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Science RSS FeedsThis Week in Science - A Closer Look | See-Through Perovskite | Solid State in a Cloud of Atoms | A Tunnel Clock | Bio-Inspired Materials Engineering | Martian Rhythmic Rocks | Blue-Light Response | A Matter of Life and Death | A Divisive Tale | How to Feed Your Neurons | Tolerating Maternal Influences | Toward Normalizing Metabolic Regulation | What Is Behind the Secondary Inward Current? | Selfish Flowers...Feed Source: www.sciencemag.org Editors' Choice - PLANT BIOLOGY: A Question of Color | APPLIED PHYSICS: Get IT Down on Paper | CHEMISTRY: Spinning Bases | MICROBIOLOGY: Cation Catcher | GEOPHYSICS: Soft Vibrations | CELL BIOLOGY: Roping in Rabs | BIOMEDICINE: Clues from Outside... Science Scope - NEON Prototype Debuts | Stem Cell Patent Nixed | Become a ScienceInsider | Biologist's Legal Battle Ends | Coral Reefs Still Reeling | Bright Future for X-rays... Random Samples - MOLECULAR MATCH FOR MAN WHO MOVED THE EARTH | SOAKING UP SOME RAYS | DÉJÀ VU: A TWITCH IN THE BRAIN | ART ON THE FLY... Newsmakers - NONPROFIT WORLD | MONEY MATTERS | MILESTONES | DATA POINT | THEY SAID IT... [EDITORIAL] A Scientific Approach to Policy - Author: Bruce Alberts... [NEWS] ASTRONOMY: Three Asian Nations Link Up to Form a Formidable Radio Telescope Array - South Korea's first very long baseline interferometry array is being completed this week. Linked to arrays in Japan and China, Korea's three instruments will fill out the densest network of its kind.Author: Dennis Normile... [NEWS] EUROPE: Ministers Bankroll European Space Agency's Ambitions - Europe's space scientists are breathing a collective sigh of relief because the member governments of the European Space Agency last week gave ESA more or less everything it had asked for in funding for the next few years--a total of nearly ?10 billion.Author: Daniel Clery... [NEWS] MENINGITIS: Less Vaccine Can Be More - A team of epidemiologists reported this week that just one-fifth of the standard meningitis vaccine dose triggers an immune response almost as good as that of the full dose, offering a way to potentially stretch limited supplies.Author: Martin Enserink... [NEWS] ARMS CONTROL: In Rare Encounter, U.S. and Chinese Scientists Craft Nuclear Glossary - On 20 November, the U.S. National Academies, seeking to reduce misunderstandings between China and the United States, unveiled the first Chinese-English glossary of nearly 1000 nuclear-security terms.Author: Richard Stone... [NEWS] IMMUNOLOGY: Fetal Immune System Hushes Attacks on Maternal Cells - On page 1562 of this week's issue of Science, researchers provide an explanation for why some maternal cells that cross the placenta escape attack by the fetal immune system. The work also suggests a new mechanism for how the human immune system learns to spare the body's own tissues, a tolerance that breaks down in autoimmune diseases.Author: Mitch Leslie... [NEWS] AIDS RESEARCH: Treat Everyone Now? A 'Radical' Model to Stop HIV's Spread - Last week, the World Health Organization published a provocative model that explores the possibility of "eliminating" the HIV epidemic by annually testing everyone on a voluntary basis and treating all infected people, regardless of their clinical status.Author: Jon Cohen... [NEWS FOCUS] GENETICS: Hopping to a Better Protein - Clinical trials are under way to test an innovative use of antisense technology to stem paralysis in Duchenne muscular dystrophy.Author: Elizabeth Pennisi... [NEWS FOCUS] ENDANGERED SPECIES: Sanctuaries Aim to Preserve a Model Organism's Wild Type - The axolotl, a salamander that retains unique evolutionary features and is a darling of biologists because it can regenerate limbs, faces adversity on two fronts.Author: Robert Koenig... [NEWS FOCUS] SCIENCE POLICY: Philippines Plans Research Revival - The Philippines government is hoping to reinvigorate its science base by improving science education, expanding scholarship programs, and raising research spending. But will it be enough to lure back expatriate scientists?Author: Dennis Normile... [NEWS FOCUS] TISSUE ENGINEERING: Coming Soon to a Knee Near You: Cartilage Like Your Very Own - Weaving materials science and biology together, researchers are drawing closer to the elusive goal of recreating tissues that do the body's work, such as cartilage and muscle.Author: Robert F. Service... [LETTERS] Spore Show Not Gaming the Science System - Author: Michael Rosenfeld... [LETTERS] Limiting the Impact of the Impact Factor - Author: Jeremy B. A. Green... [LETTERS] Putting Materials and Methods in Their Place - Author: Daniel Shriner... [LETTERS] Artificial Intelligence Disappoints - Author: Giovanni Vannucci... [LETTERS] ChemCam's Cost a Drop in the Mars Bucket - Authors: Roger C. Wiens, Sylvestre Maurice... [LETTERS] An Order of Plumpy'nut, Hold the Aflatoxins - Authors: Christopher Paulwild, Ruggero Montesano... [LETTERS] In Defense of GM Crops - Author: Niklaus H. Ammann... [TECHNICAL COMMENT] Comment on ?Phytoplankton Calcification in a High-CO2 World? - Authors: Ulf Riebesell, Richard G. J. Bellerby, Anja Engel, Victoria J. Fabry, David A. Hutchins, Thorsten B. H. Reusch, Kai G. Schulz, François M. M. Morel... [TECHNICAL RESPONSE] Response to Comment on ?Phytoplankton Calcification in a High-CO2 World? - Authors: M. Debora Iglesias-Rodriguez, Erik T. Buitenhuis, John A. Raven, Oscar Schofield, Alex J. Poulton, Samantha Gibbs, Paul R. Halloran, Hein J. W. de Baar... [BOOKS ET AL.] FOR YOUNGER READERS: Science Books for Fun and Learning--Some Recommendations from 2008 - To aid those seeking gifts for younger readers, we present the 19 finalists for the four 2009 Science Books and Films Prizes for Excellence in Science Books.Authors: Heather Malcomson, Barbara Jasny, Sherman Suter... [POLICY FORUM] SOCIOLOGY: The Gender Gap in NIH Grant Applications - Many qualified women scientists stop applying for NIH grants in the late postdoctoral and early faculty years.Authors: Timothy J. Ley, Barton H. Hamilton... [POLICY FORUM] POLICY: Science Policy in Kazakhstan - Although the president of Kazakhstan advocates improving science and technology infrastructure, little has been done.Author: Glenn E. Schweitzer... [PERSPECTIVES] ASTRONOMY: How Cold Is Cold Dark Matter? - Identification of the particles that constitute dark matter would revolutionize particle physics and the astrophysics of galaxy formation.Author: Gerard Gilmore... [PERSPECTIVES] CHEMISTRY: A Curious Antipathy for Water - How does water meet a hydrophobic surface? Like great art, everyone recognizes hydrophobicity but few agree on the details.Authors: Steve Granick, Sung Chul Bae... [PERSPECTIVES] ECOLOGY: Crops for a Salinized World - Cultivation of salt-tolerant crops can help address the threats of irreversible global salinization of fresh water and soils.Authors: Jelte Rozema, Timothy Flowers... [PERSPECTIVES] PHYSICS: Controlling Cold-Atom Conductivity - Models of electron conductivity in solids can be studied with ultracold atoms trapped in artificial crystals by lasers.Authors: L. Fallani, M. Inguscio... [PERSPECTIVES] OCEANS: Elements and Evolution - Changes in elemental abundances in Earth's oceans on geological time scales are intimately linked to evolutionary processes.Author: Ariel D. Anbar... [PERSPECTIVES] CELL SIGNALING: Fat Stress and Liver Resistance - Communication among immune and fat cells in adipose tissue and liver hepatocytes underlies the pathogenesis of obesity-related insulin resistance.Authors: Wataru Ogawa, Masato Kasuga... [PERSPECTIVES] EVOLUTION: Competitive Centromeres - Divergence in DNA sequence associated with a common chromosomal element is linked to fitness and evolution of a wild species of flower.Author: Deborah Charlesworth... [ESSAYS] GE PRIZE ESSAY: Understanding a Minimal DNA-Segregating Machine - Reconstitution of a plasmid spindle shows how three components together accomplish the task of DNA segregation.Author: Ethan Clark Garner... [SPECIAL SECTION] New Release: The Complete Guide to Organ Repair - Author: Beverly Purnell... [SPECIAL ISSUE REVIEWS] Generation and Regeneration of Cells of the Liver and Pancreas - Authors: Kenneth S. Zaret, Markus Grompe... [SPECIAL ISSUE REVIEWS] Cardiogenesis and the Complex Biology of Regenerative Cardiovascular Medicine - Authors: Kenneth R. Chien, Ibrahim J. Domian, Kevin Kit Parker... [SPECIAL ISSUE REVIEWS] Origin of Stem Cells in Organogenesis - Author: J. M. W. Slack... [SPECIAL ISSUE REVIEWS] Morphogenetic Cell Movements: Diversity from Modular Mechanical Properties - Author: Denise J. Montell... [SPECIAL ISSUE REVIEWS] Patterning Mechanisms of Branched Organs - Authors: Pengfei Lu, Zena Werb... [BREVIA] The Long-Run Benefits of Punishment - In human social groups, punishment of uncooperative behaviors increases teamwork, but the benefits of cooperation only outweigh the costs of punishment after a long time. Authors: Simon Gächter, Elke Renner, Martin Sefton... [RESEARCH ARTICLES] Dynamic Proteomics of Individual Cancer Cells in Response to a Drug - Cells that escape death from a chemotherapy drug express a different array of proteins than do genetically identical cells that die, which may help to inform cancer therapeutics. Authors: A. A. Cohen, N. Geva-Zatorsky, E. Eden, M. Frenkel-Morgenstern, I. Issaeva, A. Sigal, R. Milo, C. Cohen-Saidon, Y. Liron, Z. Kam, L. Cohen, T. Danon, N. Perzov, U. Alon... [RESEARCH ARTICLES] Tough, Bio-Inspired Hybrid Materials - Lamellar ice is used as a template to form an aluminum oxide scaffold that can be pressed and filled with a polymer, producing a tough layered structure reminiscent of nacre. Authors: E. Munch, M. E. Launey, D. H. Alsem, E. Saiz, A. P. Tomsia, R. O. Ritchie... [RESEARCH ARTICLES] Metallic and Insulating Phases of Repulsively Interacting Fermions in a 3D Optical Lattice - A cold atom cloud confined to an optical lattice can be tuned from a metal to an insulator. Authors: U. Schneider, L. Hackermüller, S. Will, Th. Best, I. Bloch, T. A. Costi, R. W. Helmes, D. Rasch, A. Rosch... [REPORTS] Attosecond Ionization and Tunneling Delay Time Measurements in Helium - A technique based on resolving the momentum of an electron escaping from a helium atom in an elliptically polarized light field clocks tunneling at less than 34 attoseconds. Authors: P. Eckle, A. N. Pfeiffer, C. Cirelli, A. Staudte, R. Dörner, H. G. Muller, M. Büttiker, U. Keller... [REPORTS] Optical Absorption and Radiative Thermal Conductivity of Silicate Perovskite to 125 Gigapascals - At high pressures, silicate perovskite, abundant in Earth's mantle, is not opaque to optical and infrared light, implying that radiative heat flow is important in the deep Earth. Authors: Hans Keppler, Leonid S. Dubrovinsky, Olga Narygina, Innokenty Kantor... [REPORTS] Quasi-Periodic Bedding in the Sedimentary Rock Record of Mars - Stereo topographic mapping on mars shows that some large impact craters were filled with sedimentary rock sequences made up of cyclical packages of meter-scaled beds. Authors: Kevin W. Lewis, Oded Aharonson, John P. Grotzinger, Randolph L. Kirk, Alfred S. McEwen, Terry-Ann Suer... [REPORTS] Photoexcited CRY2 Interacts with CIB1 to Regulate Transcription and Floral Initiation in Arabidopsis - Blue light triggers the association of a photoreceptor, transcription factor, and DNA site, thus inducing expression for the gene FT (flowering time) and initiating flowering. Authors: Hongtao Liu, Xuhong Yu, Kunwu Li, John Klejnot, Hongyun Yang, Dominique Lisiero, Chentao Lin... [REPORTS] A Stress Signaling Pathway in Adipose Tissue Regulates Hepatic Insulin Resistance - In mice, some detrimental effects of a diet high in fat-insulin resistance, for instance-result from hormonal signals sent from fat cells to the liver. Authors: Guadalupe Sabio, Madhumita Das, Alfonso Mora, Zhiyou Zhang, John Y. Jun, Hwi Jin Ko, Tamera Barrett, Jason K. Kim, Roger J. Davis... [REPORTS] Inhibition of Rac by the GAP Activity of Centralspindlin Is Essential for Cytokinesis - During cell division, a component of the spindle inhibits a small regulatory binding protein, allowing another regulator to constrict a ring between the separating daughter cells. Authors: Julie C. Canman, Lindsay Lewellyn, Kimberley Laband, Stephen J. Smerdon, Arshad Desai, Bruce Bowerman, Karen Oegema... [REPORTS] Dynamic Analyses of Drosophila Gastrulation Provide Insights into Collective Cell Migration - Live fluorescence imaging of over 1500 cells within a Drosophila embryo during gastrulation reveals that a fibroblast growth factor coordinates cell migration. Authors: Amy McMahon, Willy Supatto, Scott E. Fraser, Angelike Stathopoulos... [REPORTS] Astroglial Metabolic Networks Sustain Hippocampal Synaptic Transmission - The glial astrocytes that surround neurons supply glucose or lactate to excitatory synapses though gap junctions that open when the neurons are active. Authors: Nathalie Rouach, Annette Koulakoff, Veronica Abudara, Klaus Willecke, Christian Giaume... [REPORTS] Activation of Pannexin-1 Hemichannels Augments Aberrant Bursting in the Hippocampus - Activation of a glutamate receptor in hippocampal cells leads to secondary opening of a gap junction-like channel that can contribute to seizure-like bursting. Authors: Roger J. Thompson, Michael F. Jackson, Michelle E. Olah, Ravi L. Rungta, Dustin J. Hines, Michael A. Beazely, John F. MacDonald, Brian A. MacVicar... [REPORTS] Centromere-Associated Female Meiotic Drive Entails Male Fitness Costs in Monkeyflowers - Competition between chromosomal homologs causes non-Mendelian meiotic segregation and fitness polymorphism in a natural monkeyflower population. Authors: Lila Fishman, Arpiar Saunders... [REPORTS] Maternal Alloantigens Promote the Development of Tolerogenic Fetal Regulatory T Cells in Utero - Exposure of the human fetus to maternal cells during pregnancy can prompt development of regulatory T cells that prevent responses to non-inherited maternal antigens. Authors: Jeff E. Mold, Jakob Michaëlsson, Trevor D. Burt, Marcus O. Muench, Karen P. Beckerman, Michael P. Busch, Tzong-Hae Lee, Douglas F. Nixon, Joseph M. McCune... [SUPPLEMENT] BUSINESS OFFICE FEATURE: Life Science Technologies: Cell Signaling: ChIPping Away at Gene Expression - Author: Mike May... [PODCASTS] Science Podcast - Author: ... Copyright © 2008, Baby Sleep Solution. All Rights Reserved. |