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Science RSS FeedsThis Week in Science - Symporter Structure Solved | A Question of Trust | Modeling the Birth of Planetary Systems | Nanoscale Standards | Flattening the Spin Landscape | Breaking in Three | Mars Rocks | Genetics of the Sexes | Axonal Pathfinding in Sight | Autoimmune Fail-Safe Strategy | Noticing Is Remembering | Cooling with Ferroelectric Polymers | Brown: The New Black | Modulating Striatal Synapses...Feed Source: www.sciencemag.org Editors' Choice - CHEMISTRY: Tolerating Chlorine | APPLIED PHYSICS: Unfolding the Power of Solar | BIOCHEMISTRY: Ready, Set, Go | CELL BIOLOGY: Let's Move It | CHEMISTRY: Stringing Large Rings | EVOLUTION: Taking the Long View | Science Signaling: Just Looking or Settling In?... Science Scope - Obama Banks on NASA | Psychiatrist Dropped From Grant | Survey Finds More Apes... Random Samples - A SQUID FOR THE AGES | MOUSE MOTHER BLUES | HAIR OF THE YETI... Newsmakers - TWO CULTURES | IN THE MEDIA | MOVERS | ON CAMPUS... [EDITORIAL] Science in Muslim Countries - Author: Ismail Serageldin... [NEWS] BIOTERRORISM: Scientists Seek Answers, Ponder Future After Anthrax Case Suicide - Did he really do it? That's the main question on the minds of many scientists this week after an Army researcher apparently close to being indicted for the worst bioterror attack in U.S. history took his own life.Authors: Martin Enserink, Yudhijit Bhattacharjee... [NEWS] SCIENCE AND THE PUBLIC: Scientists Targeted in California Firebombings - Animal-rights extremists are suspected in attacks in Santa Cruz early Saturday morning that forced one researcher and his family from their home and destroyed another researcher's car.Author: Greg Miller... [NEWS] AIR QUALITY: Court Ruling Scrambles Clean Air Plans, Leaving a Vacuum - The U.S. Environmental Protection Agency, state regulators, and the electric power industry are struggling to come to grips with the impact of a surprise court decision last month that dismantled a major air-pollution regulation.Author: Erik Stokstad... [NEWS] STEM CELLS: Ethics Questions Add to Concerns About NIH Lines - Some federally funded scientists are having second thoughts about working with the 21 human embryonic stem cell lines available to them under President George W. Bush's policy, following a report indicating that the cells are getting increasingly stale--not only scientifically but ethically as well.Authors: Gretchen Vogel, Constance Holden... [NEWS] PLANETARY SCIENCE: Phoenix's Water May Be Gumming Up the Works - The Phoenix lander's most dramatic achievement so far (see sidebar for others) has been touching martian water ice--which may also be creating the mission's biggest challenge.Author: Richard A. Kerr... [NEWS] PLANETARY SCIENCE: Successes, Past and Future - The Phoenix lander has run into problems handling the martian soil it was sent to analyze (see main text). But it has had its accomplishments, including a successful landing, ice in easy reach, and instrumentation that works.Author: Richard A. Kerr... [NEWS] ECLIPSE: Researchers Flock to View Fleeting Display of Solar Corona - Dozens of scientists gathered in Jinta in western China to observe the total solar eclipse on 1 August and take advantage of the rare opportunity to observe the corona, a swirling halo of plasma that's a millionth as bright as the solar disk.Author: Richard Stone... [NEWS FOCUS] EVOLUTIONARY BIOLOGY: Deciphering the Genetics of Evolution - Powerful personalities in evolutionary biology have been tussling over how the genome changes to set the stage for evolution.Author: Elizabeth Pennisi... [NEWS FOCUS] MOLECULAR BIOLOGY: Industrial-Style Screening Meets Academic Biology - A $100-million-a-year-effort to find chemicals for exploring cellular processes and drug discovery is about to move into production; skeptics say it is struggling to meet its goals.Author: Jocelyn Kaiser... [NEWS FOCUS] MOLECULAR BIOLOGY: Universities Join the Screening Bandwagon - Unlike the screening centers funded by the U.S. National Institutes of Health (see main text), many of the high-throughput screening facilities at universities lack chemists to do the tweaking required to verify a "hit" and improve the strength and specificity of the interaction.Author: Jocelyn Kaiser... [NEWS FOCUS] CONSERVATION BIOLOGY: Can the Vaquita Be Saved? - Scientists are embarking on a last-ditch effort to help the world's most endangered marine mammal avoid the fate of its Chinese cousin, the baiji.Author: Virginia Morell... [LETTERS] The Drugs Not Taken - Author: John Urquhart... [LETTERS] The Potential of Genotyping - Author: Jose de Leon... [LETTERS] Correcting the Record on DNA Direct - Authors: Allan T. Bombard, Trisha Brown;, Sara Katsanis, Gail Javitt, Kathy Hudson... [LETTERS] Blue Revolution Brings Risks and Rewards - Author: David A. Lightfoot... [LETTERS] Bad Grades for Science Title - Author: John H. Marburger III... [BOOKS ET AL.] INFECTIOUS DISEASES: Plague Through History - The contributors to these volumes integrate findings from history, archeology, epidemiology, and molecular biology to provide multifaceted accounts of the plague and its effects on human history.Author: Nils Chr. Stenseth... [BOOKS ET AL.] NEUROPHYSIOLOGY: A Sharp Look at Stories of Smell - The author provides a wide-ranging and well-grounded account of the science and culture of smell.Author: Stuart Firestein... [POLICY FORUM] SOCIOLOGY: Scientific Misconduct: Do the Punishments Fit the Crime? - What happens to researchers after a finding of misconduct?Authors: Barbara K. Redman, Jon F. Merz... [PERSPECTIVES] IMMUNOLOGY: A Breath of Aire for the Periphery - A rare cell type in peripheral lymphoid tissues may act as a safety net in eliminating autoreactive immune cells.Author: Bruno Kyewski... [PERSPECTIVES] ASTRONOMY: Planetary System Formation - The diversity of extrasolar planets and planetary systems challenges present theories of planetary system formation.Author: J. C. B. Papaloizou... [PERSPECTIVES] PSYCHOLOGY: Trust Me on This - Borderline personality disorder is associated with abnormal activity in a brain region associated with monitoring trust in relationships.Author: Andreas Meyer-Lindenberg... [PERSPECTIVES] ECOLOGY: The Coming Arctic Invasion - In a future warmer climate, mollusks and other species are likely to migrate from the Pacific to the Atlantic via the Bering Strait.Authors: Geerat J. Vermeij, Peter D. Roopnarine... [PERSPECTIVES] STRUCTURAL BIOLOGY: Symmetric Transporters for Asymmetric Transport - The crystal structure of a membrane transporter protein sheds light on the molecular mechanism by which glucose is absorbed by the intestine and the kidneys.Authors: Nathan K. Karpowich, Da-Neng Wang... [SPECIAL SECTION] Theoretical Possibilities - Authors: Julia Fahrenkamp-Uppenbrink, Phil Szuromi, Jake Yeston, Robert Coontz... [SPECIAL/NEWS] Problem Solved* (*sort of) - Researchers have toiled for decades to understand how floppy chains of amino acids fold into functional proteins. Learning many of those rules has brought them to the verge of being able to make predictions about proteins they haven't even discovered.Author: Robert F. Service... [SPECIAL/Perspective] Intermolecular Potentials - Author: Anthony J. Stone... [SPECIAL/Perspective] Quantum Dynamics of Chemical Reactions - Author: David C. Clary... [SPECIAL/Perspective] Insights into Current Limitations of Density Functional Theory - Authors: Aron J. Cohen, Paula Mori-Sánchez, Weitao Yang... [Perspective] Frontiers in Surface Scattering Simulations - Author: Geert-Jan Kroes... [SPECIAL/Perspective] Large-Scale Molecular Dynamics Simulations of Self-Assembling Systems - Authors: Michael L. Klein, Wataru Shinoda... [SPECIAL/Special Issue Perspective] Challenges in Modeling Materials Properties Without Experimental Input - Author: Emily A. Carter... [BREVIA] Latent Fingerprint Chemical Imaging by Mass Spectrometry - Imaging of fingerprints in the field with a portable mass spectrometer can reveal the presence of drugs, explosives, or other materials and help resolve overlapping prints.Authors: Demian R. Ifa, Nicholas E. Manicke, Allison L. Dill, R. Graham Cooks... [RESEARCH ARTICLES] The Rupture and Repair of Cooperation in Borderline Personality Disorder - In a game, patients with personality disorder cannot build trust with normal partners, possibly because they cannot distinguish between trusting and distrusting acts in others.Authors: Brooks King-Casas, Carla Sharp, Laura Lomax-Bream, Terry Lohrenz, Peter Fonagy, P. Read Montague... [RESEARCH ARTICLES] The Crystal Structure of a Sodium Galactose Transporter Reveals Mechanistic Insights into Na+/Sugar Symport - The structure of a sugar transporter suggests how these proteins may rearrange to permit the sugar to enter and leave the binding site on opposite sides of the membrane.Authors: Salem Faham, Akira Watanabe, Gabriel Mercado Besserer, Duilio Cascio, Alexandre Specht, Bruce A. Hirayama, Ernest M. Wright, Jeff Abramson... [REPORTS] Gas Disks to Gas Giants: Simulating the Birth of Planetary Systems - A model of the evolution of planets from a gas-rich disk shows that the disk's density and viscosity affect the final distribution of planets and that our solar system is unusual.Authors: Edward W. Thommes, Soko Matsumura, Frederic A. Rasio... [REPORTS] Suppressing Spin Qubit Dephasing by Nuclear State Preparation - A series of voltage pulses can mitigate the detrimental influence of background spins in gallium arsenide, allowing the spin of quantum dots to remain coherent for microseconds.Authors: D. J. Reilly, J. M. Taylor, J. R. Petta, C. M. Marcus, M. P. Hanson, A. C. Gossard... [REPORTS] Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature - A polymer undergoes a large change in ordering on application of an electric field at near-room temperatures, causing a temperature drop potentially useful for refrigeration.Authors: Bret Neese, Baojin Chu, Sheng-Guo Lu, Yong Wang, E. Furman, Q. M. Zhang... [REPORTS] Programming DNA Tube Circumferences - Synthetic molecular tubes with monodisperse, programmable circumferences are self-assembled using a single-stranded DNA motif.Authors: Peng Yin, Rizal F. Hariadi, Sudheer Sahu, Harry M. T. Choi, Sung Ha Park, Thomas H. LaBean, John H. Reif... [REPORTS] The Role of Excited-State Topology in Three-Body Dissociation of sym-Triazine - Molecular imaging, along with theoretical analysis, shows that two distinct mechanisms interact to simultaneously break apart a molecule into three equivalent fragments.Authors: John D. Savee, Vadim A. Mozhayskiy, Jennifer E. Mann, Anna I. Krylov, Robert E. Continetti... [REPORTS] Phyllosilicate Diversity and Past Aqueous Activity Revealed at Mawrth Vallis, Mars - One of the oldest water channel deposits on Mars shows a layered sequence of different clay minerals produced by a history of aqueous alteration.Authors: Janice L. Bishop, Eldar Z. Noe Dobrea, Nancy K. McKeown, Mario Parente, Bethany L. Ehlmann, Joseph R. Michalski, Ralph E. Milliken, Francois Poulet, Gregg A. Swayze, John F. Mustard, Scott L. Murchie, Jean-Pierre Bibring... [REPORTS] Brown Carbon Spheres in East Asian Outflow and Their Optical Properties - Pollution blown from East Asia over the Pacific contains abundant brown spherules, not simply black or organic carbon particles, complicating modeling of its climatic effects.Authors: Duncan T. L. Alexander, Peter A. Crozier, James R. Anderson... [REPORTS] A Conserved Mutation in an Ethylene Biosynthesis Enzyme Leads to Andromonoecy in Melons - Melon plants have both hermaphroditic and male flowers, a mating system that results from a mutation involved in ethylene synthesis that is still under positive selection.Authors: Adnane Boualem, Mohamed Fergany, Ronan Fernandez, Christelle Troadec, Antoine Martin, Halima Morin, Marie-Agnes Sari, Fabrice Collin, Jonathan M. Flowers, Michel Pitrat, Michael D. Purugganan, Catherine Dogimont, Abdelhafid Bendahmane... [REPORTS] Human CHN1 Mutations Hyperactivate ?2-Chimaerin and Cause Duane?s Retraction Syndrome - A signaling protein that helps nerve fibers find their correct target muscles is required for innervation of the eye muscles and, if defective, causes an eye movement disorder.Authors: Noriko Miyake, John Chilton, Maria Psatha, Long Cheng, Caroline Andrews, Wai-Man Chan, Krystal Law, Moira Crosier, Susan Lindsay, Michelle Cheung, James Allen, Nick J. Gutowski, Sian Ellard, Elizabeth Young, Alessandro Iannaccone, Binoy Appukuttan, J. Timothy Stout... [REPORTS] Deletional Tolerance Mediated by Extrathymic Aire-Expressing Cells - Cells in the spleen and lymph nodes express self-antigens to detect and remove circulating self-reactive immune cells that have escaped deletion by the thymus.Authors: James M. Gardner, Jason J. DeVoss, Rachel S. Friedman, David J. Wong, Ying X. Tan, Xuyu Zhou, Kellsey P. Johannes, Maureen A. Su, Howard Y. Chang, Matthew F. Krummel, Mark S. Anderson... [REPORTS] Dichotomous Dopaminergic Control of Striatal Synaptic Plasticity - Contrary to previous assumptions, dopamine helps both strengthen and weaken synapses made by cortical cells onto cells of the subcortical striatum.Authors: Weixing Shen, Marc Flajolet, Paul Greengard, D. James Surmeier... [REPORTS] Dynamic Shifts of Limited Working Memory Resources in Human Vision - Working memory is a flexibly allocated, but finite, resource; more attention given to an object means it is remembered more precisely, whereas other objects are remembered less well.Authors: Paul M. Bays, Masud Husain... [PODCASTS] Science Podcast - Author: ... [SPECIAL FEATURE] SCIENCE CAREERS: In the Geosciences, Business Is Booming - Flat federal funding means tight times in academia, but jobs abound in the petroleum, mining, and environmental consulting industries.Author: Carolyn Gramling... [SPECIAL FEATURE] SCIENCE CAREERS: Geoscientists in High Demand in the Oil Industry - The next generation of petroleum geologists will face unique challenges in meeting the world's energy demands.Author: Lucas Laursen... [SPECIAL FEATURE] SCIENCE CAREERS: Hydrogeologists Tap Into Demand for an Irreplaceable Resource - Cross-disciplinary collaborations and a steady stream of new environmental problems give groundwater experts plenty of work to do.Author: Robert Coontz... |