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Table of Contents 9 September 2005 Volume 309 The Power of Walking Number 5741 Toward Cheaper Genomes As the Human Brain Evolves Nanosprings Take Form RESEARCH This Week in Science Poor Man's Sequencing? * Toward Magnetic Spintronics * Perovskite Preservation * Frustrating Magnetism * Turning Its Stripes * More Makes More * Puzzling Brain Genes * The Message Is the Messenger * Patchwork Plant Life * Power Walking * Freeing p53 * Plague Targets Its Victims * Chemistry and Quantum Computation * Preindustrial Methane Emissions * Making and Breaking the Gradient 1645 Editors' Choice: Highlights of the recent literature CHEMISTRY: Move Away or Stay Put * MOLECULAR BIOLOGY: Me Instead of U * BIOMEDICINE: Mergers and Acquisitions * CLIMATE SCIENCE: Poring over the Past * BIOCHEMISTRY: Some Like It Hot * CHEMISTRY: Oxides as Reductants * STKE: Neuropeptide-Mediated Receptor Trafficking 1651 Review Magnetic Domain-Wall Logic D. A. Allwood, G. Xiong, C. C. Faulkner, D. Atkinson, D. Petit, and R. P. Cowburn 1688-1692. Brevia A Human-Specific Gene in Microglia Toshiyuki Hayakawa, Takashi Angata, Amanda L. Lewis, Tarjei S. Mikkelsen, Nissi M. Varki, and Ajit Varki 1693. Research Article The mRNA of the Arabidopsis Gene FT Moves from Leaf to Shoot Apex and Induces Flowering Tao Huang, Henrik Böhlenius, Sven Eriksson, François Parcy, and Ove Nilsson 1694-1696. Reports Spin Disorder on a Triangular Lattice Satoru Nakatsuji, Yusuke Nambu, Hiroshi Tonomura, Osamu Sakai, Seth Jonas, Collin Broholm, Hirokazu Tsunetsugu, Yiming Qiu, and Yoshiteru Maeno 1697-1700. Conversion of Zinc Oxide Nanobelts into Superlattice-Structured Nanohelices Pu Xian Gao, Yong Ding, Wenjie Mai, William L. Hughes, Changshi Lao, and Zhong Lin Wang 1700-1704. Simulated Quantum Computation of Molecular Energies Alán Aspuru-Guzik, Anthony D. Dutoi, Peter J. Love, and Martin Head-Gordon 1704-1707. Fe-