Previous Food and Drug Administration approval for use of retinoids to treat another form of childhood cancer, will mean clinical trials in pediatric medulloblastoma patients to begin with minimal delay

Researchers find that vitamin A derivatives may be highly effective and minimally toxic treatments for medulloblastoma, the most common form of childhood brain cancer. Clinical trials of the drugs, known as retinoids, are being planned for children who are at high risk for tumor relaps

Giant hollow towers of ice formed by steaming volcanic vents on Ross Island, Antarctica are providing clues about where to hunt for life on Mars.

University of Melbourne geologist, Dr Nick Hoffman has found evidence from recent infra-red images of Mars that similar structures may exist on Mars and, if life is to be found, such towers may be best place to start looking.

Hoffman has drawn attention to strange temperature anomalies in these latest Mars images taken with an inf

For over two thousand years, musicians and scientists have puzzled over why some combinations of musical tones played together sound more harmonious than others. Now, Duke University perception scientists David Schwartz, Catherine Howe and Dale Purves have presented evidence that variation in the relative harmoniousness, or “consonance,” of different tone combinations arises from people´s exposure to the acoustical characteristics of speech sounds. Schwartz and Howe are postdoctoral fellows, and Pur

On Wednesday, July 30, as scientists all over the country looked intently on, a synthetic earthquake shook a half-real building.

Part of the structure was conventional steel: full-sized structural support columns sitting in laboratories at the University of Colorado and the University of Illinois at Urbana-Champaign (UIUC).

But a third support column and the building floor that rested on them, forming a typical 1-story, 2-bay component of a modern steel frame building, exist

First Polarimetric Detection of Explosion Asymmetry has Cosmological Implications

An international team of astronomers [2] has performed new and very detailed observations of a supernova in a distant galaxy with the ESO Very Large Telescope (VLT) at the Paranal Observatory (Chile). They show for the first time that a particular type of supernova, caused by the explosion of a “white dwarf”, a dense star with a mass around that of the Sun, is asymmetric during the initial phases of exp

The world´s first human test of a vaccine against the prevalent subtype of HIV in sub-Saharan African and Asia, where millions have the virus that causes AIDS, is now under way. The clinical trial uses novel technology pioneered by scientists at the University of North Carolina at Chapel Hill School of Medicine and the U. S. Army Medical Research Institute of Infectious Diseases.

The phase I trial began July 17 at Johns Hopkins University. An adult male, at low risk for HIV infection, was th