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Science News Archive September 2007 - Page 11


Page 11 of 18

Good fences make good neighbors

Researchers develop mathematical model to predict ethnic conflict based on global pattern formation, finding poorly defined boundaries and heterogeneous areas prone to violence. The study suggests that clear borders can prevent ethnic tension, echoing Robert Frost's poem 'good fences make good neighbors',

SourceBrandeis University·JournalScience·DateSep 13, 2007

The dating game

The discovery of geologic time revolutionized our understanding of the world, allowing scientists to date rocks and calculate the age of the Earth. This breakthrough, achieved by Arthur Holmes in the early 20th century, had a profound impact on fields like plate tectonics and evolution.

How dirty is your money?

Researchers from the University of Bristol and Mass Spec Analytical Ltd found that geographical location has no influence on the distribution of drug contamination on bank notes. The study analyzed £10 and £20 notes from areas across the UK, including urban and rural regions, and found that contamination levels were unrelated to location.

SourceUniversity of Bristol·JournalForensic Science International·DateSep 13, 2007

Ancient whale fall from California's Año Nuevo Island one of youngest, most complete known

A fossilized whale skeleton found on California's Año Nuevo Island is the youngest and most complete known example of a whale fall in North America. The 11- to 15-million-year-old skeleton was home to multiple mollusks, challenging previous theories that large whales were necessary for these deep-sea communities to thrive.

SourceUniversity of California - Berkeley·JournalBiology Letters·DateSep 13, 2007

Climate -- no smoking gun for Neanderthals

A new study by an international team of researchers provides a breakthrough approach to understanding the role of climate in the Neanderthal extinction. The findings suggest that there was no single climatic event that caused the extinction, but rather indirect effects on competition with other human groups.

SourceMax-Planck-Gesellschaft·JournalNature·DateSep 13, 2007

Progress in understanding the malarial parasite

Researchers constructed a chaperone interaction network for the malarial parasite, highlighting new proteins that can potentially be used in the fight against malaria. The study provides insights into the functions of molecular chaperones and their role in chromatin remodeling, protein trafficking, and cytoadherence.

SourcePLOS·JournalPLOS Computational Biology·DateSep 13, 2007

Less than 3 percent of UK 11-year-olds take enough exercise

Research reveals that UK 11-year-olds are not physically active enough, with less than 3% meeting recommended daily exercise levels. The study, which monitored over 5,500 children in the South West of England, found that boys were more active than girls and that sustained activity was crucial for promoting cardiorespiratory fitness.

SourceBMJ Specialty Journals·JournalArchives of Disease in Childhood·DateSep 13, 2007

Nuclear physicists examine oxygen's limits

Researchers at Michigan State University have made a unique measurement of an exotic oxygen nucleus, confirming a theoretical model predicting dramatic changes in structure as oxygen nuclei approach their limits. The experiment used new detection tools, making it possible to explore isotopes near the extreme edges of existence.

SourceMichigan State University·JournalPhysical Review Letters·DateSep 13, 2007

Scientists eye secrets of retinal regeneration

Researchers at Weill Cornell Medical College have discovered a crucial mechanism driving the growth of light-sensing discs in rod cells, shedding new light on retinal health and disease. The study's findings could lead to significant advances in understanding and treating eye diseases such as retinitis pigmentosa.

SourceNewYork-Presbyterian·JournalCell·DateSep 12, 2007

Genes and drugs team up to lower blood pressure

Researchers identified single nucleotide polymorphisms (SNPs) in the adducin 2 gene that influence blood pressure regulation among people with hypertension. The study found associations between SNPs and differential responses to different antihypertensive drugs, highlighting potential for tailored treatment regimens.

SourceBMC (BioMed Central)·JournalBMC Medical Genetics·DateSep 12, 2007

Loneliness is a molecule

Researchers at UCLA identified a distinct pattern of gene expression in immune cells from chronically lonely individuals. This finding suggests that social isolation affects the activity of genes driving inflammation and may provide a molecular framework for understanding its link to heart disease, viral infections, and cancer.

SourceUniversity of California - Los Angeles·JournalGenome Biology·DateSep 12, 2007

DNA analysis shows true dispersal of protozoa

A study published in BMC Evolutionary Biology found that some protozoa are globally dispersed, while others are geographically restricted, suggesting a moderate degree of endemicity. The analysis used a new fast-evolving DNA marker to reveal higher biodiversity than previously thought.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateSep 12, 2007

Righting the balance: energy for health

The Lancet Series on Energy and Health highlights the critical link between energy and health, calling for global control of greenhouse gases and affordable technologies to reduce indoor air pollution. The series advocates for a low-carbon, low-energy transportation system and economic policies that mitigate harmful energy practices.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 12, 2007

Taxol bristle ball: a wrench in the works for cancer

Researchers at Rice University have discovered a way to load dozens of molecules of the anti-cancer drug paclitaxel onto tiny gold spheres, creating a uniform delivery system that targets cancer cells more effectively. The new approach aims to reduce side effects and improve the effectiveness of chemotherapy.

SourceRice University·JournalJournal of the American Chemical Society·DateSep 12, 2007

Lighter gas reduces damage to optics in extreme ultraviolet lithography

Scientists have developed a technique to generate light and reduce damage in extreme ultraviolet lithography by adding a lighter gas to the plasma. This reduces the number and energy of xenon ions reaching the collector surface, extending its lifetime while maintaining minimal impact on light production.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalIEEE Transactions on Plasma Science·DateSep 12, 2007

Physicists pin down spin of surface atoms

UC Berkeley physicists have successfully measured the spin of an individual atom on a surface, a key achievement for both quantum computing and spintronics. By employing low-temperature spin-polarized scanning tunneling spectroscopy, researchers were able to determine the spin of isolated adatoms atop cobalt nanoislands.

SourceUniversity of California - Berkeley·JournalPhysical Review Letters·DateSep 12, 2007

The molecular signature of loneliness

A new study found that chronically lonely individuals have altered gene-expression patterns, including increased inflammatory signalling. This molecular signature may provide a framework for understanding the link between social isolation and diseases like heart disease, infection, and cancer.

SourceBMC (BioMed Central)·JournalGenome Biology·DateSep 12, 2007