Tag: "conclusion" at biology news

Dating A Caveman

"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 t...

Munching Microbes Make A Meal Out Of Toxic Substances

...oil was higher than normal background levels. "Our conclusion is that there are more of this type of microbe at these sites because they're eating one of their favorite foods -- petroleum," Nies says. The standard method for cleaning up contaminated soil is to excavate it and truck it to a landfill, which not o...

Couch Potatoes, Not French Fries, May Be To Blame For Obesity

...Reno, Nev. The research was funded by Purdue. "One conclusion that I would derive from this data is that changing exercise habits could be more to blame than diet," Binkley says. "It may be couch potatoes, not french fries, that are the heart of the problem." There is little doubt that obesity is a burgeoning p...

Fossils Show British Columbia Was Once 2,000 Miles South

...s noevidence of heating, and remagnetization, the conclusion was that the rockswere formed far to the south 70 to 80 million years ago, based on the evidenceof fossil dating. Ward concedes that criticisms are certain to be leveled at the newfindings. Some geologists have theorized that the sedimentary ...

Study: Hydrogen Bonds Aren't Key To DNA Pairing After All

...any givenpartner. "The apparently inescapable conclusion is that H-bonds arenot absolutely required," agree...und in many textbooks, seems inadequate." The conclusion is based upon the finding that growingstrands of DNA can accurately incorporate a nucleotide thatclo...

Reanalysis Of International Data Finds Sharp Decline In Sperm Density

...nd time period, most studies have come to the same conclusion - that spermdensity has declined. In fact, a 1992 review of 61 such studies (Evidence fordecreasing quality of semen during past 50 years, E. Carlsen, A. Giwercman, andN. Skakkebaek, British Medical Journal, vol. 305, page 609) revealed a steadydecli...

Strange South American Fossil Mammals Found In Madagascar And India

...frica, which lends credence to the research team's conclusion that Africa was relatively isolated during the 35 million years of the Late Cretaceous. "It's not just the mammal evidence that suggests that Africa was off doing its own thing; the dinosaur evidence also indicates a high degree of African endemism ...

Natural Variability Is Key To River Restoration

... but it's not much of a wolf anymore. That is the conclusion of a six-university panel of river experts whose report, "The Natural Flow Regime: A Paradigm for River Conservation and Restoration," is published in the December 1997 issue of the journal BioScience (Vol. 47, pp. 769-784). Letting a river do it...

SFSU Biologist Deciphers Desert Animals' Whistles And Drumbeats

...espond to a neighbor's foot stomps, supporting the conclusion that these solitary rodents don't use stomping to warn each other of an approaching predator. Randall used playback experiments to test the gerbils' responses to different kinds of sounds. She played the taped sounds of moderate and then rapi...

Low Cholesterol? Reduced Sodium? What Do These Terms Really Mean?

...ect on the booklet and on the answer sheet. At the conclusion of thesurvey, subjects were debriefed. The time for each subject to complete thesurvey averaged ten minutes. RESULTS Summaries of the subjects' responses for cholesterol, fat, sodium and sugar areshown in Figures 2 through 5 respectively. The F...

Corn Rootworm Changing Behavior, Posing New Threat To Crops

...their eggs in soybean fields instead of corn. The conclusion isthat crop rotation itself has selected for a roo...nd in the southern third of Illinois. The logical conclusion is that the problem eventually will spread tothe Atlantic coast. "Given what we know about prevaili...

Wake Forest Study Shows Soy Containing A Key Ingredient Is What Lowers Cholesterol

...lcohol extraction had no such effect. "The conclusion is that the active ingredient in soy is theisoflavones," Crouse told the AHA's 38th Annual Conference of CardiovascularDisease, Epidemiology and Prevention. Scientists have long known that cardiovascular deaths and illnesses werelower in peo...

Biggest Acoustics Meeting Ever

...@psy.utexas.edu ) will discuss his striking recent conclusion that homosexual andbisexual women produce otoacoustic emissions that are more like the male pattern than those ofheterosexual women (2pPP4). Cracking the Mystery of Sonoluminescence One of the great continuing mysteries in physics is the process ...

Wake Forest Study: Dermatologists Provide Better, Cheaper Care For Fungal Skin Disease

...te professor of dermatology, and othersbased their conclusion on an analysis of visits to doctors for fungal skininfections as recorded in the National Ambulatory Medical Care Survey for1990-1994. The survey recorded 4.1 million visits to doctors for fungal skininfections during those five years. Of tho...

Researchers Identify A Protein Critical For T Cell Development And Activation

...y deficient in this cell type," Koretzkysaid. "The conclusion is that SLP-76 is absolutely critical for at lease oneessential feature of the immune system -- the development and activation of Tcells." SLP-76 appears to be as important as any of the other molecules in the signalingpathway that stimulates the im...

Frequent Genetic Mutations In Hepatocellular Carcinoma

...llular carcinoma in humans. The team reached this conclusion after studying transgenic mice programmed todevelop liver cancer: about 50% of the tumors that occurred in these micecontained the beta-catenin gene mutations. Turning to human liver cancer, theresearchers then found that 8 (26%) out of 31 tumors co...

Duke Studies Show U.S. Central Plains Vulnerable To Global Warming

... of fires fed by tallgrass prairies. Their conclusion from the study -- that the region rapidly changed witheven short-term climate fluctuations -- was not surprising, Clark said. "One reason this region is so susceptible to climate change is that itlies at the boundaries between air masses that...

Nature's Sugar High

...to their report, the space crystals reinforce the conclusion of other reports based on different macromolecules that a microgravity environment provides distinct advantages. In the best of only a few thaumatin crystals grown in microgravity, compared with many more trials conducted on earth, the microgravity g...

Anti-Microbial Agent Kills Influenza Virus

...pneumonia andtwo out of three mice died before the conclusion of the study. "We learned several important things from these preliminary studies. The firstis that BCTP is a highly effective killing agent for the influenza virus both atthe cellular level and in living animals. Equally important is that BCTP had ...

Genetically Speaking, Race Doesn't Exist In Humans

...ic decree of a minister or rabbi, it'sactually the conclusion of an evolutionary and population biologist atWashington University in St. Louis. Alan R. Templeton, Ph.D., professor of biology in Arts and Sciences atWashington University, has analyzed DNA from global human populations thatreveal the patterns of h...

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