Molecular evidence provides strong evidence that speciation rates slow down through time. New species seem to appear less and less as the number of species in a region approaches the maximum number that it can support.
Stem cell researchers used a high resolution technique to examine the genome, or total DNA content, of a pair of human embryonic stem cell lines and found that while both lines could form neurons, the lines had differences in the numbers of certain genes that could control such things as individual traits and disease susceptibility.
As growing demand for clean water stretches even the resources of the world's largest industrialized nations, scientists and engineers are turning to new technology and novel ideas to find solutions.
New research holds promise for thousands who suffer from REM Sleep Behavior Disorder. RDB, a neurological disorder that causes violent twitches and muscle contractions during rapid eye-movement (REM) sleep, can lead to serious injuries.
A new method of filming blood-vessel cells that move in accordance with targeted signals has been developed. The method can also be used to study how migration of cancer cells and nerves can be controlled. Formation of new blood cells and lymph vessels takes place with a number of different diseases.
Mayo data showed that 82 percent of NFL players under age 50 had abnormal narrowing and blockages in arteries, compared to the general population of the same age. This finding suggests that the former athletes face increased risk of experiencing high blood pressure, heart attack or stroke.
Researchers have a new strategy for designing the next generation of synthetic vaccines that could leadto more effective treatments for fighting malaria, tuberculosis, AIDS and other infectious diseases. These conditions kill more than 17 million people around the world each year.
Long known for its role in preventing anemia in expectant mothers and spinal birth defects in newborns, the B vitamin folate, found in leafy green vegetables, beans and nuts has now been shown to blunt the damaging effects of heart attack when given in short-term, high doses to test animals.
Researchers have made a case study of a green community. The report "Green Schemes: Sustainable Urbanism in Garfield Park" presents 80 concepts such as filtration gardens, narrowed roadways, and an elevated bikeway adjacent to the Green Line tracks. Graduate students and faculty in urban planning, architecture and landscape architecture conceived the schemes.
Neurons spoke to Dr. Joe Z. Tsien when he was a sophomore college student searching for some meaningful extracurricular activity. He had stopped by the lab of a brain researcher at Shanghai's East China Normal University. The room was dark except for a light shining on the brain. "You could hear this pop, pop, pop, pop," says Dr. Tsien, brain scientist who recently came to the Medical College of Georgia from Boston University. "At that moment, I got interested in the brain."
One of the great ongoing challenges of astrophysics, to find out how stars evolve and die, is to be tackled in an ambitious European research program. This will involve studying in the laboratory over 25 critical nuclear reactions using low-energy stable beams of ions, in order to understand stellar evolution.
The more you know the less you care -- at least that seems to be the case with global warming. A telephone survey of 1,093 Americans by two Texas A&M University political scientists and a former colleague indicates that trend, as explained in their recent article in the peer-reviewed journal Risk Analysis.
A team of physicists and engineers has demonstrated exquisite control of single particles of light -- photons -- on a silicon chip to make a major advance towards the long sought after goal of a super-powerful quantum computer.
The Cystic Fibrosis Foundation announced that VX-770, an oral drug in development that targets a basic defect in CF, showed promising results in an ongoing Phase 2a clinical trial for patients who carry the G551D mutation of CF.
