New study of healthy men finds semen quality decreases with age
...s liveliness and direction of movement - and other indicators of semen quality. The researchers gathered extensive medical, lifestyle and occupational exposure history from the men, and excluded those who had smoked in the prior six months or had other relevant health problems. While age had an effect on semen...Prehistoric tusks point to earliest fossil evidence of differences between sexes
...ed, Reisz says. "All these factors are very strong indicators of armament." Reisz says these findings go beyond the standard skeletal descriptions that accompany research on fossils. "This is a wonderful opportunity to study the biology of animals that lived so long ago. Rather than just simply looking at them...Facing extreme ice conditions, coast guard, NSF deploy second icebreaker to Antarctica
...ractions (SBI) project, which is looking for early indicators of climate change in the Arctic Ocean. Researchers on a previous Healy cruise found evidence that the Arctic's Gakkel Ridge, the world's slowest spreading mid-ocean ridge, may have substantial volcanic activity. NSF concurred with a Coast Guard reco...URI biological oceanographers test shallow marine systems' response to increased nutrients
...he summer. "Our experience suggests that the best indicators of health in eelgrass beds will include measures o...r bed survival. Our experiments suggest that these indicators begin to appear with inorganic nutrient enrichment exceeding about 50 pounds of nitrogen per acre of...UF study: Calorie restriction reduces age-related brain cell death
...urgh measured the levels of cytochrome c and other indicators of apoptosis in the cytosolic fraction of the frontal cortexes areas important in learning and memory of three groups of rats: 12- and 26-month-old animals given unlimited food and water, and a group of 26-month-old rats given 40 percent fewer calo...K-State researchers use Colbert Hills process to study ecosystem of former landfill site...
...sportable process that involves monitoring several indicators that revolve around plants, animals, soil and wate...tablish an upper and lower control limit. If those indicators fall within a "sustainable range," the ecosystem is okay. However, if any indicators fall either abo...Cocaine harms brain's 'pleasure center,' addict study finds
...d during autopsy, the researchers measured several indicators of the health of the subjects' dopamine brain cells, which release a pleasure-signaling chemical called dopamine. The cells interact directly with cocaine. The team looked at levels of a protein called VMAT2, as well as VMAT2's binding to a selectiv...New study ties moderate beer drinking to lower heart attack risk
...icator of heart attack risk, along with known risk indicators such as blood cholesterol and antioxidant levels, she says. Further studies are needed. Forty-eight (48) men, ages 46-72, with coronary artery disease were divided evenly into two groups. Individuals in one group drank the equivalent of 12 ounces (on...January GSA BULLETIN media highlights
...an 8 million year age for uplift, based on several indicators of environmental change at that time and age constraints of 8 to 5 million years ago for another extensional basin in Tibet. Garzione et al. present the first detailed study of the sedimentology of one of these grabens, the Thakkhola graben in north-...January GEOLOGY and GSA TODAY media highlights
...nisms (benthic foraminifera), which can be used as indicators for changes in oceanic productivity and its season...record the duration of glacial events. Petrologic indicators of preeruption magma dynamics. Julia E. Hammer, Department of Geology and Geophysics, University of...Miniature implantable sensor likely lifesaver for patients
... measuring arterial blood gases, which are primary indicators of respiratory function, or serum lactate, which is a marker for the severity of tissue injury. Current methods require obtaining blood samples and then sending those samples to a lab for analysis....Getting at the roots of terrorism
...violence. In our report, Liu and I examined social indicators in a sample of developing countries that seem like...ons. On average, a substantial gap in all of those indicators was found between the poor countries and a sample of developed nations, with only a very few overlap...CAST releases report on environmental impacts of grazing systems on our nation's resources
...nt need to develop monitoring tools or a series of indicators that provide information to livestock producers and other land managers. Armed with this information, they will be able to make decisions that will sustain diverse ecosystems on the vast tracts of land used for grazing. These tools will require new k...Health of American Indians on decline before Columbus arrived in new world
...hered evidence on seven basic indicators of health used to assess chronic ...es. The index includes seven indicators of skeletal health measured at 65 locations in the Western Hemisphere: degenera...Field Museum plays key role in massive project to map Tree of Life
...er with their great mobility, makes them sensitive indicators of environmental quality," she adds. "Furthermore, the monitoring of bird populations is widely used to set conservation and management priorities." Partners include Australian Natural Wildlife Collection, The Field Museum, Louisiana State Universit...A red flag for lethal prostate cancer
...ein expression, as well as other common prognostic indicators used by pathologists, such as Gleason score, tumor stage or PSA levels. We found EZH2 protein expression to be significantly better at predicting clinical outcome than any other factor." Another intriguing finding reported in the Nature paper was the...NASA researchers developing tools to help track and predict West Nile Virus
..., areresearching methods to identify environmental indicators fromdata acquired on NASA Earth Observing Systems, packaged inways that highlight factors relevant to West Nile Virustransmission. For example, NASA's Healthy Planet program is researchingapproaches to publicly disseminate information from NASAEarth-...Tourists, soothsayers & scientists try to predict peak Fall foliage color
...ees, providing important information about various indicators of red fall-color development. They used state-of-the-art computer imaging technology to measure the percentage of color in each leaf throughout the seasonal cycle. In addition to nitrogen, many other factors potential climate, drought, pollution a...Living in a glass house: Ocean organism's novel dwelling helps Earth's atmosphere
...ple, might use fossil records of diatoms and other indicators to infer how carbon dioxide concentration and diatom abundance have influenced each other at different points in the past. Having a firm grasp of such historical processes has become increasingly important as scientists try to predict the effects of ......t participants with ADH2*2 had significantly lower indicators of alcohol dependence over their lifetimes. "This finding adds to the growing body of evidence that this genetic variation has a protective effect against alcoholism among Jewish groups," Hasin concludes. When the researchers divided the participants...