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191,281 articles from EurekAlert

Propolis has proved to be a product with ability to have beneficial effects for health

Over the past five years, Neiker-Tecnalia, in collaboration with the Fundacion Kalitatea, apicultural associations in the Autonomous Community of the Basque Country, honey producing plants and Basque governmental bodies, has undertaken R&D projects associated with the beekeeping sector. Various products derived from the beehive have been studied and propolis has proved to be a product having...

Puberty a gateway to heart disease for Canada's teens

A seven-year ongoing study examining over 20,000 Canadian grade 9 students shows most already have at least one major risk factor for heart disease and stroke, Dr. Brian McCrindle told the Canadian Cardiovascular Congress 2009, co-hosted by the Heart and Stroke Foundation and the Canadian Cardiovascular Society.

Science learning outside of school

A great deal of science learning takes place outside of classrooms -- in museums and after-school programs, for example, and through TV programs, books and online activities. "Surrounded by Science: Learning Science in Informal environments," new from the National Research Council, recommends ways museum professionals, media specialists and educators can create experiences that foster science...

Snail fossils suggest semiarid eastern Canary Islands were wetter 50,000 years ago

Isotopic measurements performed on fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands resulted in oxygen isotope ratios that suggest the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years, according to research by Yurena Yanes and Crayton Yapp at Southern Methodist University in Dallas.

Stanford study recommends change in treating pulmonary embolisms

William Kuo, M.D., was the on-call interventional radiologist one Friday night three years ago when he received a call from the intensive care unit at Stanford Hospital & Clinics. What happened that night would set Kuo on a three-year mission to design and implement studies to reveal the safety and effectiveness of a new treatment called catheter-directed therapy or catheter-directed thrombolysis...

Swine flu vaccine must be free and safe for high uptake

Almost half of adults surveyed in summer 2009 in Hong Kong say they would take up free swine flu vaccination. However, this figure drops to around 1 in 7 if the price they have to pay for the vaccine reaches $26. In the absence of proved efficacy and safety, the figure decreases to less than 1 in 20, according to one of the first studies on behavioral intentions and A/H1N1 vaccination, published...

TBI-vision loss impacts vets; low-vision patients may have hallucinations

Today's scientific program, 2009 American Academy of Ophthalmology -- Pan-American Association of Ophthalmology Joint Meeting, includes a Veterans Administration study that indicates that Iraq and Afghanistan veterans with vision loss from traumatic brain injury have significantly poorer quality of life than comparable civilian patients, and a Harvard doctor's insights on how to best evaluate...

The skeleton: Size matters

It has long been known that the identity of each vertebra is due to the activation of a class of genes called "Hox." Now, in the latest issue of Developmental Cell researchers from the Instituto Gulbenkian de Ciencia, in Portugal, the Institute KNAW and University Medical Center show that besides determining the identity of the vertebrae, Hox genes also have a say in how many are going to be...

The true North -- Strong when salt free

A move from a traditional diet to the sodium-laden Western diet is fueling a spike in the blood pressure of the Inuit in Canada's North, Dr. Marie-Ludivine Chateau-Degat told the Canadian Cardiovascular Congress 2009, co-hosted by the Heart and Stroke Foundation and the Canadian Cardiovascular Society.

University of Cincinnati researchers create all-electric spintronics

Scientists have always attempted to develop spin transistors by incorporating local ferromagnets into device architectures. A far better and practical way to manipulate the orientation of an electron's spin would be by using purely electrical means. A team of researchers led by the University of Cincinnati's Philippe Debray and Marc Cahay is the first to find an innovative and novel way to control...