Just as disturbance makes a landscape susceptible to invasion by alien plants, the construction of reservoirs could be contributing to the accelerating spread of exotic aquatic species.
Just as disturbance makes a landscape susceptible to invasion by alien plant species, the construction of reservoirs around the globe could be contributing to the accelerating spread of exotic aquatic species, according to a Forum article in the June 2005 issue of BioScience. John A. Havel of
New research shows that exposure to harmful chemicals and drugs during critical developmental periods early in life may actually “reprogram” the way certain genes respond to the female hormone estrogen. This genetic reprogramming may determine whether people with a genetic predisposition for a disease actually develop the disease.
The new research shows that when rats with a genetic predisposition to uterine tumors also receive an early-life exposure to diethylstilbestrol (DES), a syntheti
The McGill University Health Center (MUHC) in Montreal is pleased to announce the first successful birth in Canada resulting from frozen eggs. A team led by Professor Seang Lin Tan, Chair of the Department of Obstetrics and Gynecology at McGill University and Director of the McGill Reproductive Centre at the MUHC in Montreal confirmed the birth of a healthy baby boy, weighing 3740grams on April 29. “We are the first in-vitro fertilization (IVF) Centre in Canada to achieve this success,” says Dr.
A scientist using NASA’s Chandra X-ray Observatory has found evidence that two white dwarf stars are orbiting each other in a death grip, destined to merge.
The data indicate gravitational waves are carrying energy away from the star system at a prodigious rate, making it a prime candidate for future missions designed to directly detect these ripples in space-time.
Einstein’s General Theory of Relativity predicted a binary star system should emit gravitation
Materials scientists at Rutgers, The State University of New Jersey, have devised a novel and easy technique to make thin, crystal-like materials for electronic devices. The technique could supplement today’s tedious and exacting method of growing crystals with an additional benefit of producing materials in sizes and shapes not now possible.
In a recent issue of the American Chemical Society journal Langmuir, Rutgers scientists and collaborators from Ceramare Corporation a
Astronomers using NASA’s Spitzer Space Telescope have imaged a giant molecular cloud being shredded by howling stellar winds and searing radiation, exposing a group of towering dust pillars harboring infant stars, according to a University of Colorado at Boulder researcher.
Nathan Smith, a Hubble Fellow and postdoctoral researcher at CU-Boulder’s Center for Astrophysics and Space Astronomy, said the violent panorama is unfolding in the Carina Nebula, located in the southern Mi
Thinking small in a time when everything was big has helped Queensland researchers to unearth new evidence that climate change, instead of humans, was responsible for wiping out Australian giant marsupials or megafauna 40,000 years ago.
Instead of only excavating ’trophy specimens’ such as giant kangaroos and wombats, the researchers from Queensland University of Technology (QUT) and Queensland Museum performed the first systematic analysis of a site in the fossil rich Darling
Until now it has been impossible to accurately measure the levels of important chemicals in living brain cells in real time and at the level of a single cell. Scientists at the Carnegie Institution’s Department of Plant Biology and Stanford University are the first to overcome this obstacle by successfully applying genetic nanotechnology using molecular sensors to view changes in brain chemical levels. The sensors alter their 3-dimensional form upon binding with the chemical, which is then vis
Researchers at The University of Texas M. D. Anderson Cancer Center may have uncovered the reason why some people who are genetically predisposed to hormone-dependent cancers develop the disease as an adult, while others who are similarly susceptible don’t.
In a study to be published on-line in the Proceedings of the National Academy of Sciences (PNAS) the week of May 30, 2005, they show, for the first time, that exposure to a pharmaceutical estrogen during fetal development c
New York’s Rochester Institute of Technology and University of Rochester to present results
Two astronomers have used NASA’s Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy.
Joel Kastner, professor of imaging science at the Rochester Institute of Technology, and Rodolpho Montez, a graduate student in physics and astronomy at the University of Rochester, will present their results today at the American
U-M researchers identify method that produces viable eggs when thawed
A new technique might allow women diagnosed with cancer the opportunity to have children when chemotherapy and radiation treatments rob them of their fertility, researchers at the University of Michigan Comprehensive Cancer Center have found. By having her eggs frozen before she begins cancer treatments, a woman can preserve the hope of one day having a baby.
Freezing eggs is one thing; thawing them
Addressing a persistent debate in the field of dyslexia research, scientists at the University of Wisconsin-Madison and the University of Southern California (USC) have disproved the popular theory that deficits in certain visual processes cause the spelling and reading woes commonly suffered by dyslexics.
Rather, a more general problem in basic sensory perception may be at the root of the learning disorder, the scientists report today (May 29, 2005) in the journal Nature Neuros
Opening a window to understand the molecular basis of a hereditary ataxia, Dartmouth Medical School researchers have identified an enzyme activity that is inactivated in all reported mutant forms of a disease protein. The discovery may lead to therapies to treat the neurological disease. The study appears in the June 3, 2005 issue of the Journal of Biological Chemistry (JBC) as Paper of the Week, an honor conferred on approximately 1% of JBC’s 6600 annual publications.
Dr. Ch
Forest landowners can greatly increase the survival rate of pine tree seedlings by changing when and how they plant, according to research conducted here. “There’s been too many (reforestation) failures over the last decade or so,” said Dr. Eric Taylor, Texas Cooperative Extension forestry specialist. “Some landowners have had to replant two, three or even four years in a row because of poor seedling survival.”
Second-year data from an ongoing comparison of planting methods sho
With the unusual opportunity that human leprosy infections provide for study of human immune responses, scientists have discovered how the body’s early warning system prompts a rapid immune response by two separate armies of defensive cells. The finding helps explain why, when threatened by microbes like the leprosy bug, this initial defense sometimes succeeds in limiting the damage, but in other cases yields to a dangerous, spreading infection.
Led by Stephan R. Krutzik of UCLA
Today’s computers and other technological gizmos operate on electronic charges, but researchers predict that a new generation of smaller, faster, more efficient devices could be developed based on another scientific concept – electronic “spin.” The problem, however, is that researchers have found it challenging to control or predict spin – which keeps practical applications out of reach.
But physicists in Europe, California and at Ohio University now have found a way to manipulate
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