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ANN ARBOR, Mich. — University of Michigan researchers have found that patients with severe cases of the H1N1 virus are at risk for developing severe complications, including pulmonary emboli, according to a study published today in the American Journal of Roentgenology.

A pulmonary embolism occurs when one or more arteries in the lungs become blocked. The condition can be life-threatening. However, if treated aggressively, blood thinners can reduce the risk of death.

Contestants on TV shows like Top Chef and Hell's Kitchen know that their meat-cutting skills will be scrutinized by a panel of unforgiving judges. Now, new archaeological evidence is getting the same scrutiny by scientists at Tel Aviv University and the University of Arizona.

Their research is providing new clues about how, where and when our communal habits of butchering meat developed, and they're changing the way anthropologists, zoologists and archaeologists think about our evolutionary development, economics and social behaviors through the millennia.

Bosses who are in over their heads are more likely to bully subordinates. That's because feelings of inadequacy trigger them to lash out at those around them, according to new research from the University of California, Berkeley, and the University of Southern California.

Laughter is an emotional expression that is innate in human beings. This means laughing at others is also believed to be a universal phenomenon. However, the fear of being laughed at causes some people enormous problems in their social lives. This is known as gelotophobia, a disorder that affects people in all cultures alike.

AUSTIN, Texas – A team of scientists, led by a biomedical engineer at The University of Texas at Austin, have demonstrated – for the first time – that mathematical models created from data obtained by DNA microarrays, can be used to correctly predict previously unknown cellular mechanisms. This brings biologists a step closer to one day being able to understand and control the inner workings of the cell as readily as NASA engineers plot the trajectories of spacecraft today.

A team of international molecular scientists, led by a Monash University researcher has discovered a new, fast mechanism by which cells communicate change – for example their location during spreading of a cancer in the human body – to adjacent cells.

The discovery sheds new light on cell behaviour and could lead to the development on new drugs to combat diseases such as cancer, rheumatoid arthritis and Alzheimer's disease.

The evolution of altruism has long puzzled researchers and has mainly been explained previously from ultimate perspectives—I will help you now because I expect there to be some long-term benefit to me. However, a new study by researchers at the Primate Research Institute (PRI) and the Wildlife Research Center (WRC) of Kyoto University shows that chimpanzees altruistically help conspecifics, even in the absence of direct personal gain or immediate reciprocation, although the chimpanzees were much more likely to help each other upon request than voluntarily.

Washington, DC – Survivors and patients with cancers and heart disease, along with patient advocate organizations and physicians, today urged policymakers to enhance early diagnosis of deadly diseases by preserving access to advanced imaging, such as MRI and CT scans, in final health care reform legislation.

Researchers utilizing computed tomography (CT) scans have found that patients with severe cases of the H1N1 virus are at risk for developing severe complications, including pulmonary emboli (PE), according to a study to be published online Oct. 14, 2009, in the American Journal of Roentgenology. The study will be published in the December issue of the AJR.

A pulmonary embolism occurs when one or more arteries in the lungs become blocked. The condition can be life-threatening. However, if treated aggressively, anti-coagulants (blood thinners) can reduce the risk of death.

OTTAWA - A recent study led by Dr. Khaled El Emam, the Canada Research Chair in Electronic Health Information at the CHEO Research Institute, found that the information in hospital prescription records can quite easily re-identify patients.

Imagine the gruesome sound of bones snapping as a thirsty, 30-ton dinosaur tramples a heap of fresh carcasses on his way to a rapidly shrinking lake.

That's the scene revealed by a painstaking analysis of thousands of bones unearthed near Moab, Utah by geologists from Brigham Young University.

So far the researchers have identified 67 individual dinosaurs representing 8 species – and they have only scratched the surface of this diverse quarry. Mysteriously, nearly all of the 4,200 bones recovered so far are fractured, as reported in the scientific journal Palaeo.

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.

Later diagnosis, less first-course treatment and race are the main reasons for the difference in mortality between rich and poor breast cancer patients. A new study, published in the open access journal BMC Cancer, suggests that targeted interventions to increase breast cancer screening and treatment coverage in worse-off patients could reduce much of the socioeconomic disparity in survival.

The rate of undesirable events in teaching hospitals increases at the beginning of the academic year, regardless of trainees' level of clinical experience, concludes new research from Australia published on bmj.com today.

An international group of researchers from the University of Leicester (UK), and the Geological Institute, Beijing (China) have identified a new type of flying reptile – providing the first clear evidence of an unusual and controversial type of evolution.