Vulnerability of Power Grid Centers on Key Junctions
Reka Albert Named a Fellow of the American Physical Society
Strong New Evidence of a Supersolid Phase of Matter
Strong New Evidence of a Supersolid Phase of Matter
Physics Gravity Model Applicable to Disease Spread
Ottar Bjornstad
Research Reveals Role of Gene in Infertility
A sample of the electron-microscope images obtained during research in the laboratory of Hong Ma at Penn State, showing the nucleus, synaptonemal complex, and other structures within the cell.
Sloan Digital Sky Survey Supports Dark Energy as the Primary Constituent of the Universe
This figure shows the SDSS spectrum of a quasar at a distance of 12 billion light years.
Chandra Looks Over a Cosmic Four-Leaf Clover
The Cloverleaf quasar is a single object whose image has been reproduced four times in a cloverleaf-like arrangement through a process known as gravitational lensing.
Making Black Holes Go 'Round on the Computer
Credit: Bruegmann, Tichy, Jansen 2004 Black hole binary after about one orbit. The black surfaces represent the black holes; whatever falls behind this black hole "horizon" can never escape again. The colored plane shows a measure for the distortion of spacetime. The numerical method has succeeded in keeping the data smooth and undistorted.
Genetic Barrier to Self-Pollination Identified
The S-locus controls the specificity of the self-incompatibility interactions between pollen and pistil. Matching of the S-allele carried by the pollen with one of the two S-alleles carried by the pistil results in the growth arrest of the pollen tube in the style. Only pollen tubes that carry a different S-allele from the S-allele of the pistil will be able to grow down the style to the ovary to achieve fertilization.
Small, Cold, and Hungry: Ultra-Small Microbes from a 120,000-Year-Old Greenland-Glacier Ice Sample
Material from a 120,000-year-old Greenland Glacier ice sample showing micro-microbes (small white oblong forms) and larger materials.
First Step Made Toward Comprehensive Use of Human Genome for Fighting Human Diseases
Wojciech Makalowski
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