Contents
Vol 311, Issue 5765
Special Feature
Special Feature
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Products & Materials
News of the Week
ScienceScope
Random Samples
Newsmakers
News Focus
Letters
Books
Policy Forum
Perspectives
Review
Brevia
- Cellular Senescence in Aging Primates
As baboons age, cells that have become irreversibly senescent accumulate in various tissues, likely contributing to the aging of the whole animal.
Research Articles
- Architecture of Mammalian Fatty Acid Synthase at 4.5 Å Resolution
The large multiprotein complexes that synthesize fatty acids in mammals and fungi have radically different architectures.
- Architecture of a Fungal Fatty Acid Synthase at 5 Å Resolution
The large multiprotein complexes that synthesize fatty acids in mammals and fungi have radically different architectures.
Reports
- Grain Size-Sensitive Creep in Ice II
Experiments show that grain size influences the deformation speed of ice under high pressure, modifying models of the evolution and internal dynamics of icy moons.
- Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3
Application of an electric field to a thin lead zirconium titanium oxide produces a surprisingly large drop in its temperature, suggesting a potential refrigeration technology.
- Surface Self-Organization Caused by Dislocation Networks
The organization of silver ions on a ruthenium surface depends on dislocations below the surface and not on strain or surface tension as had been thought.
- Synthesis and Characterization of the Nitrides of Platinum and Iridium
A platinum nitride produced at high pressure has a simple structure, and an iridium nitride can persist at ambient conditions and may be nearly as stiff as diamond.
- The Rotational Spectrum of the Water-Hydroperoxy Radical (H2O-HO2) Complex
Microwave spectroscopy reveals that a H2O—HO2 complex is pentagonal, offering a signature with which to probe its postulated role in atmospheric chemistry.
- Early Maya Writing at San Bartolo, Guatemala
Hieroglyphic writing adorns a buried stone building in the Maya temple of San Bartolo, Guatemala, dated to about 250 B.C., closer to when writing emerged in the New World.
- Toward Automatic Reconstruction of a Highly Resolved Tree of Life
Sequences of 36 genes in each of 191 diverse species allow construction of a highly resolved phylogenetic tree, which, when lateral gene transfer is eliminated, clarifies the tree of life.
- Germline Mutations in Genes Within the MAPK Pathway Cause Cardio-facio-cutaneous Syndrome
Mutations that functionally alter an intensely studied cellular signaling pathway are found in young patients with a developmental delay disorder.
- Combined Analog and Action Potential Coding in Hippocampal Mossy Fibers
Synapses at one end of a neuron can be affected by graded synaptic currents at the other end, 0.5 millimeters away, suggesting that analog information is unexpectedly used in the brain.
- Chemical Rescue of a Mutant Enzyme in Living Cells
Abnormal cells harboring a mutant signaling enzyme found in some cancers can be rapidly rescued by the small molecule imidazole, suggesting a therapeutic application.
- Chimpanzees Recruit the Best Collaborators
Like humans, chimps will preferentially recruit especially skilled species-mates to solve difficult problems.
- Altruistic Helping in Human Infants and Young Chimpanzees
Toddlers can recognize that an adult needs help with a task and assist, indicating empathy and altruism; young chimpanzees do the same, but less effectively.
