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Science RSS FeedsThis Week in Science - Transporter in Action | Clocking Clock Components | Getting Angrite | Sediments in Motion | Lithographic Liquids | NOX | Emergence of Modern Human Behavior | Tuna Mix | Mussels and Self-Organization | Of Glia and Senses | HARPing On | TRPM7 and T Cell Development | Aneuploidy and Proliferation | Impure | Bounce Bounce | Universal Truths? | A Question of Balance...Feed Source: www.sciencemag.org Editors' Choice - CHEMISTRY: Catch, Kill, and Release | PHYSICS: Purifying X-ray Pulses | ECOLOGY: Early Life Experiences | ECOLOGY: A Diversity of Consumers | BIOPHYSICS: Swimming in Sand | DEVELOPMENT: Giving a Twist to Twist | CELL BIOLOGY: Talking About Stress... Science Scope - Panel OKs Anthrax Shots for First Responders | HAL the Cosmologist | China Stakes Genetic Claims | Star Wars in Florida | How to Age Gracefully... Random Samples - BIG CHILL-OUT | A BANK FOR CHINA'S WILD PLANTS | WHIPPING UP A DIAGNOSIS | RETURN OF THE POPULATION BOMB... Newsmakers - TWO CULTURES | MOVERS | MOVERS | THREE Q'S... [EDITORIAL] Science and China's Modernization - Author: Wen Jiabao... [NEWS] U.S. ELECTION: Scientists Plant Grass-Roots Effort for Obama in Final Days of Contest - Since September, more than three dozen scientists have placed articles or letters supporting presidential candidate Senator Barack Obama in 50-plus newspapers in 20 states. Political analysts say Obama has captured the lion's share of visible support among scientists.Author: Eli Kintisch... [NEWS] SELF-EXPERIMENTATION: Eat, Drink, and Be Wary: A Sugar's Sour Side - A new study being reported online this week strongly ties a sialic acid called Neu5Gc, made by chimpanzees and many other mammals but not humans, to a human disease and ingestion of red meat.Author: Jon Cohen... [NEWS] EVOLUTION: Two Sets of Cave Bear DNA Uncover the Bear Facts - A paper published online this week helps untangle bear phylogeny by presenting the mitochondrial genome of the extinct cave bear, Ursus spelaeus. Another paper, published last July, also reported the complete mitochondrial DNA of the cave bear as well as that of the extinct American short-faced bear, Arctodus simus.Author: Michael Balter... [NEWS] BIOETHICS: U.K. Approves New Embryo Law - With the enthusiastic support of the scientific community, the British House of Commons has overwhelmingly approved a wide-ranging bill that expands the country's rules governing work with human embryos.Author: Gretchen Vogel... [NEWS FOCUS] SCIENCE IN CHINA: You Say You Want a Revolution - Thirty years ago, Deng Xiaoping opened China to the world and brought scientists in from the cold. As researchers celebrate, some warn that the community still has major problems that need to be solved.Author: Hao Xin... [NEWS FOCUS] BIOMEDICAL RESEARCH: More Than Skin Deep - Scientists still don't know what causes scleroderma, a complex disease often marked by toughening skin and widespread internal fibrosis, but they're developing potential treatments nonetheless.Author: Lauren Cahoon... [NEWS FOCUS] BIOMEDICAL RESEARCH: Paul Klee, a Tragic Metamorphosis - Art experts believe scleroderma had a major impact on modern artist Paul Klee, as his later works shifted from vibrant to darker colors and emphasized themes such as mortality and suffering.Author: Lauren Cahoon... [NEWS FOCUS] SOCIETY OF VERTEBRATE PALEONTOLOGY 68TH ANNUAL MEETING: Skulls Show Dinos Blew Their Horns - At the Society of Vertebrate Paleontology meeting, a group presented the most sophisticated evidence yet that the nasal passages within the crests of lambeosaurs were used for vocalizing, not smelling.Author: Erik Stokstad... [NEWS FOCUS] SOCIETY OF VERTEBRATE PALEONTOLOGY 68TH ANNUAL MEETING: Two Legs Good - At the Society of Vertebrate Paleontology meeting, researchers presented a single bone, the thighbone of an ancient australopithecine from Galili, Ethiopia, that may add an interesting piece to the puzzle of how our famed ancestor "Lucy's" two-legged gait evolved.Author: Elizabeth Culotta... [NEWS FOCUS] SOCIETY OF VERTEBRATE PALEONTOLOGY 68TH ANNUAL MEETING: Snapshots From the Meeting - Snapshots from the Society of Vertebrate Paleontology meeting include the earliest tree-climber, a dinosaur-cruncher, and evidence that dinosaurs were struck down in their prime and that dinosaurs of at least one species were picky eaters as children.Author: Erik Stokstad... [LETTERS] Informed Consent in Social Science - Authors: Pierre Couture;, John A. List... [LETTERS] Viewing NASA's Mars Budget with Resignation - Author: Alan Stern... [LETTERS] Food Insecurity's Dirty Secret - Author: Rattan Lal... [TECHNICAL COMMENT] Comment on ?Differential Rescue of Light- and Food-Entrainable Circadian Rhythms? - Authors: Ralph E. Mistlberger, Shin Yamazaki, Julie S. Pendergast, Glenn J. Landry, Toru Takumi, Wataru Nakamura... [TECHNICAL RESPONSE] Response to Comment on ?Differential Rescue of Light- and Food-Entrainable Circadian Rhythms? - Authors: Patrick M. Fuller, Jun Lu, Clifford B. Saper... [BOOKS ET AL.] POLITICAL SCIENCE: Why Rich States Aren't Republican - Beginning with the paradox that while rich states have tilted toward the Democratic Party, rich voters still tend to favor the Republicans, the authors explore voting patterns in recent U.S. elections and their implications for American politics.Authors: Terry Nichols Clark, Christopher Graziul... [BOOKS ET AL.] POLITICAL SCIENCE: Can We Trust the Machines? - Rejecting claims that new voting technologies foster tampering and fraud, Alvarez and Hall argue that with careful implementation computer-based solutions provide the best approach to voting.Author: Walter R. Mebane Jr.... [BOOKS ET AL.] POLITICAL SCIENCE: On Counterproductive Changes - In this consideration of detrimental effects of election reform, Schaffer discusses both what has gone wrong in the past and what can be done to head off potential problems in future changes.Author: Michael Johnston... [BOOKS ET AL.] POLITICAL SCIENCE: The Power of Cross Pressures - Hillygus and Shields explore survey data, experimental results, campaign ads, archives, and interview responses to discuss why wedge issues are used, who they persuade, and how they may affect political equality and democratic governance.Author: David A. M. Peterson... [BOOKS ET AL.] POLITICAL SCIENCE: A Better Way to Choose? - Brams uses social choice and game theory to argue for procedures that allow voters to better express their preferences and disputants to divide goods more fairly.Author: Iain McLean... [BOOKS ET AL.] POLITICAL SCIENCE: Elective Inequality - Bartels explores the political causes and consequences of the growing economic inequality in the United States.Author: Robert Grafstein... [EDUCATION FORUM] PHYSICS: PhET: Simulations That Enhance Learning - A library of interactive computer simulations aids physics instruction worldwide.Authors: Carl E. Wieman, Wendy K. Adams, Katherine K. Perkins... [EDUCATION FORUM] UNDERGRADUATE RESEARCH: Genomics Education Partnership - The Genomics Education Partnership offers an inclusive model for undergraduate research experiences, with students pooling their work to contribute to international databases.Authors: D. Lopatto, C. Alvarez, D. Barnard, C. Chandrasekaran, H.-M. Chung, C. Du, T. Eckdahl, A. L. Goodman, C. Hauser, C. J. Jones, O. R. Kopp, G. A. Kuleck, G. McNeil, R. Morris, J. L. Myka, A. Nagengast, P. J. Overvoorde, J. L. Poet, K. Reed, G. Regisford, D. Revie, A. ... [PERSPECTIVES] GEOPHYSICS: Assessing Ground Shaking - Monitoring and modeling the complex interaction of seismic waves with soils is critical for mitigating earthquake risks.Author: Daniel R. H. O'Connell... [PERSPECTIVES] CLIMATE CHANGE: Whither Hurricane Activity? - Alternative interpretations of the relationship between sea surface temperature and hurricane activity imply vastly different future Atlantic hurricane activity.Authors: Gabriel A. Vecchi, Kyle L. Swanson, Brian J. Soden... [PERSPECTIVES] MATERIALS SCIENCE: Nanoscale Polymer Processing - The established rules for fabricating plastics now require a rethink as feature sizes of the products head toward the nanoscale.Authors: Christopher L. Soles, Yifu Ding... [PERSPECTIVES] ECOLOGY: Physiology and Climate Change - Studies of physiological mechanisms are needed to predict climate effects on ecosystems at species and community levels.Authors: Hans O. Pörtner, Anthony P. Farrell... [PERSPECTIVES] CANCER: Aneuploidy Advantages? - The gain or loss of specific chromosomes can determine whether a cell becomes tumorigenic.Author: Eva Hernando... [PERSPECTIVES] NEUROSCIENCE: A New Glance at Glia - Glial cells assist sensory neurons to perceive and respond to stimuli by improving the signal-to-noise ratio.Authors: Andreas Reichenbach, Thomas Pannicke... [AAAS AFFAIRS] AAAS News and Notes - A monthly roundup of recent news and projects of Science's publisher, the American Association for the Advancement of Science.Author: ... [REVIEWS] Structural Insights into a Circadian Oscillator - Authors: Carl Hirschie Johnson, Martin Egli, Phoebe L. Stewart... [BREVIA] Wolbachia and Virus Protection in Insects - An endosymbiotic bacterium survives and spreads in populations of Drosophila because it protects its insect hosts from death caused by certain RNA viruses. Authors: Lauren M. Hedges, Jeremy C. Brownlie, Scott L. O?Neill, Karyn N. Johnson... [RESEARCH ARTICLES] Aneuploidy Affects Proliferation and Spontaneous Immortalization in Mammalian Cells - Mouse cell lines carrying extra copies of one of four chromosomes all show less cell proliferation and higher gene expression, but vary in how fast they become cancer-like cells. Authors: Bret R. Williams, Vineet R. Prabhu, Karen E. Hunter, Christina M. Glazier, Charles A. Whittaker, David E. Housman, Angelika Amon... [RESEARCH ARTICLES] Structure and Molecular Mechanism of a Nucleobase?Cation?Symport-1 Family Transporter - The structure of a membrane transporter in an open state suggests that in- and out-facing cavities reciprocally open and close coordinated by two transmembrane segments. Authors: Simone Weyand, Tatsuro Shimamura, Shunsuke Yajima, Shun?ichi Suzuki, Osman Mirza, Kuakarun Krusong, Elisabeth P. Carpenter, Nicholas G. Rutherford, Jonathan M. Hadden, John O?Reilly, Pikyee Ma, Massoud Saidijam, Simon G. Patching, Ryan J. Hope, Halina T. Norbertczak, ... [REPORTS] Magnetism on the Angrite Parent Body and the Early Differentiation of Planetesimals - A type of primitive meteorite from the earliest small bodies in the solar system preserves remnant magnetism, implying that these planetesimals had a convecting metallic core. Authors: Benjamin P. Weiss, James S. Berdahl, Linda Elkins-Tanton, Sabine Stanley, Eduardo A. Lima, Laurent Carporzen... [REPORTS] The Role of Impulse on the Initiation of Particle Movement Under Turbulent Flow Conditions - Entrainment of sediment grains from, say, a stream bed, by turbulent flow depends not just on the magnitude of the applied fluid forces but also on their duration. Authors: Panayiotis Diplas, Clint L. Dancey, Ahmet O. Celik, Manousos Valyrakis, Krista Greer, Tanju Akar... [REPORTS] Molecular Confinement Accelerates Deformation of Entangled Polymers During Squeeze Flow - When polymers are squeezed at nanometer scales, the longest chains unexpectedly flow more easily, even though in theory they should be the most entangled. Authors: Harry D. Rowland, William P. King, John B. Pethica, Graham L. W. Cross... [REPORTS] Peptides Enhance Magnesium Signature in Calcite: Insights into Origins of Vital Effects - A simple hydrophilic peptide helps to regulate the magnesium content of calcite in marine organisms, explaining a complication in using this as an ocean thermometer. Authors: A. E. Stephenson, J. J. DeYoreo, L. Wu, K. J. Wu, J. Hoyer, P. M. Dove... [REPORTS] Trampoline Effect in Extreme Ground Motion - Upward ground acceleration in a recent earthquake in Japan reached about four times that of gravity, as if the upper soil layer were bouncing on a trampoline in the ground below. Authors: Shin Aoi, Takashi Kunugi, Hiroyuki Fujiwara... [REPORTS] Tracing the Origin and Fate of NOx in the Arctic Atmosphere Using Stable Isotopes in Nitrate - Measurements of N and O isotopes show that nitrate in the high Arctic is produced when spring sunlight oxidizes pollutants brought from lower latitudes since the past summer. Authors: Samuel Morin, Joël Savarino, Markus M. Frey, Nicolas Yan, Slimane Bekki, Jan W. Bottenheim, Jean M. F. Martins... [REPORTS] Ages for the Middle Stone Age of Southern Africa: Implications for Human Behavior and Dispersal - Dating of the first use of symbols and jewelry in South Africa shows that the emergence of modern human behavior was not influenced by just environmental factors. Authors: Zenobia Jacobs, Richard G. Roberts, Rex F. Galbraith, Hilary J. Deacon, Rainer Grün, Alex Mackay, Peter Mitchell, Ralf Vogelsang, Lyn Wadley... [REPORTS] Energy Uptake and Allocation During Ontogeny - A model of how developing animals assimilate food and allocate and store energy for maintenance, growth, and activity accurately predicts data from mammals and birds. Authors: Chen Hou, Wenyun Zuo, Melanie E. Moses, William H. Woodruff, James H. Brown, Geoffrey B. West... [REPORTS] Experimental Evidence for Spatial Self-Organization and Its Emergent Effects in Mussel Bed Ecosystems - Interactions among individual mussels result in large-scale spatial patterns in mussel beds that are beneficial to the population?by promoting secondary production, for example. Authors: Johan van de Koppel, Joanna C. Gascoigne, Guy Theraulaz, Max Rietkerk, Wolf M. Mooij, Peter M. J. Herman... [REPORTS] Natal Homing and Connectivity in Atlantic Bluefin Tuna Populations - Isotopes in the ear bones of tuna reveal that two populations?from the Gulf of Mexico and the Mediterranean?mingle in the Atlantic as adolescents but return home to breed. Authors: Jay R. Rooker, David H. Secor, Gregorio De Metrio, Ryan Schloesser, Barbara A. Block, John D. Neilson... [REPORTS] Glia Are Essential for Sensory Organ Function in C. elegans - Nonneural glial cells are required for the normal operation of the main sensory organ of a nematode, influencing neuronal shape and function, as well as behavior. Authors: Taulant Bacaj, Maya Tevlin, Yun Lu, Shai Shaham... [REPORTS] HARP Is an ATP-Driven Annealing Helicase - The gene deleted in a complex genetic disease is a reverse helicase, a motor-like enzyme that uses adenosine triphosphate to zip up separated strands of DNA. Authors: Timur Yusufzai, James T. Kadonaga... [REPORTS] Polycomb Proteins Targeted by a Short Repeat RNA to the Mouse X Chromosome - A small RNA cleaved from a larger precursor recruits silencing proteins to the X chromosome to inactivate it in female mammals, which have an extra copy. Authors: Jing Zhao, Bryan K. Sun, Jennifer A. Erwin, Ji-Joon Song, Jeannie T. Lee... [REPORTS] Deletion of Trpm7 Disrupts Embryonic Development and Thymopoiesis Without Altering Mg2+ Homeostasis - A cation channel that conducts both Ca2+ and Mg2+ is unexpectedly required for normal mouse development, specifically for proper maturation of the thymus and T cells. Authors: Jie Jin, Bimal N. Desai, Betsy Navarro, Adriana Donovan, Nancy C. Andrews, David E. Clapham... [PODCASTS] Science Podcast - Author: ... [SUPPLEMENT] BUSINESS OFFICE FEATURE: FOCUS ON IRELAND: Celtic Strength: Science in Ireland - Author: Laura Bonetta... Copyright © 2008, Digital Profit Tips & Solutions. All Rights Reserved. |