Brightsurf Science News & Current Events

July 11, 2001
Soil suggests early humans lived in forests instead of grasslands
Carbon isotope evidence in almost 6-million-year-old soils suggests that the earliest humans already were evolving in - and likely preferred - humid forests rather than grasslands, report a team of scientists working in Ethiopia.

New great white shark study has conservation implications
A new study spearheaded by a University of Colorado at Boulder researcher that indicates male great white sharks roam Earth's oceans much more widely than females has implications for future conservation strategies for the storied and threatened fish.

Depression common in single mothers receiving welfare
Single mothers of young children receiving welfare are more likely to suffer from depressive symptoms that may indicate clinical depression, yet few receive mental health treatment, according to research conducted at the Johns Hopkins Bloomberg School of Public Health.

Study: N.C. educates only a quarter of physicians practicing in the state
Ask people on the street what percentage of North Carolina doctors attended medical school in the state and, researchers say, most would guess half or more.

Study shows top predator makes prey population vulnerable in catastrophe
Biologists at the University of California, Davis, and Washington University in St.

Left handers at twice the risk of inflammatory bowel disease
Left handers seem to be at twice the risk of developing inflammatory bowel disease, such as Crohn's disease and ulcerative colitis, suggests research in Gut.

Living liver transplant is Albuquerque woman's Father's Day gift to dad
For most kids, a new necktie, a good book, or even a favorite music album are considered typical Father's Day gifts.

Jefferson researchers use gene therapy for rare, inherited brain disease
A team of scientists, neurosurgeons and physicians at Thomas Jefferson University Hospital are for the first time using a novel form of gene therapy for Canavan disease, a fatal, neurodegenerative childhood disorder.

Study: quality of neighborhood tied to coronary heart disease
Living in poorer neighborhoods increases the likelihood of developing coronary heart disease, according to a new national study involving more than 13,000 people in four parts of the United States.

Progress 'stalled' in controlling tobacco use in California
California's tobacco control program is

California awards UCLA $50 million to administer statewide prostate cancer treatment program
University and state officials announced today the establishment of a new statewide prostate cancer treatment program to help uninsured men with prostate cancer receive critical medical care.

Researchers discover gene that could be key in evolution of hardwoods
Researchers at Michigan Technological University have discovered a gene that may have played a key role in the evolution of hardwood trees such as oaks and maples.

New technique dates faults near earth's surface
A new approach developed by scientists at the University of Michigan and ExxonMobil Upstream Research Company allows direct dating of faults---surfaces along which rocks break and move---near Earth's surface.

OSU scientists link rapid bone loss to chemotherapy
Scientists at The Ohio State University Comprehensive Cancer Center say chemotherapy in young, early-stage breast cancer patients often leads to rapid and significant bone loss within months of beginning treatment.

Scientists seeking secrets of 'Lost City'
The remarkable hydrothermal vent structures discovered last December in the mid-Atlantic, including an 18-story vent taller than any seen before, are formed in a very different way than ocean-floor vents studied since the 1970s.

Lymphocytes in early atherogenesis
In addition to their characteristic accumulation of macrophage-derived foam cells and proliferation of smooth muscle cells, atherosclerotic lesions contain T lymphocytes, predominantly of the Th1 class.

Hammering out the role of IDX1 in diabetes
The Habener lab, which has previously implicated the transcription factor IDX-1 in pancreatic development and function, has now engineered a mouse strain in which to study the influence of this protein on diabetes.

Constipation in women linked to anxiety, depression, and feeling 'unfeminine'
Chronic constipation in some women is linked to anxiety, depression, and feeling

Tips from the Journals of the American Society for Microbiology: July 2001
Antacid use may increase susceptibility to oyster-borne illness. Five years after ban on use of antibiotics as growth promoters, resistance rates are down significantly in Denmark.

Women not 'passive victims' in domestic violence
Women who are abused by their partners are not simply passive victims, new research in the Journal of Epidemiology and Community Health, shows.

Intrakine blockade of a chemokine receptor
In one clever but still unproved scheme for blocking the progression of AIDS, a so-called ³intrakine² is to be transduced into lymphocytes to prevent surface expression of a molecule required for HIV entry.

Scarring process plays major role in kidney rejection following transplant, researchers report
The body's natural response to a wound--sending specialized cells to the transplant site to initiate the development of scar tissue--might be a major contributor to chronic kidney rejection following transplant.

Blocking 'engulfment' gives dying cells new lease on life
Research at Cold Spring Harbor Laboratory now reveals that under special circumstances, cells programmed to die during nervous system development can be brought back from the brink of death.

Study of flamingo genes reveals surprising family tree
The closest living relative of the elegant flamingo, with its long legs built for wading, is not another long-legged species of wading bird but the squat grebe, with its short legs built for diving, according to an analysis of the genes of aquatic birds published in the July issue of the Proceedings of the Royal Society.

Earliest human ancestors discovered in Ethiopia
Anthropologists have discovered the remains of the earliest known human ancestor in Ethiopia, dating to between 5.2 and 5.8 million years ago and which predate the previously oldest-known fossils by almost a million years.

NIDA to host symposium: 'MDMA/Ecstasy research: advances, challenges, future directions'
A scientific conference, hosted by the National Institute on Drug Abuse, will feature an array of international experts in the area of Ecstasy research.

Researchers find that after stopping cocaine use,
Using an animal model of drug craving in laboratory rats, researchers at the Intramural Research Program of the National Institute on Drug Abuse (NIDA) have found that craving for cocaine seems to increase, rather than decrease, in the days and months after drug use has stopped.
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