Casanova or caveman: Scientists isolate nerve cells that choreograph male fly's courtship behavior
When a male fruit fly encounters a prospective mate, he initiates courtship by following her around and gently tapping her with his leg. If she seems interested, he serenades her with a love song. Singing is followed by more intimate acts that sometimes lead to successful mating....... Now Stanford University scientists have discovered that this elaborate courtship behavior is actually choreograp...Finding the hole in the defenses of cavity-creating microbes
Forcing the bacteria in our mouths to choke on their own acids may offer one way to stop cavities, say microbiologists at the University of Rochester Medical Center who have discovered a chink in the armor that bacteria use to survive the hostile environment of the human mouth....... Streptococcus mutans or S. mutans, the dominant bacterium in our mouths, latches onto teeth, eats sugar, and then...National Foundation For Cancer Research names UCSD's Webster Cavenee NFCR Fellow
(March 23, 2004) The National Foundation For Cancer Research, based in Bethesda, MD, has awarded a $250,000 grant to Webster Cavenee, Ph.D., Director of the San Diego Branch of the Ludwig Institute for Cancer Research, and named him NFCR Fellow. The distinguished honor allows Cavenee unique and creative flexibility to conduct scientific research over the next five years that may lead to more effe...Bones from French cave show Neanderthals, Cro-Magnon hunted same prey
A 50,000-year record of mammals consumed by early humans in southwestern France indicates there was no major difference in the prey hunted by Neanderthal and Cro-Magnon, according to a new study.... ... The paper, published in the online Journal of Archaeological Science, counters the idea proposed by some scientists that Cro-Magnon, who were physically similar to modern man, supplanted Neandert...Hebrew University excavations strengthen dating of archaeological findings to David, Solomon
A new, laboratory-based affirmation of the existence of a united Israelite monarchy headed by kings David and Solomon in the 10th century B.C.E. has been revealed as the result of excavations carried out by the Hebrew University of Jerusalem Institute of Archeology. ...... The findings have particular significance in view of the debate existing among archaeologists as to the authenticity of the...Soft drinks, teens and cavities
Soft drink purchases by teens in schools increased 1,100 percent over the past 20 years, while dairy purchases have decreased by 30 percent, according to a new report in the January/February 2003 issue of General Dentistry, the Academy's clinical, peer-reviewed journal.... ...Although federal regulations prohibit the sale of soft drinks to students during lunch hours in most schools, soft drink m...Ocean aquaculture: Technology, business practices, policies & caviar
... Sea Grant Leading National Ocean Aquaculture Research Program ... Economic Study Reveals Risks of Ocean Aquaculture Business Operations... Farming Better Caviar: Aquaculture Goal, A Gourmet's Delight ... Author Calls for Radical Reform of Aquaculture Practices...... ...Thoroughgood, O'Neill, Clark in National Spotlight...... ...New technology is being tested this summer in the Gulf of Mexic...Chimpanzee stone tool site excavated
Since 1979, Christophe and Hedwige Boesch have been following the chimpanzees of the Ta National Park, in the rainforest of the Ivory Coast and have shown that juveniles take several years to become proficient at nut-cracking. Mothers share nuts with their offspring while they are learning the behavior . The nuts they crack are actually available throughout tropical Africa, yet nut-cracking behav...Bacteria discovered in cave produce potential anti-cancer drug
SALT LAKE CITY May 20, 2002 -- A bacterium discovered Mammoth Cave in Kentucky produces a substance that may be an effective anti-cancer drug. Researchers from Grand Valley State University report their findings today at the 102nd General Meeting of the American Society for Microbiology. ...We have isolated numerous bacteria from Mammoth Cave in Kentucky. One of these bacteria produces a substa...Resumption of caspian caviar trade could mean extinction
Groups will urge trade officials to reconsider approval of beluga caviar trade... at CITES meeting in Geneva next week ......(Thursday, March 7, 2002) Yesterdays announcement by the Convention on International Trade in Endangered Species (CITES) that the Caspian Sea states could resume the caviar trade has been met with alarm by scientists and conservation organizations seeking to restore the b...Cave men diets offer insights to today's health problems, study shows
WEST LAFAYETTE, Ind. Eat meat. That's the dietary advice given by a team of scientists who examined the dietary role of fat in a study that combined nutritional analysis with anthropologic research about the diets of ancient hunter-gatherer societies.... ...But there's a catch: To be as healthy as a cave man you have to eat certain kinds of fish, wild game such as venison, or grass-fed meat such...Dentists abuzz over cavity-prevention potential of honeybee product
Dentists from the University of Rochester Medical Center and food scientists at State University of Campinas in Brazil have discovered that a substance that Brazilian honeybees make to protect their hives might prove to be a potent anti-cavity agent.... ... The substance is propolis, a sticky material like glue that bees make to hold their hives together. Bees create the brew by collecting secret...Knockout of cav-1 protein causes loss of a cellular organelle
Scientists from the Max Planck Institute of Molecular Cell Biology and Genetics in Dresden, the Franz Volhard Clinic of the Charit, Humboldt-University Berlin and Max Delbrck Center for Molecular Medicine, Berlin-Buch, were able to cause loss of caveolae and by studying mice lacking this organelle, describe the function of caveolae in mammals. The latest issue of the scientific journal "Science"...Officials delay trade restrictions on Caspian Sea caviar
... ... Conservation groups say CITES action falls short of protecting sturgeon populations ... ...PARIS Today, the Convention on International Trade in Endangered Species (CITES) agreed to an action plan that makes progress toward improved management and enforcement of depleted Caspian Sea sturgeon fisheries and places a temporary suspension on sturgeon catches through the end of 2001. Howev...Wildlife officials to consider ban on caviar exports from major Caspian Sea nations
. . . . . . Caspian Sea sturgeon whose eggs produce coveted beluga, sevruga and osetra caviar are in sharp decline, and beluga sturgeon is on the brink of extinction. The regions principal caviar exporting nations including the Russian Federation, Azerbaijan and Kazakhstan have been asked by the Convention on International Trade in Endangered Species (CITES) to slash their caviar exports b...Tea fights cavities, reduces plaque
.Drinking tea may help fight cavities. A group of researchers from the University of Illinois College of Dentistry believe that black tea and its components benefit oral healh by interfering with the harmful plaque bacteria in the mouth that cause gum disease and cavities. They report their results at the 101st General Meeting of the American Society for Microbiology in Orlando, Florida. . "In...Anthropologists find evidence of early humans in southern China cave
.A team of researchers, including Lynne Schepartz, assistant professor of anthropology at the University of Cincinnati, has discovered an unusual collection of animal and human teeth dating back over 200,000 years deep inside a southern China cave. .The evidence for human occupation of the cave is clear. There are stone tool cut marks on the animal bones, repeated findings of burnt bone, and.unu...Sightless cavefish may offer clues to eye growth, Science authors report
... ... ... ...This document is also available in (which is free to download) to view the Japanese version.... ...Ghostly pale, sightless cavefish normally develop shrunken, degenerate orbs in place of eyes. But, very young cavefish can instead develop a normal eye after receiving the lens of a sighted, surface-dwelling fish of the same species, researchers report in the 28 July issue of the j...Best bet for saving cave species
. . . The U.S. has the most cave-dwelling species worldwide and 95% . are imperiled. But protecting cave species should be . relatively easy because they are concentrated in less than 2% . of the continental U.S., according to new research presented . in the April issue of Conservation Biology. . . The nearly 1,000 species known to live in caves in the . continental U.S. were mapped David Culve...Evidence suggests food preservatives may help prevent cavities
. Preservatives commonly found in diet soda, frozen foods, juices, and many other foods appear to help prevent cavities, dental researchers said this weekend at the annual meeting of the International Association of Dental Research.. . The surprising message comes from researchers at the University of Rochester Medical Center, which is home to one of the world's leading programs in d.... GAINESVILLE, Fla.-- Fighting tooth decay could someday be as simple as using a mouth rinse, thanks to a University of Florida researcher who has genetically altered the . bacterium known to cause tooth decay into a form that may permanently prevent the disease.. . The friendlier version appears safe and long lasting, and apparently has a sweet tooth of its own, thriving on a high-sugar diet...Engineered Bacteria Scavenge Heavy Metals
.ANAHEIM, CALIF. -- Biotechnologists at Cornell University have engineered a.strain of bacteria with two environment-saving abilities: To soak up.heavy-metal pollutants, such as mercury, and then to sequester them for.recycling. .Now the researchers are ready to begin field trials of a system that should.reduce water and soil contamination to the parts-per-trillion level. .This bioremediation...Rare Cavefish Found By Scientists
.Dr. Whit Gibbons and Dr. Kurt Buhlmann, scientists from the Savannah River.Ecology Laboratory (SREL) accompanied John Jensen and Jim Ozier of the Georgia.Department of Natural Resources on a spelunking expedition in north Georgia last.week and found a rare, blind fish known as a southern cavefish. As teachers of.ecology students and courses at the University of Georgia, both Gibbons and.Buhlman...Excavations In Prehistoric Chinese Cave Uncover Unusual Collections Of Large Mammals
. . are.not the type of animal you would expect to find deep inside a.mountainous cave, but those are exactly the type of animals.showing up in large numbers in prehistoric deposits in the. in southern China.. Lynne Schepartz, a paleoanthropologist at the University of.Cincinnati, will report on results from this year's field season.in Dadong Saturday, March 28 during the annual meetin.... . Exposure to high amounts of lead is likely one cause of the.high rates of tooth decay found among certain groups, such as.children raised in the inner city, according to a study in rats.by University of Rochester dental researchers published in the.September issue of Nature Medicine. . The scientists say that while lead does not actually cause.cavities, it appears to make rats -- and..."Peking Man" is older than he looks. That's the conclusion of pioneering geochronologist Richard Teh-Lung Ku, whose new analysis of one of the most important finds in human evolutionary history indicates that the fossils date from at least 100,000 years earlier than scientists previously believed.. Ku dated the limestone caverns in which Peking Man dwelled at Zhoukoudian, not far from Beijing. I...