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ScienceDaily: Latest Science News
Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries in astronomy, anthropology, biology, chemistry, climate & environment, computers, engineering, health & medicine, math, physics, psychology, technology, and more -- from the world's leading universities and research organizations.

Laws of physics vary throughout the universe, new study suggests A team of astrophysicists based in Australia and England has uncovered evidence that the laws of physics are different in different parts of the universe. The report describes how one of the supposed fundamental constants of Nature appears not to be constant after all. Instead, this 'magic number' known as the fine-structure constant -- 'alpha' for short -- appears to vary throughout the universe. New compound safely reduces plaques in mouse model of Alzheimer's disease A team of scientists has synthesized hundreds of new compounds with the potential of reducing the production of the A-beta 42 peptide, a primary component of Alzheimer's disease. In mouse models, one tested compound specifically reduced levels of A-beta 42, which is believed to be responsible for the destruction of neurons, but left other essential enzymatic activities in the brain unaffected. It takes less than you think to create a starling spectacular Hundreds of starlings flocking at dusk have become a familiar sight in towns and cities across the UK. But new research suggests that the birds react to minimal information from those nearest them to create these spectacular twilight roosting displays. Muscle wasting in cancer does not spare the heart The wasting disease associated with some cancers that is typically seen affecting skeletal muscles can also cause significant damage to the heart, new research in mice suggests. Before now, cachexia, characterized by muscle wasting and dramatic weight loss, was believed to spare the heart. But a new study shows that the condition reduces heart function and changes the heart muscle structure in mice with colon cancer. Deepwater Horizon oil remains below surface, will come ashore in pulses, expert says A coastal studies expert disagrees with published estimates that more than 75 percent of the oil from the Deepwater Horizon incident has disappeared. Decision-making deficits related to driving under the influence are often undetected Driving under the influence of alcohol is a major public health problem. New findings show that people who had relapsed to DUI have subtle deficits in their decision-making abilities. These deficits tend to go undetected through conventional neuropsychological testing. Most penguin populations continue to decline, biologists warn Penguin biologists from around the world warn that ten of the planet's eighteen penguin species have experienced further serious population declines. The effects of climate change, overfishing, chronic oil pollution and predation by introduced mammals are among the major factors cited repeatedly by penguin scientists as contributing to these population drops. Parents report a widely prescribed antibiotic is effective for fragile X treatment One of the antibiotics most commonly prescribed to treat adolescent acne can increase attention spans and communication and decrease anxiety in patients with fragile X syndrome, according to a new study. Is organic farming good for wildlife? It depends on the alternative Even though organic methods may increase farm biodiversity, a combination of conventional farming and protected areas could sometimes be a better way to maintain food production and protect wildlife. Molecular gatekeeper of arthritis identified: Removal of key protein leads to initiation of disease Elimination of a molecular gatekeeper leads to the development of arthritis in mice, scientists report. The newly discovered gatekeeper is a protein that determines the fate -- survival or death -- of damaging cells that mistakenly attack the body's own tissues and lead to autoimmune disorders. Better understanding how arthritis develops will offer scientists an opportunity to explore new treatments for patients who have not had success with current therapies. Microbial breakthrough impacts health, agriculture, biofuels For the first time ever, researchers have discovered how microbes break down hemicellulose plant matter into simple sugars using a cow rumen bacterium as a model. Consumers will pay more for goods they can touch We've all heard the predictions: e-commerce is going to be the death of traditional commerce; online shopping spells the end of the neighborhood brick-and-mortar store. While it's true that online commerce has had an impact on all types of retail stores, it's not time to bring out the wrecking ball quite yet, says a team of researchers. Researchers hear puzzling new physics from graphene quartet's quantum harmonies Using a one-of-a-kind instrument, researchers have discovered an unexpected and tantalizing set of energy levels in graphene, a one-atom-thick sheet of carbon with potentially revolutionary electronic properties, when the material is exposed to extremely low temperatures and extremely high magnetic fields. Potential new drug for neurodegenerative disease identified Scientists have discovered a small molecule that helps human cells discard disfigured proteins, such as those that may be involved in Alzheimer's disease and other neurodegenerative ailments. Computer-based video analysis boosts data gathering in behavioral studies Scientists have developed a computer-based system that can learn how to identify behaviors of interest and then analyze many hours of video.

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