String theory has come under fire in recent years. Promises have been made that have not been lived up to. Theoretical physicists have now for the first time used string theory to describe a physical phenomenon — the quantum-critical state of electrons leading to high-temperature superconductivity.
Antibodies to a wide range of substances that can aggregate to form plaques, such as those found in Alzheimer’s patients, have been identified in the blood and cerebrospinal fluid of healthy people. Levels of these antibodies decline with age and, in Alzheimer’s patients, with increasing progression of the disease.
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Scientists have reconstructed sea-level fluctuations over the last 520,000 years. Comparison of this record with data on global climate and CO2 levels from Antarctic ice cores suggests that even stabilization at today’s carbon dioxide levels may commit us to much greater sea-level rise over the next couple of millennia than previously thought.
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Understanding the molecular signals that guide early cells in the embryo to develop into different organs provides insight into ways that tissues regenerate and how stem cells can be used for new therapies. Researchers have investigated a trio of cell-signaling pathways that work simultaneously, converging to direct pancreas and liver progenitor cells to mature into [...]
Researchers have shown that public information readily gleaned from governmental sources, commercial data bases, or online social networks can be used to routinely predict most — and sometimes all — of an individual’s nine-digit Social Security number.
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Researchers have discovered that a common antioxidant, widely available as a health food supplement, may help stop the urges of those with trichotillomania, a disorder characterized by compulsive hair-pulling.
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A new prostate cancer “homing device” could improve detection and allow for the first targeted treatment of the disease. Researchers have synthesized a molecule that finds and penetrates prostate cancer cells and has created imaging agents and therapeutic drugs that can link to the molecule and be carried with it as cargo.
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Chronic seizures caused by traumatic head injuries may result from chemicals released by the brain’s immune system attempting to repair the injured site, according to a new study.
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An artificial underground cave, the largest in Israel, has been exposed in the Jordan Valley in the course of a new survey. Archeologists reckon that this cave was originally a large quarry during the Roman and Byzantine era. Various engravings were uncovered in the cave, including cross markings, and it is assumed that this could [...]
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Endocrinologists have found that inhaled growth hormone is well tolerated by children with growth hormone deficiency and that this easy-to-use method can safely deliver GH to the blood stream. This first pediatric study of administering GH through the lungs may also help researchers interested in using this convenient method for effectively delivering other types of [...]