Brightsurf Science News & Current Events

September 17, 2002
Single moms in poor, rural areas aren't ruled by setting
Good parenting style and a positive personal outlook can help black single mothers in poor rural areas raise children who do well in school and cope well with life in general, according to a new research.

New technique for DNA nanostructures
A new method to make very small patterns of DNA molecules on surfaces has been developed by chemists at the University of California, Davis, and Wayne State University, Detroit.

Other highlights in the September 18 issue of JNCI
Other highlights include a study suggesting that smoking is associated with increased risk of cervical cancer among women infected by the human papillomavirus, a study of the role of BRCA1 and BRCA2 mutations in ovarian cancer, and a study suggesting that malignant urothelial cells may be susceptible to cell death by CD40 ligation.

White and Black grandmothers have different responses to raising grandchildren
Caregiving is a bigger burden on White grandmothers than it is on Black grandmothers, according to a recent study of grandmothers raising grandchildren in households that did not include either of the grandchild's parent.

Yeast research targets drug resistance battle
Evolution of a much-maligned yeast shows that drug resistance is a predictable outcome of exposure to drugs, say University of Toronto botanists.

Duke engineers creating 'more refined' global climate model
Frustrated by the limitations of present numerical models that simulate how Earth's climate will be altered by factors such as pollution and landscape modification, Duke University engineers are creating a new model incorporating previously-missing regional and local processes.

Interpretation key to early music, scholar says
Although medieval music, in existence for over eight centuries, is still heard in one form or another on radio stations around the world and in movies, no one knows how it should rightfully sound because so much musical information from that time period is missing.

100th Extra-solar planet gives clues to origins of planets
British astronomers, together with Australian and American colleagues, have used the Anglo-Australian Telescope to discover a new planet outside our Solar System .

Strong ethnic identity affects well being for some individuals
Participating in ethnic activities can make adolescents feel good about themselves -- but only if they consider their ethnic identity central to who they are, according to a study of Chinese-American teenagers.

Affluent youth prone to high distress, substance abuse
Affluent, suburban middle-school students may face certain pressures that make them susceptible to depression and more likely to smoke or use drugs and alcohol, according to a new study.

Treating effects of brain damage
The treatment of neuropsychological deficits that follow stroke or head injury comes under scrutiny at an international conference-aimed of determining which treatments work, how well they work and for whom.

FutureCar in Europe
A high-mileage, low-pollution car built by students at the University of California, Davis, will drive from Hockenheim, Germany to Paris, France between Sept.

Researchers engineer virus that blocks common genetic defect
Scientists for the first time have engineered a harmless virus to correct, rather than replace, the genetic defect causing the most common single gene disorder.

Scientist develops method for sound navigation
Drawing on the expertise of the blind, a University of Toronto professor is

Caesarean rates unaffected by level of nursing care
Continuous, one-to-one support from specially trained nurses during labour does not reduce the likelihood of a caesarean delivery, says a University of Toronto researcher.

Youth who experience discrimination carry higher stress burden
People's beliefs that they are being treated badly because of racial or gender bias increases their stress levels, and may lead to increased emotional and behavioral problems, according to a study of black and white youth.

Researchers create rare, large symmetrical crystals
Researchers at Rensselaer Polytechnic Institute in Troy, N.Y., have created large symmetrical crystals that rarely occur in nature.

Breast cancer gene may be associated with additional cancers
Two new studies suggest that people who inherit BRCA1 mutations are at an increased risk of not only breast and ovarian cancer but a number of other cancers as well.

Engineers model blood flow
A computer simulation that shows how branches and bends in blood vessels disturb smooth-flowing blood and contribute to heart disease has been built by researchers at the University of California, Davis.

Wildlife corridors shown effective
The findings suggest that corridors helped increase animal movement rates between patches in the study area.

Ad repetition may confuse consumers: study
Everybody remembers the pink bunny promoting batteries that keep going and going but is it Energizer or Duracell?

Virginia Tech wildlife sciences professor improves sheep counts in Grand Canyon
To determine population density, lamb production, and survival rates of the Grand Canyon bighorn sheep population, Michael Vaughan spends four weeks a year rafting down the Colorado River taking scientific counts of sheep.

Researcher hopes to bridge gap in stroke prevention
A gap exists between published evidence on stroke prevention and physician practice, says a study published in the Sept.

Radiologists' interpretation of mammograms varies widely
The interpretation of mammograms varies widely among radiologists practicing in a community setting, according to a new study in the September 18 issue of the Journal of the National Cancer Institute.

Vitamin E fails to join heart-health regimen
Despite its early promise, taking vitamin E does not appear to slow the progression of atherosclerosis in healthy people, according to researchers from the USC Atherosclerosis Research Unit and colleagues.

Penn study may explain cliche of 'hot-headed' men
There is a sound neurological basis for the cliché that men are more aggressive than women, according to new findings by scientists at the University of Pennsylvania School of Medicine.

UCSB neuroscientist to receive award
Steven K. Fisher, professor and founding director of the Neuroscience Research Institute (NRI) at the University of California, Santa Barbara, has been chosen to receive the Ludwig von Sallmann Prize for 2002.

American Thoracic Society Journal news tips for September (second issue)
Newsworthy highlights include studies showing that exposure to antibiotics in the mother's womb is associated with an increased risk of asthma in the child; Alaskan sled dogs who compete in the Iditarod 1100-mile endurance race are a model for human condition called 'ski asthma'; and a New York City fireman, working at 'ground zero', suffered a rare case of eosinophilic pneumonia from acute dust exposure.

Nano-welding creates tiny junctions
Researchers have discovered how to weld together single-walled carbon nanotubes, pure carbon cylinders with remarkable electronic properties.

Young black children's development affected by messages on race
How young black children learn about race may affect their cognitive and behavioral development, suggest study results.

Young children's optimism places new skills within reach
Optimism may empower people to change their behaviors for the better, but the belief that the future brings the possibility of positive change diminishes greatly as we get older, according to new research published in the journal Child Development.

Almonds: Cholesterol lowering, heart-healthy snack
Americans looking to maintain a heart healthy diet should incorporate almonds into their diet.

NASA scientists use satellites to distinguish human pollution from other atmospheric particles
Driven by precise new satellite measurements and sophisticated new computer models, a team of NASA researchers is now routinely producing the first global maps of fine aerosols that distinguish plumes of human-produced particulate pollution from natural aerosols.

Public strong on opinions - weaker on knowledge
The public's knowledge of topical science issues appears to be only slightly improved by either their education or their consumption of news media, according to interim findings from a research project at Cardiff University, UK. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to