Young chimpanzees show sex differences in learning
...uman learning, a sex-based learning difference may date back at least to the last common ancestor of chimpanzees and humans, the researchers said. According to current estimates, the evolutionary lines of humans and chimps split about five to six million years ago, said coauthor Anne Pusey, Distinguished ...New method for determining age of artifacts fills chronological gap for scientists
...ally. According to Ericson, quartz hydration can date objects that are between 100 and 1 million years old to within 20 to 35 percent of the object's age. Quartz can be found at archaeological excavation sites worldwide from Africa's Olduvai Gorge to China's Choukoutien and even California's Mohave Dese...East African artifacts support evolution of symbolic thinking in Middle Stone Age
...oped in humans earlier than the currently accepted date of about 35,000 years ago. Archaeologists studying the site say it may contain some of the strongest evidence yet for the early development of modern cultural behavior in humans, and is the first such discovery of its kind in East Africa, indicating...New diagnostic tool brings effective treatment closer to patients
...milar diagnostic methods are already available, to date they have involved sending samples to a centre rather than keeping the technology close to the patient and her doctor. "The BCPC will simultaneously measure expression of more than 900 important genes to augment conventional methods to clinically a......st sample of Neandertal and early human remains to date and conclude that Neandertals could not have made a significant genetic contribution to early modern humans....Pittsburgh NMR Center for Biomedical Research at Carnegie Mellon
...planted organ functions. MRI research performed to date has revealed new aspects of transplanted kidney function in laboratory animals, providing an excellent foundation to establish advanced MRI methods to monitor transplanted organ functions non-invasively in patients. High Resolution Dynamic Imaging...McGill scientists publish detailed picture of how nutrients and other molecules get into cells
...ersity have published the most complete picture to date of the components of the molecular machinery that controls the entry of nutrients and other molecules into cells. In a study published in the Proceedings of the National Academy of Sciences of the USA (PNAS), Dr. Peter McPherson and colleagues used ...Viruses may be environmentally friendly decontaminants
...ngs. "Decontamination modalities for anthrax to date have centered on the use of toxic biocides (formaldehyde, chlorine dioxide) or gamma radiation. These approaches suffer from the dual handicap of toxicity to man and the environment and/or are extremely expensive," says Leslie Baillie, one of the sci...VaxGen reports Phase I clinical trial results of anthrax vaccine candidate
...rward-looking statements that speak only as of the date of this release. VaxGen undertakes no obligation t...ew information, events, or circumstances after the date of this release except as required by law. 1 Keyserling HL, Gorse GJ, Keitel W, et al. Ascending d...Current smoke alarms pass life-saving tests
... since 1993. However, most homes built before that date are not so equipped. The NIST report also looked at the interaction of smoke alarms and residential sprinklers of the type increasingly being required in new homes. The tests reaffirmed earlier findings that smoke alarms of either type will activate...Antibiotics may not be necessary when treating children with a simple skin abscess
...ions. The prospective study, one of the largest to date on this subject, included 69 children. Patients' average age was 5 years. All children had their abscesses drained through incision, manually or spontaneously. Nearly all were initially treated with ineffective antibiotics before physicians knew whet...Carnegie Mellon scientist says new technologies boost bio-terrorism surveillance
...dication codes along with the name, address, birth date and social security number of each patient. Under the current ad hoc model of sharing data, widespread potential abuses are possible. For example, medical records for legislators, judges or law enforcement officials could be reproduced and sensitiv...Parkinson's disease genetic study progresses with $8 million grant
...is stored with no personal identification, such as date of birth or Social Security number. The discoveries may have an enormous impact on early detection, treatment and on the development of new and more effective drugs for treatment of Parkinson's disease, she said. ...Penguin bones from 'land of fire' rewrite bird's evolution
...urred in the mid-Eocene. All other penguin fossils date to long after that 'icehouse' phase began and after the Antarctic icecap is inferred present." The new find may tell a radically different story from previous discoveries about penguins and their prehistoric travels. Despite the popular association o......e Bay Program probably will not be met by the goal date of 2010 because of the lag time between implementing best management practices and the actual improvement in quality of the ground water entering the Bay. Ground water supplies about half of the water reaching the Bay; in the Chesapeake Bay watershed...Inflammation marker predicts colon cancer
...her colon or rectal cancer following their initial date of blood draw through December 2000. Of these, 131 had colon cancer and 41 had rectal cancer. Researchers then compared the health records of each of these individuals with those of up to two healthy volunteers who joined the study at the same time, ...Scientists develop plant that produces potential anti-carcinogen
... MSC in humans has not yet been tested, because to date there hasn't been a good commercial source of it that could be used in human trials. "We would be very interested in knowing the efficacy of MSC in humans, clearly. The problem has been there's no material to run such an experiment, and that will...Gulf between rich, poor will grow if high-profile nanotechnology opponents prevail: ethics experts
... but also developing countries, whose interests to date have been largely ignored. Concerns that need consideration include: How long nanomaterials will remain in the environment? How readily will nanomaterials bind to environmental contaminants? Will these particles move up through the food chain and wh...Oxygen triggered the evolution of complex life forms
...xygen as an energy source. In the largest study to date that does not focus on vertebrates, researchers from Pennsylvania State University used molecular dating methods to create a new timeline of eukaryotic evolution. By adding information about the numbers of different cell types possessed by each group......e most recent and mathematically rigorous study to date determining whether Neanderthals contributed to th...imates, and provides the most concrete evidence to date that Neanderthals are indeed a separate species within the genus Homo," Harvati added....