Daniel J. Cua & Jonathan Sherlock & Yi Chen & Craig A. Murphy & Barbara Joyce & Brian Seymour & Linda Lucian & Wayne To & Sylvia Kwan & Tatyana Churakova & Sandra Zurawski & Maria Wiekowski & Sergio A. Lira & Daniel Gorman & Robert A. Kastelein & Jonathon D. Sedgwick - 748-753 Targeted recycling of PECAM from endothelial surface-connected compartments during diapedesis
by Zahra Mamdouh & Xia Chen & Lynda M. Pierini & Frederick R. Maxfield & William A. Muller - 753-756 Cdc42 regulates GSK-3β and adenomatous polyposis coli to control cell polarity
by Sandrine Etienne-Manneville & Alan Hall - 756-760 Structure of the extracellular region of HER2 alone and in complex with the Herceptin Fab
by Hyun-Soo Cho & Karen Mason & Kasra X. Ramyar & Ann Marie Stanley & Sandra B. Gabelli & Dan W. Denney & Daniel J. Leahy - 760-764 Crystal structure of the specificity domain of ribonuclease P
by Andrey S. Krasilnikov & Xiaojing Yang & Tao Pan & Alfonso Mondragón - 764-764 Retraction Note to: Metal–insulator transition in chains with correlated disorder
by Pedro Carpena & Pedro Bernaola-Galván & Plamen Ch. Ivanov & H. Eugene Stanley - 764-764 Erratum: Wave-like properties of solar supergranulation
by L. Gizon & T. L. Duvall & J. Schou - 764-764 Retraction Note to: A cytosolic catalase is needed to extend adult lifespan in C. elegans daf-C and clk-1 mutants
by J. Taub & J. F. Lau & C. Ma & J. H. Hahn & R. Hoque & J. Rothblatt & M. Chalfie - 765-765 A moving story
by Paul Smaglik - 766-767 Location, location, location
by Karen Kreeger
February 2003, Volume 421, Issue 6923
- 561-561 NASA sets up dual probes into shuttle accident
by Geoff Brumfiel - 561-562 Columbia explosion may trigger fatal delays for space station
by Tony Reichhardt - 562-562 Science had rare leading role in ill-starred shuttle mission
by David Adam