Isotopic Variation Current Events | Isotopic Variation News | 4
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Archaeologists find evidence of earliest African slaves brought to new world
In the early European histories of the New World, there are numerous accounts of African slaves accompanying explorers and colonists. view more (2006-02-01)
New study closes in on geologic history of Earth's deep interior
By using a super-computer to virtually squeeze and heat iron-bearing minerals under conditions that would have existed when the Earth crystallized from an ocean of magma to its solid form 4.5 billion years ago, two UC Davis geochemists have produced the first picture of how different isotopes of iron were initially distributed in the solid Earth. view more (2009-06-16)
Verification of national methane estimates now possible
New methods for verifying estimated greenhouse gas emissions, developed by scientists at Royal Holloway, University of London, will play a significant role in assessing reductions in methane emissions, important in national compliance with Kyoto protocol targets. David Lowry, Craig Holmes, Nigel Rata and Euan Nisbet of Royal Holloway’s... view more... (2001-04-25)
Positioning pelvic cancer patients on stomachs for radiation yields better results
Oregon Health & Science University Cancer Institute researchers have found that positioning pelvic cancer patients on their stomachs rather than their backs is a better method for delivering radiation therapy. view more (2007-10-29)
Variation in bitter-taste receptor gene increases risk for alcoholism
A team of researchers, led by investigators at Washington University School of Medicine in St. Louis, has found that a gene variant for a bitter-taste receptor on the tongue is associated with an increased risk for alcohol dependence. view more (2006-01-10)
Earth's Core is a Recycling Product
The planets of the solar system, including the Earth, formed about four and a half billion years ago from a swirling disk of gas and dust that was left over from the newly formed Sun. However, we do not understand, why the Earth ended up being different from other Earth-like or «terrestrial» planets and how the earliest features, like the metallic... view more... (2004-02-04)
European Commission carries out research towards preventing the occurrence of osteoporosis
Osteoporosis, which means porous bones, is a disease that thins and weakens bones, making them fragile and more likely to break. The vast majority of individuals affected by osteoporosis are women. Although the disease can strike at any age, the greatest risk for fractures from osteoporosis occurs after menopause. This is because women's bodies... view more... (2002-09-23)
Scientists discover new genetic variation that contributes to diabetes
Scientists have identified a genetic variation in people with type 2 diabetes that affects how the body's muscle cells respond to the hormone insulin, in a new study published today in Nature Genetics. The researchers, from Imperial College London and other international institutions, say the findings highlight a new target for scientists... view more... (2009-09-08)
Uranium isotope ratios are not invariant, researchers show
For years, the ratio of uranium's two long-lived isotopes, U-235 and U-238, has been considered invariant, despite measurements made in the mid-1970s that hinted otherwise. view more (2007-10-24)
Genetic marker linked to problem behaviors in adults with developmental disabilities
A common variation of the gene involved in regulating serotonin and norepinephrine in the brain may be linked to problem behaviors in adults with developmental and intellectual disabilities, new research indicates. view more (2009-07-22)
Researchers gain genome-wide insights into patterns of the world's human population structures
Through sophisticated statistical analyses and advanced computer simulations, researchers are learning more about the genomic patterns of human population structure around the world. view more (2009-05-15)
Why some people are more attractive than others
Researchers believe they have solved a mystery that has puzzled evolutionary scientists for years ... if 'good' genes spread through the population, why are individuals so different? view more (2007-03-28)
First molecular evidence of body's internal clock in controlling blood pressure
It has been known for decades that heart attacks and strokes occur most frequently in the early-morning hours. Now, researchers at the University of Pennsylvania School of Medicine have provided the first evidence for the role of our body's internal molecular clock in controlling blood pressure and a mechanism by which this occurs. view more (2007-02-20)
NIEHS researchers link gene variation to coronary heart disease
New research at the National Institute of Environmental Health Sciences, part of the National Institutes of Health, found that a common genetic variation makes some people more susceptible to coronary heart disease (CHD). view more (2006-05-12)
Nearly a quarter of children are especially susceptible to respiratory illness if they are exposed to second-hand smoke
Children with a certain genetic makeup are at heightened risk of chest infections and other respiratory illnesses due to second-hand smoke exposure, according to researchers from the Keck School of Medicine of the University of Southern California. view more (2005-12-16)
Snail fossils suggest semiarid eastern Canary Islands were wetter 50,000 years ago
Fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands show that the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years. view more (2009-10-28)
Success or failure of antidepressant citalopram predicted by gene variation
A variation in a gene called GRIK4 appears to make people with depression more likely to respond to the medication citalopram (Celexa) than are people without the variation, a study by the National Institute of Mental Health (NIMH), part of the National Institutes of Health, has found. view more (2007-08-01)
Possible genetic predictor for response to lithium augmentation in depressed patients
As in most fields of medicine, psychiatry researchers are working to identify specific types of patients, through their individual genetic variations, that may better benefit from particular drugs or combinations of drugs than other patients. view more (2007-12-07)
Bats add their voice to the FOXP2 story
When it comes to the FOXP2 gene, humans have had most to shout about. Discoveries that mutations in this gene lead to speech defects and that the gene underwent changes around the time language evolved both implicate FOXP2 in the evolution of human language. view more (2007-09-19)
Throwing the micro switch: MicroRNA may link smoking risk gene to neurobiology of addiction
During the past several years, significant progress has been made in identifying susceptibility genes for nicotine dependence through genetic linkage and association analyses. view more (2009-04-23)
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