USGS Cautions Proper Use Of Pepper Spray To Avoid Bear Attacks
... stable, weather-resistantcompound that apparently does not lose its attractant, or irritant, propertiesquickly. This suggests "that even a single discharge has the potential toattract brown bears for a significant amount of time," he said. Smith's preliminary study involved spraying red pep...New Research Suggests REM Is About Eyes Not Dreams
... sensoryinventory is the purpose of REM sleep, why does an unborn child spend many hoursa day in REM? he a...ng the cornea." And what of our dreams? Dr.Maurice does not deny that REM sleep is associated with such phenomena asdreaming, a rise in brain temperature, p...Human Cloning: Grappling With Reality Penn Bioethicist To Explore The Facts Behind The Hysteria
...versity of Pennsylvania Health System. "Butcloning does not pose a major threat to the community or the publichealth." Caplan will present his views today at the American Associationfor the Advancement of Science annual meeting in Philadelphia. According to Dr. Caplan the major reasons for not mak...Scientists Sift Through Trash In Search Of Perfect Landfill
...e" in helping garbagedecompose. Capping landfills does reduce production of contaminated water or leachate, butthe practice virtually guarantees that the material stays around indefinitely.Ham believes there's an environmentally better alternative, that would controlwater contamination and accelerate dec...Cancer Cells Self-Destruct When "Sweet Tooth" Is Thwarted
...t cuts off tumor cells' ability to get glucose but does not cross over into thebrain," says Dang. "It might even be possible to alter 2-deoxyglucose so it behaves in this manner." Dang and colleagues plan to begin testing 2-deoxyglucose and othersugar-stopping compounds in animal models of tumors soo...Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
...e song," she said. "I hit on 'rapping' because it does mimic thesound, which is something like a Geiger counter." Professor Kelley had already shown that the Xenopus male's brain andmale muscles are specialized for his prolonged courtship songs and that thesecretion of male sex hormones, androgen...Biotech Approach To Feral Cat Problem Devised
...o note that eliminating or removing the feral cats does not work well since others seem to migrate into the recently vacated niches. Working with faculty mentor Dr. Stephen Boyle in the Virginia-Maryland Regional College of Veterinary Medicine's Center for Molecular Medicine and Infectious Disease (CMMID...Genetic Test For Alzheimer's May Improve Diagnostic Reliability
...f a patient'sblood-- by itself is inconclusive and does not provide sufficient evidence todiagnose Alzheimer's disease. Researchers discovered that when the ApoE test isadministered along with a thorough examination the validation of the clinicaldiagnosis of Alzheimer's disease could be greatly improved.......olding between the electrodes. Since DNA by itself does not pass current,they finished the wire off by attaching grains of silver along the scaffold by aprocess similar to photographic developing, forming a silver wire connecting theelectrodes. The Technion wire is 100 nanometers wide, an almost t...Lactose-Intolerant People Should Drink More Milk, Expert Says
... -- it may result in gas, bloating or nausea -- it does affect a person's health in the long-term because avoiding dairy foods reduces calcium intake. According to Savaiano, three-fourths of all calcium in diets in the United States come from dairy foods. Too little calcium in a diet can reduce bone growt...Prairies Will Be Hit Hard By Global Warming
...ere and ecosystems withfuture scenarios if society does not dramatically reduce its dependence onfossil fuels. Many kinds of migratory birds take shelter in temporary marshes thatform on farmland early in the year, Malcolm explains. As the climate warms,these marshes will dry up earlier and farme......ulated. However,uncertainty about APC's regulation does not diminish the potential of thismulti-subunit complex for anticancer therapeutics. With its seminal role inmitosis, the APC seems to be a perfect site to halt cell division. Like theanticancer drug Taxol that also disrupts mitosis, the advantage wi...Recovery From Mass Extinction Is Unexpectedly Diverse
...toEarth 65 million years ago. But that explanation does not account for thesimilarity in extinction intensities found in all four regions. Studies of therecovery rates in northern South America could determine whether proximity tothe impact site was a determining factor. "These results open up all sorts o...Food Bacteria-Spice Survey Shows Why Some Cultures Like It Hot
...o-nutrients, he adds. The antimicrobial hypothesis does explain this. The study of Darwinian gastronomy is a bit of a stretch for an evolutionarybiologist like Sherman, who normally focuses his research on the role of naturalselection in animal social behavior and is best known for his studies of one ofn...New Imaging Technique Pinpoints Dead Heart Muscle
..., the advantages of the newdevelopment are that it does not require exposure to ionizing radiation and canbe done in any of the large number of hospitals with MRI scanners. MRI scanners are quite numerous and therefore accessible to largenumbers of patients, they say. And MRI performed during the......s -- a persistent form of periodontal disease that does not respond toantibiotics or conventional therapy. Using the checkerboard technique, Pasterand Dewhirst can quickly scan many samples to identify the microbial culprits.Then investigation of virulence factors and possible custom-made treatments canbe...Non-Surgical Treatment Ends Pelvic Pain In Women
...two hours, requires light anesthesia and generally does not requirehospitalization, says Venbrux. Other authors of the paper include Anthony Eclavea, Paul R. Cordts andJames Buckley (Tripler Army Medical Center, Hawaii). --JHMI-- Media contact: Marc Kusinitz (410) 955-8665 E-mail: mkusinit@wel...Concerns For Australian Sea Lion
...d, the Australian sea lion is the only type which does not have a strict, annual breeding cycle. A female sea lion will give birth to a pup after an 18 month cycle, meaning that her pupping season occurs in alternate summers and winters, or in alternate springs and autumns. While calling for mor...Heart and Soul: The Blood Vessels And Brain Use Common Guide
...eventing nerve cells fromentering off-limits areas does double duty during the formation of bloodvessels, ...ense of direction to thegrowth of capillaries, but does so by acting in conjunction with anotherreceptor. This finding jibes with a growing notion among mol......urned on or off. In the inner ear, the mutantgene does not properly regulate other crucial genes. Deafness is the most common form of sensory impairment in humans. Onechild in 1000 is born deaf, and up to 50 percent of the population will lose atleast part of their hearing by the age of 80. ...