Contents
Vol 305, Issue 5680
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Products & Materials
News of the Week
ScienceScope
Random Samples
News Focus
Letters
Books
Essays on Science and Society
Perspectives
Review
Brevia
- Path Integration in Desert Ants Controls Aggressiveness
Desert ants fight members of other colonies when they are close to their own nest or when their path-length detectors tell them they are.
Research Article
- Dissection of the Mammalian Midbody Proteome Reveals Conserved Cytokinesis Mechanisms
Proteomic analysis shows that many proteins known to participate in cell furrow formation and endocytosis, plus 100 new ones, are required for the separation of daughter cells.
Reports
- Three-Dimensional Polarimetric Imaging of Coronal Mass Ejections
A three-dimensional view of solar mass ejections is revealed by examination of emitted polarized light, providing information important for space weather preparations.
- Mass Spectrometric Imaging of Highly Curved Membranes During Tetrahymena Mating
The fusion of membranes during mating may be driven by local concentrations of a lipid that forms a high-curvature bilayer.
- Chiral Fiber Gratings
Optical fibers manufactured with a regular periodic twist can selectively transmit specific wavelengths of polarized light.
- Small Mid-Pleistocene Hominin Associated with East African Acheulean Technology
A cranium from a hominid in Kenya from 900,000 years ago, a period with more abundant Eurasian fossils, indicates a wide variation in hominid morphology at this time.
- Evidence for Precipitation on Mars from Dendritic Valleys in the Valles Marineris Area
Dendritic valley networks extending for hundreds of kilometers on Mars suggest that sustained periods of rain formed rivers during warm periods about 3 billion years ago.
- The Normal Function of a Speciation Gene, Odysseus, and Its Hybrid Sterility Effect
A gene responsible for speciation is found to promote male hybrid sterility by affecting sperm function.
- Adaptive Radiation from Resource Competition in Digital Organisms
A digital ecosystem evolves to become species-rich in a homogeneous environment with intermediate productivity.
- Self-Assembling Protein Microarrays
Better protein microarrays can be built by attaching DNA that codes for the desired protein to a glass slide and then synthesizing the protein during the assay.
- Lack of a Fusion Requirement for Development of Bone Marrow-Derived Epithelia
Cells from donor bone marrow can form differentiated epithelial cells in the lung, liver, and skin, without having fused with existing resident cells.
- Mitotic Golgi Partitioning Is Driven by the Membrane-Fissioning Protein CtBP3/BARS
For cell division to begin, a fission protein must first break up intracellular Golgi membranes in preparation for their partitioning into the daughter cells.
- Sites of Neocortical Reorganization Critical for Remote Spatial Memory
In mice, events first processed as signals in the hippocampus require integration by several interacting cortical areas for consolidation into long-term memory.
- Neural Activity Triggers Neuronal Oxidative Metabolism Followed by Astrocytic Glycolysis
Two-photon analysis of neural tissue shows that astrocytes feed glycolysis-generated lactate to neurons, which oxidize the lactate to supply energy for maintaining ionic balances.
- Inhibition of Netrin-Mediated Axon Attraction by a Receptor Protein Tyrosine Phosphatase
A membrane-bound receptor in neurons helps their growing axons interpret a cacophony of attractive and inhibitory signals.
