Recent Population Dynamics Current Events | Population Dynamics News
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Fat around the middle increases the risk of dementia
Women who store fat on their waist in middle age are more than twice as likely to develop dementia when they get older, reveals a new study from the Sahlgrenska Academy. view more (2009-11-24)
New tool for helping pediatric heart surgery
A team of researchers at the University of California, San Diego and Stanford University has developed a way to simulate blood flow on the computer to optimize surgical designs. view more (2009-11-24)
Nuclear weapons: Predicting the unthinkable
If a nuclear weapon were detonated in a metropolitan area, how large would the affected area be? Where should first responders first go? According to physicist Fernando Grinstein, we have some initial understanding to address these questions, but fundamental issues remain unresolved. view more (2009-11-23)
Aquatic creatures mix ocean water
Understanding mixing in the ocean is of fundamental importance to modeling climate change or predicting the effects of an El Niño on our weather. Modern ocean models primarily incorporate the effects of winds and tides. However, they do not generally take into account the mixing generated by swimming animals. view more (2009-11-23)
Measuring and modeling blood flow in malaria
When people have malaria, they are infected with Plasmodium parasites, which enter the body from the saliva of a mosquito, infect cells in the liver, and then spread to red blood cells. view more (2009-11-23)
Spotting evidence of directed percolation
A team of physicists has, for the first time, seen convincing experimental evidence for directed percolation, a phenomenon that turns up in computer models of the ways diseases spread through a population or how water soaks through loose soil. view more (2009-11-18)
Population movement can be critical factor in dengue's spread
Human movement is a key factor of dengue virus inflow in Rio de Janeiro, according to results from researchers based at the Oswaldo Cruz Foundation (Fiocruz) in Brazil. view more (2009-11-10)
There's a speed limit to the pace of evolution, Penn biologists say
Researchers at the University of Pennsylvania have developed a theoretical model that informs the understanding of evolution and determines how quickly an organism will evolve using a catalogue of "evolutionary speed limits." view more (2009-11-03)
Childhood cancer survivors less likely to marry, Yale researchers find
Adult survivors of childhood cancer are 20 to 25 percent more likely to never marry compared with siblings and the general population, Yale School of Medicine researchers report in a new study published in Cancer Epidemiology, Biomarkers & Prevention, a journal of the American Association for Cancer Research. view more (2009-11-03)
Intervals between lung cancer diagnosis and treatment displays a health care disparity
Research published in the November 2009 issue of the Journal of Thoracic Oncology has found that intervals between lung cancer suspicion, diagnosis and treatment may be attributed to health care system discrepancies. view more (2009-11-02)
LANL Roadrunner simulates nanoscale material failure
Very tiny wires, called nanowires, made from such metals as silver and gold, may play a crucial role as electrical or mechanical switches in the development of future-generation ultrasmall nanodevices. view more (2009-10-30)
Wolves lose their predatory edge in mid-life, new U of Minnesota study shows
Although most wolves in Yellowstone National Park live to be nearly six years old, their ability to kill prey peaks when they are two to three, according to a study led by Dan MacNulty and recently published online by Ecology Letters. view more (2009-10-27)
Eutrophication affects diversity of algae
Eutrophication of the seas may have an impact on genetic variation in algae, research at the University of Gothenburg shows. view more (2009-10-20)
Whale-sized genetic study largest ever for southern hemisphere humpbacks
After 15 years of research in the waters of the South Atlantic and Indian Oceans, scientists from the Wildlife Conservation Society, the American Museum of Natural History, and an international coalition of organizations have unveiled the largest genetic study of humpback whale populations ever conducted in the Southern Hemisphere. view more (2009-10-14)
Afib triggered by a cell that resembles a pigment-producing skin cell
The source and mechanisms underlying the abnormal heart beats that initiate atrial fibrillation (Afib), the most common type of abnormal heart beat, have not been well determined. view more (2009-10-13)
Scientists identify common HPV genotypes in northern India, encourage vaccination
Although a wide spectrum of human papillomavirus is seen across the population of India, HPV-16 and HPV-18 are the most common types and a vaccination targeting these types could eliminate 75 percent of the cervical cancers in the region. view more (2009-10-12)
UA scientists discover quantum fingerprints of chaos
Chaotic behavior is the rule, not the exception, in the world we experience through our senses, the world governed by the laws of classical physics. view more (2009-10-08)
Buried coins key to Roman population mystery?
University of Connecticut theoretical biologist Peter Turchin and Stanford University ancient historian Walter Scheidel recently developed a new method to estimate population trends in ancient Rome and waded into an intense, ongoing debate about whether the state's population increased or declined after the first century B.C. view more (2009-10-06)
Denver to Barcelona: Global cities and greenhouse gas emissions
Denver released the largest amount of greenhouse gases (GHG) and Barcelona the smallest amount in a new study documenting how differences in climate, population density and other factors affect GHG emissions in global cities. view more (2009-09-24)
River flow and temperature limit trout numbers
Over a 23-year study, Javier Lobon-Cervia has found the mechanism that controls the number of salmonids found each year in Cantabrian rivers. view more (2009-09-10)
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