A new twist on an age-old problem: Making knee replacements last
... tennis or going on walks - without limitations or fear of wearing out their new knees prematurely," Fregly said. One problem is the current technology to test new implant designs is ineffective, Fregly said. Simulators designed to highlight the places artificial knees will develop wear require up to thre...Hatchery salmon may endanger wild cousins
...eatened or endangered -- and many conservationists fear hatcheries are a big part of the problem. In support of this belief, new research suggests that hatchery-reared steelhead are a threat to wild chinook in the Snake River. "Our work suggests that steelhead released from hatcheries may increase the ext......) commenting on Dr. Karim Nader's discovery that a fear memory induced in a rat and reactivated after 1 -...te at which neural changes that underlies auditory fear learning occur. It is a kind of learning that can happen unconsciously. We found evidence that contr...Researchers discover gene that controls ability to learn fear
...n the brain. Understanding how this protein quells fear may lead to the design of new drugs to treat depre...g GRP's activity could affect the ability to learn fear by studying a strain of knockout mice that lacked the receptor for GRP in the brain. In behavioral e...European scholars support development of germ line modification
...s marked by much distrust and anxiety, including a fear of the results or potential results of science and technology. One of the major factors contributing to this situation is the different way in which different actors and stakeholders perceive the risk associated with the work of scientists. There is ...Antarctic ice seals life's fate
... brine lake. One reason for not drilling lower was fear that special ice-melting chemicals used to help the drilling might have contaminated samples of brine. The research overturns earlier assumptions that Lake Vida was frozen solid. "That's an important conclusion because Lake Vida is in an area that h...'Scientific balancing act' dominates AAAS top ten list of science policy stories for 2002
...ng safety with scientific openness--and preventing fear from stifling scientific discovery--was cited today by the world's largest general scientific organization, AAAS, as the key science and technology policy issue to emerge in 2002. Human cloning, stem cell science and protecting the planet's natural ...Predicting the movement of genes
...ineered plants might have on the environment. One fear is over the movement of altered genes from domesticated populations to the wild and the effect of these "escaped" genes on ecosystems. In a study published in the December issue of Ecological Applications, Charity Cummings (University of Kansas), He...Essay on genes and behavior prompts culture clash in academic journal
...mple, they pointed to Pinker's hypothesis that the fear of snakes and spiders may be genetically encoded i...nous snakes abound, local residents exhibit little fear of snakes, Ehrlich and Feldman said. ''While Pinker may have genes that make him fear snakes ... suc...The war against anti-aging medicine
...ll actually slow or arrest the processes of aging fear that the contemporary prominence of pseudoscientific anti-aging medicine could threaten the status and funding of their own research. Through their attack on anti-aging medicine, however, they may be shooting themselves in the foot. Binstock's analy...Tribal warfare: Revenge, retaliation, deterrence
...y also provides examples of revenge foresworn from fear of overwhelming counter-revenge. Between close kinsmen, revenge is usually prohibited and an injury will go unmarked by any form of retaliation, Beckerman added. Social units that are relatively close but not related often take great care to balanc...Life sciences publishers take steps to address potential misuse of information by bioterrorists
...ms when working with these agents, Atlas said. The fear that information from such research may fall into the wrong hands is causing great anxiety within the scientific community and uncertainties among the public and policy makers regarding how to balance national security with traditional openness of sc...WWII discovery may counter bioterrorists
...altered the course of World War II by reducing the fear of Lewisite's use on the battlefield."...Toronto General Hospital to be only Canadian site in first-ever genetic study of anorexia nervosa
... pursuit of thinness, emaciation, and an obsessive fear of gaining weight. It commonly begins during adolescence in girls and it runs in families. Risk of the disease has been linked to traits including perfectionism, anxiety, and obsessionality; understanding how genes contribute will provide a more comp...Chimpanzees with little or no human contact found in remote African rainforest
...impanzees that she had heard showed no fear of humans as well as interested in observing how these chimpanzees differed from those living at Gombe. Within the last few years, Goodall and other researchers have been compari...Tracking every egg? AAAS report lists practical options for regulating human cloning
...e officer and executive publisher of Science. "Our fear of reproductive cloning is understandable and appropriate. But, we must not allow those concerns to block medical advances that may someday be achieved through other kinds of research that involve cloned cells. The recent AAAS workshop was an importa...Obesity prevention program aimed at second graders
... condominiums, playgrounds have been closed due to fear of possible litigation, and the increasing threats to child safety have put an end to young people exploring to their heart's content. In the 21st century, children eat more and exercise less. Unfortunately, the computer and television have become t...Premature birth linked to lack of nutrition before pregnancy: study
...e to do with women who diet prior to pregnancy for fear they'll be unable to shed the excess weight afterwards. "Women need to think about proper diet and food intake before they even know they're pregnant because proper nutrition after pregnancy may not compensate for the lack of it beforehand. Even a mo...Four gene 'micronet' found to regulate social behavior in female mice
...t houses the body's center for emotions, including fear and anxiety. While the amygdala is processing information from the nose, another brain region, the hypothalamus, is busy producing oxytocin, which is transported to the amygdala where it binds to oxytocin receptors. At the same time, the ovaries are ...Researchers discover method of predicting drug resistance in hepatitis-B patients
... the drug until patients become clinically ill for fear that the patient will develop a drug resistance that will render lamivudine and other HBV treatments ineffective. Drug resistance occurs in approximately two thirds of treated patients. "We have long struggled with one tough question: how do you tre...