737,286 articles

How to slash vehicle fuel use

It is possible to slash fuel use by all vehicles on U.S. roads to pre-2000 levels within a few decades, but doing so would require immediate action on several challenging fronts, according to a new analysis by MIT researchers.

Genome Sequence Of Fungus Reveals Unsuspected Ability To Use Complex Carbon Sources

The model fungus Podospora anserina has undergone substantial evolution since its separation from Neurospora crassa, as revealed from the Podospora draft genome sequence published in Genome Biology. The study also shows that the Podospora genome contains a large, highly specialized set of genes potentially involved in the breakdown of complex carbon sources, which may have potential use in...

Low Blood Levels Of Vitamin D May Be Associated With Depression In Older Adults

Older adults with low blood levels of vitamin D and high blood levels of a hormone secreted by the parathyroid glands may have a higher risk of depression, according to a new report. About 13 percent of older individuals have symptoms of depression, and other researchers have speculated that vitamin D may be linked to depression and other psychiatric illnesses, according to background information...

Saving Frogs Before It's Too Late

Highly diverse and so far apparently untouched by emergent diseases, Malagasy frogs nevertheless are threatened by ongoing habitat destruction, making proactive conservation actions especially important for preserving this unique, pre-decline, amphibian fauna.

Exhaustion Of HIV-specific T Cells May Be Caused By Chronic Exposure To Virus

The "exhaustion" of immune cells that target HIV appears to result from chronic exposure to the virus, specifically exposure to the protein segments targeted by the pathogen-killing HIV-specific CD8 T cells. A study from researchers at the Partners AIDS Research Center at Massachusetts General Hospital may have answered a key question: whether the functional impairment of these T cells is the...

New Saliva-based HIV Test May Speed Up Detection

The usual waiting period for the results of a HIV test can seem like an eternity, especially in emergency situations where results are needed immediately. Also it requires a blood sample, which is invasive and often painful. Recognizing the urgent need for a faster and less invasive diagnostic method, researchers have just finished testing a new saliva-based test that gives results in...

Understanding Plants' Coping Skills May Yield Tougher Plant Varieties

It's a familiar notion that an individual might interpret and respond to stressful events in a unique way based on previous experience and genetic predispositions. A new study by researchers at the Duke Institute for Genome Sciences & Policy finds that the same can be said of the individual cells in a plant. They respond in a variety of ways to too much salt or too little iron, both widespread...

Waterpipe Smoking On College Campuses May Contribute To Growing Public Health Problem

More and more U.S. college students are smoking tobacco using waterpipes -- or hookahs -- and it's becoming a growing public health issue, according to a new study. In a hookah, tobacco is heated by charcoal, and the resulting smoke is passed through a water-filled chamber, cooling the smoke before it reaches the smoker. Some waterpipe users perceive this method of smoking tobacco as less harmful...

Glowing Zebrafish Help Researchers Track Role Of Sugars In The Cell

The transparent embryos of zebrafish are popular models of development, and scientists routinely tag proteins with tracers to study protein trafficking in the embryo. Sugars, which decorate 90 percent of the proteins on a cell's surface, have been harder to track. Now, UC Berkeley scientists have developed a way to attach fluorophores to sugars and follow their changing patterns throughout early...

Scientists Identify 'Gatekeepers' Of Breast Cancer Transition To Invasive Disease

Scientists have made a significant discovery that clarifies a previously poorly understood key event in the progression of breast cancer. The research highlights the importance of the microenvironment in regulating breast tumor progression and suggests that it may be highly beneficial to consider therapies that do not focus solely on the tumor cells but are also targeted to the surrounding...

Creativity essential for climate targets -- existing -- housing

It is a great shame that the most creative professional group in the building trade, the architects, rarely apply themselves to existing housing. A large proportion of the Netherlands` climate targets will after all have to be achieved within existing housing. This is one of the messages to be conveyed by Prof. Anke van Hal of TU Delft in her inaugural address on Wednesday 7 May. “I see it as a...

Is quantum Internet search on the way?

In classical computing, random access memory (RAM) is needed to make things “work.” But it is subject to a certain level of energy loss. But what if you could create low-energy quantum access memory (QRAM) that would not only work in terms of quantum computing, but that could also be applied to classical computing?

MGH researchers report successful new laser treatment for vocal-cord cancer

An innovative laser treatment for early vocal-cord cancer, developed at Massachusetts General Hospital (MGH), successfully restores patients` voices without radiotherapy or traditional surgery, which can permanently damage vocal quality. This new option for patients, which has now been used in more than 25 patients, was reported on May 1 at the annual meeting of the American...

Sprint Nextel silent on report of DT mulling bid

(AP) -- Sprint Nextel Corp. was silent about its future Monday as reports emerged that the company was considering spinning off or selling Nextel and that Deutsche Telekom AG was investigating a bid to buy the struggling wireless provider.

Nanotube production leaps from sooty mess in test tube to ready formed chemical microsensors

Carbon nanotubes` potential as a super material is blighted by the fact that when first made they often take the form of an unprepossessing pile of sooty black mess in the bottom of a test tube. Now researchers in the University of Warwick`s Department of Chemistry have found a way of producing carbon nanotubes in which they instantly form a highly sensitive ready made electric circuit.

Screw worm outbreak in Yemen

An outbreak of the insidious ´screw worm´ fly in Yemen, is threatening livelihoods, in a country where rearing livestock is a traditional way of life. In recent weeks, a Ministerial delegation was at the IAEA in Vienna, Austria, to turn to the international community for emergency assistance to fight the deadly pest.

Smart Miniature Pump

Medicines sometimes have to be administered in extremely small quantities. Just a few tenths of a milliliter may be sufficient to give the patient the ideal treatment. Micro-pumps greatly facilitate the dosage of minute quantities. Pumps like these have been built and constantly optimized for over 25 years. They find application in numerous areas - from medical engineering to microproduction...