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Clear Case
story links: Clear Case Genetic Variation: We're More Different Than We Thought
New research shows that at least 10 percent of genes in the human population can vary in the number of copies of DNA sequences they contain -- a finding that alters current thinking that the DNA of any two humans is 99.9 percent similar in content and identity. This discovery of genetic variation is expected to change the way scientists think about genetic diseases and evolution. Put Your Pictures on the Map
Sony's new GPS device applies geographical data to your images. In Gear Factor. Researchers Developing Diagnostic 'Lab On A Chip'
If you have ever marveled over the orderly process by which cars, buses and other modes of transportation are directed toward their destinations in a big city, you'll really appreciate the work of one Florida State University chemist. He is designing a "smart"traffic system similar to those in major metropolises. A major difference, though, is its size: this researcher's grid is small enough to fit on a tiny microchip. Study Finds Prostate Cancer In 25% Of High-risk Men With 'Normal' PSA
Men at high risk of developing prostate cancer should undergo aggressive screening for the disease. That is the recommendation following a Fox Chase Cancer Center study of 520 men at high-risk of developing prostate cancer in which 25 percent were diagnosed with the disease despite having a low PSA. Jefferson Neurosurgeons, Radiation Oncologists Wrap Radiation Around S
Using the most advanced radiation technology available in the region, neurosurgeons and radiation oncologists at the Jefferson Hospital for Neuroscience in Philadelphia have for the first time wrapped beams of radiation around a patient's spine, relieving pain from cancerous tumors while avoiding the spinal cord. The technology -- shaped beam surgery -- relies on sophisticated computers to tailor the shape and intensity of radiation to fit the size and shape of the tumor while sparing healthy tissue. 'Death Stench' Is A Universal Ancient Warning Signal, Biologists Disco
The smell of death proves to be an ancient warning signal to safeguard against predators and disease contagion. Researchers found that corpses of animals, from insects to crustaceans, all emit the same death stench produced by a blend of specific fatty acids. Genes May Explain Why Children Who Live Without Dads Have Earlier Sex
Using data from the National Longitudinal Survey of Youth, researchers used a novel and complex study design to better understand the association between fathers' absence and children's sexuality. Contrary to previous research, this study shows that the association can be best explained by genetic influences. The researchers also suggest that, while there's no "father absence gene," there are genetic contributions to traits in both moms and dads that increase the likelihood of earlier sexual behavior in children. Don't Overlook Urban Soil
Just as urban communities feature a mosaic of cultures, an analysis of Baltimore soil revealed a mosaic of soil conditions. Urban soil has been presumed to be highly disturbed, but this study showed that typical urban soil isn't so typical -- and isn't so disturbed -- after all. Wood Ant Queen Has No Egg-laying Monopoly
Insect queens were thought to have an egg-laying monopoly, but nine wood ant species revealed widespread reproductive activity by worker ants. Genetic analysis showed that as many as one in four eggs were laid by workers. Workers in many insect species can lay unfertilized male eggs, but usually workers in large colonies enforce the exclusive reproduction of the queen.
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