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144,920 articles from ScienceDaily

High Rate Of Asthma Found In College Athletes

More than a third of college athletes assessed for breathing problems had test results suggesting exercise-induced asthma, even in those athletes who had no previous history of asthma, a new study shows. The findings paralleled earlier findings of a high prevalence of exercise-induced asthma among Olympic athletes. The work also underscores the need to develop more routine diagnosis and management...

How Insulin Secreting Cells Maintain Their Glucose Sensitivity

Scientists have now disclosed the mystery how the insulin-secreting cells maintain an appropriate number of ATP sensing ion channel proteins on their surface. This mechanism explains how the human body can keep the blood glucose concentration within the normal range and thereby avoid the development of diabetes.

Invasive Fish - Round Gobie - Spreading Swiftly Through Great Lakes

Ever since fishery biologists discovered non-native round gobies in the Great Lakes in 1990, scientists have been trying to figure out exactly how the unwanted intruders got there, and how they quickly spread to all five lakes. Now new information on the behavior of the fish present a new possibility. At night during the summer breeding season, countless newly hatched round gobies leave their...

Migrating Squid Drove Evolution Of Sonar In Whales And Dolphins, Researchers Argue

Sperm whales, dolphins and other "toothed" whales hunt squid so deep in the ocean they must rely on biosonar. Paleontologists argue for a likely evolutionary scenario that explains how these whales developed echolocation. What initially was a rudimentary echolocating ability to find hard-bodied nautiloids in surface waters 40 million years ago was perfected, as nautiloids declined, into a refined...

Networks Create 'Instant World Telescope'

For the first time, a CSIRO radio telescope has been linked to others in China and Europe in real-time, demonstrating the power of high-speed global networks and effectively creating a telescope almost as big as the Earth.

Neural Stem Cell Study Reveals Mechanism That May Play Role In Cancer

In the dynamic world of the developing brain, neural stem cells give rise to neurons deep within the brain's fluid-filled ventricles. These newborn neurons then migrate along the stem cell fibers up to the neocortex, the seat of higher cognitive functions. Now, scientists have discovered a key mechanism of this migration -- one that may also play an important role in other developmental processes...

New CPR Promises Better Results By Compressing Abdomen, Not Chest

A biomedical engineer at Purdue University has developed a new method to perform cardiopulmonary resuscitation that promises to be more effective than standard CPR because it increases nourishing blood flow through the heart by 25 percent over the current method. A new technique is desperately needed because conventional CPR has a success rate of 5 percent to 10 percent, depending on how fast...

New Species May Form WIth A Little Help From Immune System

Scientists discover how the immune system can drive the formation of new species. Plant geneticists and animal breeders alike know the problem: single individuals or entire broods will not thrive, some die early, or remain, even if they survive, the runts of the litter and thus not useful for continued breeding programs. What is annoying for the breeder, fascinates geneticists and molecular...

Novel Insecticidal Toxins From Bacteria

A light-emitting strain of bacteria and a nematode worm, which work together to prey on soil-dwelling insects, use insecticidal toxins to kill their insect hosts. Scientists are now investigating the potential role of these toxins in bacteria pathogenic to humans.

Parasitic Battles Can Involve Gene Transfer That Aids Evolution

Scientists have recorded the entire genomic expression of a host bacterium and infecting virus over the eight-hour course of infection. Their study leads them to speculate that the meeting between a marine bacterial host and its virus may be not just a battle between individuals, but an evolutionarily significant exchange that helps both species become more fit for life in the harsh ocean...

Physicists Establish 'Spooky' Quantum Communication

Physicists have coaxed two separate atoms to communicate with a sort of quantum intuition that Albert Einstein called "spooky." In doing so, the researchers have made an advance toward super-fast quantum computing. The research could also be a building block for a quantum internet.

Pivotal Hearing Structure Revealed

Scientists have shed light on how our bodies convert vibrations entering the ear into electrical signals that can be interpreted by the brain. Exactly how the electrical signal is generated has been the subject of ongoing research interest.

Possible Hepatitis C Vaccine

The hepatitis C virus infects up to 500,000 people in the UK alone, many of the infections going undiagnosed. It is the single biggest cause of people requiring a liver transplant in Britain. Now scientists have found monoclonal antibodies which may be a significant step towards a vaccine.