Female birds choose best singers to have smarter offspring
...o back up their braggadocio. Furthermore, females consistently choose males with the most elaborate songs, according to research studies. And the larger brain structures facilitate learning of complex songs and other skills. Most intriguing to neurobiologists is the finding that larger brain structures can be ......e of the study, each monkey was trained to perform consistently on a hand-reach task requiring them to pick-up food treats out of recessed wells. They were also analyzed on a Parkinsonian clinical rating scale (CRS), an observational assessment of movement analogous to one used by neurologists to assess patients...Researchers prevent obesity and diabetes in mice
...xercise. Rather than storing excess fat from their consistently bad diet, the experimental mice remained thin, did not develop diabetes and had low levels of cholesterol. But almost all of their littermates became obese, developed diabetes and had high levels of cholesterol when they ate the high-fat diet. Remar...Increased consumption of whole grain foods associated with decreased risk of stroke
...sfatty acids intake. The inverse relation was also consistently observed among subgroups of women who never smoked, did not drink alcohol, did not exercise regularly, or who did not use postmenopausal hormones. According to background information in the study, although increased intake of grain products has been ...Disposable nappies may explain the increase in male infertility
...lso measured for comparison. Temperature was consistently and significantly higher - up to 1° C above body temperature - when the disposable nappies were worn. The highest temperatures were recorded in the youngest babies. Rectal temperatures were significantly lower than scrotal temperatures when...Progressor chimpanzees could reveal mechanism for resisting AIDS
... humans, chimpanzees are the only animals that are consistently susceptible to HIV infection," explained O'Neil. "But in most studies, chimpanzees have not developed AIDS. This group of progressor chimpanzees provides an important yardstick against which we can compare long-term nonprogressor (LTNPs) chimps. If w...Binge drinking: a dangerous rite of passage
...ie concurred. "The few animal studies to date have consistently suggested that developing brains are especially sensitive to the toxic effects of alcohol," said McKinzie. "This type of study is particularly important because a large percentage of adolescents consume alcohol. Unfortunately, relatively little is ...Molecular switch that inhibits fat cell development found
...ipocytes. "In the absence of Wnt, both cell types consistently differentiated into fat cells," Ross says. When Wnt protein binds to a cell membrane receptor, it sets off a chain of biochemical signals, according to Ross. Signals are passed from one messenger molecule to another until they reach the cell nuc...Setting the real bottom line: Dr. David Suzuki to speak at ESA annual meeting
...ents as a scientist, Dr. David Suzuki has received consistently high acclaim for his thirty years of award-winning work in broadcasting. His talent for explaining the complexities of science in a compelling and easily understood way has made his television and radio series popular among scientists and non-scienti...New UF study shows value of folate for older women
... the American Dietetic Association said folate has consistently been one of the problem nutrients in the American diet. "With this new UF study, there's even more reason to focus on getting more folate from food," she said....Alcohol and thiamine deficiency together: a dangerous combination?
...es of chess) and reference memory (remembering and consistently applying the rules) appeared the most sensitive to the damaging, synergistic effects of alcohol and thiamine deficiency. Short-term working memory (incorporating the rules of chess into game strategies), on the other hand, was most affectedby alcoho......ren and young adults. The hospital has been named consistently to several elite lists of pediatric health care fa...The University of Pittsburgh School of Medicine is consistently ranked among the nation's leading medical schools. It is one of the university's six Schools of the...Monkeys pay one another for work
...ul in the effort, the monkey that secured the food consistently shared it with the helper. "It was remarkable that the second monkey helped to pull the tray even though there was no guaranteed reward of food for him," explained Dr. de Waal. "His willingness to cooperate in the pull was enhanced if he...... gain widespread use, scientists must learn to consistently control their key properties. Using only variations in chemistry and process conditions, researchers at the Georgia Institute of Technology have learned to precisely control the size and magnetic properties of one class of magnetic na...Protein that stimulates blood vessel growth also helps repair broken bones
... blood vessels. Manipulating these tiny splints consistently and accurately was a challenging technical feat, Helms said. "It requires people with great hands," she said, such as Diane Hu, MD, the staff specialist who perfected the technique. After 10 days of this treatment, x-rays showed that only cartila...Food web theory suggests ecology may be governed by general rules
...ormed similarly across the different food webs and consistently predicted their individual properties more accurately than the cascade model. A computer-imaging program designed by Williams to process the data also allowed the researchers to create a three-dimensional color diagram of each of the food webs, show......ing genes in people. But whether certain genes can consistently lengthen lives is a matter of debate. Studies in several organisms have shown that gender and environment affect thebehaviour of genes. In an attempt to gauge the extent of these effects, Trudy Mackay at North Carolina State University in Raleigh an...Road dust: Rural vehicles emit more pollutants than urban ones
...highways because of the large traffic flow. "We consistently found that the EPA models with generic input parameters over-predicted the emissions we found in the field, and that the one input the models are most sensitive to is the amount of suspendable road dust on the roadway," Turner says. "This forces a r...How biological molecules move electrons: Simplicity trumps complexity
.... The results demonstrated that the only parameter consistently required to guide the electron tunneling function was that the redox centers be within 14 angstroms of each other. For electron transfers over greater distances, the molecules used redox centers in series, spaced no more than 14 angstroms apart. Th...Brain compound's anti-aggression effects appear to reverse in monogamous male rodents
...he levels of citrulline intheir brains. They found consistently higher levels of citrulline in the mated males andfemales with pups, the animals that would aggressively confront a stranger. Theincrease was focused on an area of the brain known as the paraventricularnucleus. "That area is located in the hypothalam...