Automobile crashes remain the leading cause of death for adolescents and young adults, compounded by the effects of alcohol and failure to use seatbelts. Although males have tended to be associated with alcohol-related crashes, a study to be presented at the 2007 Society for Academic Emergency Medicine (SAEM) Annual Meeting shows that young females are beginning to show an alarming increase in fatal automobile crashes related to alcohol use and a failure to use seatbelts.

Mayo Clinic researchers and a group of international collaborators have discovered a correlation between an extreme form of sleep disorder and eventual onset of parkinsonism or dementia.

Clinical observations and pathology studies, as well as research in animal models, led to the findings that patients with the violent rapid eye movement sleep (REM) behavior disorder (RBD) have a high probability of later developing Lewy body dementia, Parkinson’s disease or multiple system atrophy (a Parkinson’s-like disorder), because all of these conditions appear to stem from a similar neurodegenerative origin.

Scientists have found hundreds of new marine creatures in the vast, dark deep-sea surrounding Antarctica. Carnivorous sponges, free-swimming worms, crustaceans, and molluscs living in the Weddell Sea provide new insights into the evolution of ocean life.

They describe how creatures in the deeper parts of the Southern Ocean - the source for much of the deep water in the world ocean – are likely to be related to animals living in both the adjacent shallower waters and in other parts of the deep ocean.

Cracks in the icy surface of Saturn's moon Enceladus open and close daily under the pull of Saturn's gravity, according to new calculations by NASA-sponsored researchers.

"Tides generated by Saturn's gravity could control the timing of eruptions from cracks in the southern hemisphere of Enceladus," said Dr. Terry Hurford of NASA's Goddard Space Flight Center, Greenbelt, Md. Hurford is lead author of a paper on this research appearing in Nature May 17.

Chemical "relaxers" used to straighten hair are not associated with an increased risk of developing breast cancer among African-American women, say researchers who followed 48,167 Black Women's Health Study participants.

In the May issue of Cancer Epidemiology, Biomarkers & Prevention, researchers from Boston University and Howard University Cancer Center found no increase in breast cancer risk due to the type of hair relaxer used or the frequency and duration of use. Women who used relaxers seven or more times a year over a 20 year span or longer had the same risk as women who used the chemicals for less than a year, researchers say.

Multidrug-resistant strains of the Acinetobacter calcoaceticus-baumannii complex have been infecting injured soldiers treated in US military hospitals in Iraq. US soldiers in Iraq do not carry the bacteria responsible for these difficult-to-treat wound infections.

Investigator Matthew E. Griffith, MD, (Brooke Army Medical Center at Fort Sam Houston, San Antonio, Texas) and colleagues found that drug-resistant strains of Acinetobacter calcoaceticus-baumannii complex are not present on the skin of uninjured soldiers in Iraq, as had been expected.