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Science News for October 31, 2007


US fires release large amounts of carbon dioxide

New research estimates that US fires release around 290 million metric tons of carbon dioxide annually, a significant contributor to greenhouse gas emissions. The study found that large fires can release enormous pulses of CO2 rapidly into the atmosphere, complicating efforts to understand and combat global warming.

Domestic cat genome sequenced

The domestic cat genome has been successfully sequenced, revealing approximately 65% of its euchromatic regions. The analysis identified 20,285 putative genes and hundreds of chromosomal rearrangements among mammals, shedding light on feline health and human disease.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateOct 31, 2007

3-D model of esophageal cancer

A team of scientists has developed a tissue-engineered, organotypic 3D culture system of esophageal squamous cell cancer, revealing the genetic mutations and tumor microenvironment driving the disease. The model also highlights the critical role of stromal fibroblasts in cancer progression.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateOct 31, 2007

Why do so many species live in tropical forests and coral reefs?

A recent study published in Nature finds good agreement between species richness of tropical forests and coral reefs and a simple mathematical model based on the neutral theory of biodiversity. The researchers argue that interactions between species can be largely ignored, contradicting previous claims from other scientific teams.

SourcePenn State·JournalNature·DateOct 31, 2007

Make way for the real nanopod

A team of researchers created the first fully functional radio from a single carbon nanotube, enabling tiny wireless communication devices. The nanotube radio works by detecting incoming radio waves and vibrating at its flexural resonance frequency to receive signals, offering a new approach to making radios.

Diet and lifestyle changes may help prevent infertility from ovulatory disorders

A study published in Obstetrics & Gynecology found that women who followed a combination of five or more lifestyle factors experienced significantly lower rates of infertility due to ovulatory disorders. The key factors included dietary choices and physical activity, with higher scores associated with a lower risk of infertility.

SourceHarvard T.H. Chan School of Public Health·JournalObstetrics and Gynecology·DateOct 31, 2007

Crash prevention could be a DREAM

A new study using the Driving Reliability and Error Analysis Method (DREAM) found that four scenarios contribute to single-vehicle crashes: driver fatigue, loss of traction on slippery roads, overestimation of driving skills, and panicked steering. Vehicle safety features can now be designed to compensate for these unpredictable factors.

SourceInderscience Publishers·JournalInternational Journal of Vehicle Safety·DateOct 31, 2007

ACP issues comprehensive guidelines for diagnosis and treatment of stable COPD

The American College of Physicians has released a new clinical practice guideline on diagnosing and treating stable chronic obstructive pulmonary disease (COPD). The guidelines recommend the use of spirometry in patients with respiratory symptoms, particularly shortness of breath, to diagnose airflow obstruction. For symptomatic patien...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateOct 31, 2007

BDSI files FDA NDA for BEMA Fentanyl

BioDelivery Sciences International has submitted its New Drug Application for BEMA Fentanyl, a treatment for breakthrough cancer pain, to the FDA. The application is based on positive results from clinical trials, including a Phase III efficacy trial that demonstrated significant pain reduction and low discontinuation rates.

Lush or lightweight?

Scientists at NC State University have identified genes that contribute to fruit fly alcohol sensitivity, with 72% of these genes having human counterparts. The study could lead to the development of a drug for people with higher genetic risk factors for alcoholism.

SourceNorth Carolina State University·JournalGenome Biology·DateOct 31, 2007

Using nanotech to make Robocops

Researchers have developed a way to use carbon nanotubes to stop bullets from penetrating material and even rebound their force. This could lead to more effective bulletproof materials that avoid blunt force trauma and critical organ damage.

SourceIOP Publishing·JournalNanotechnology·DateOct 31, 2007