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82,993 articles from ScienceDaily

• TUESDAY 21. MAY, 2013
• 21:39 Drugs found to both prevent and treat Alzheimer's disease in mice

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  Researchers have found that a class of pharmaceuticals can both prevent and treat Alzheimer's disease in mice.  

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• 21:39 New method for producing clean hydrogen

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  Engineers have developed a novel method for producing clean hydrogen, which could prove essential to weaning society off of fossil fuels and their environmental implications.  

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• 21:26 Allosaurus fed more like a falcon than a crocodile: Engineering, anatomy work reveals differences in dinosaur feeding styles

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  The mighty T. rex may have thrashed its massive head from side to side to dismember prey, but a new study shows that its smaller cousin Allosaurus was a more dexterous hunter and tugged at prey more like a modern-day falcon.  

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• 21:26 Genetic risk for obesity found in many Mexican young adults

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  As many as 35 percent of Mexican young adults may have a genetic predisposition for obesity, said a University of Illinois scientist who conducted a study at the Universidad Autónoma de San Luis Potosw.  

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• 20:09 Going green: U.S. equipped to grow serious amounts of pond scum for fuel

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  A new analysis shows that the nation's land and water resources could likely support the growth of enough algae to produce up to 25 billion gallons of algae-based fuel a year in the United States, one-twelfth of the country's yearly needs. For the best places to produce algae for fuel, think hot, humid and wet. Especially promising are the Gulf Coast and the Southeastern seaboard.  

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• 19:45 NASA’s BARREL mission launches 20 balloons

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  In Antarctica in January, 2013 -- the summer at the South Pole -- scientists released 20 balloons, each eight stories tall, into the air to help answer an enduring space weather question: when the giant radiation belts surrounding Earth lose material, where do the extra particles actually go?  

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• 19:43 NASA's IRIS mission readies for a new challenge

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  NASA is getting ready to launch a new mission, a mission to observe a largely unexplored region of the solar atmosphere that powers its dynamic million-degree outer atmosphere and drives the solar wind. In late June 2013, the Interface Region Imaging Spectrograph, or IRIS, will launch from Vandenberg Air Force Base, Calif. IRIS will advance our understanding of the interface region, a region in the lower atmosphere of the sun where most of the sun's ultraviolet emissions are generated. Such emissions impact the near-Earth space environment and Earth's climate.  

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• 19:40 NASA launching experiment to examine the beginnings of the universe

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  When did the first stars and galaxies form in the universe? How brightly did they burn their nuclear fuel? Scientists will seek to gain answers to these questions with the launch of the Cosmic Infrared Background ExpeRIment (CIBER) on a Black Brant XII suborbital sounding rocket between 11 and 11:59 p.m. EDT, June 4 from the Wallops Flight Facility in Virginia.  

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• 19:22 Radioactive nanoparticles target cancer cells

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  Researchers have found a way to create radioactive nanoparticles that target lymphoma tumor cells wherever they may be in the body.  

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• 19:22 Scientists uncover how grapefruits provide a secret weapon in medical drug delivery

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  Researchers have uncovered how to create nanoparticles using natural lipids derived from grapefruit, and have discovered how to use them as drug delivery vehicles.  

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• 19:22 Single-cell transfection tool enables added control for biological studies

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  Researchers have developed a novel tool for single-cell transfection, in which they deliver molecules into targeted cells through temporary nanopores in the cell membrane created by a localized electric field.  

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• 19:21 Aggressive behavior linked specifically to secondhand smoke exposure in childhood

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  Children who are exposed to secondhand smoke in early childhood are more likely to grow up to physically aggressive and antisocial, regardless of whether they were exposed during pregnancy or their parents have a history of being antisocial.  

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• 19:21 Poliovirus vaccine trial shows early promise for recurrent glioblastoma

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  An attack on glioblastoma brain tumor cells that uses a modified poliovirus is showing encouraging results in an early study to establish the proper dose level.  

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• 18:16 New method for tailoring optical processors

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  Physicists and engineers have unveiled a robust new method for arranging metal nanoparticles in geometric patterns that can act as optical processors that transform incoming light signals into output of a different color.  

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• 18:15 Common food supplement fights degenerative brain disorders, study suggests

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  Widely available in pharmacies and health stores, phosphatidylserine is a natural food supplement produced from beef, oysters, and soy. Now scientists have discovered that the supplement improves the functioning of genes involved in degenerative brain disorders, including Parkinson's disease and familial dysautonomia.  

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• 18:15 Evaluating a new way to open clogged arteries

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  A new study analyzes the potential usefulness of a new treatment that combines the benefits of angioplasty balloons and drug-releasing stents, but may pose fewer risks.  

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• 18:15 Finding a family for a pair of orphan receptors in the brain

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  Researchers have identified a protein that stimulates a pair of "orphan receptors" found in the brain, solving a long-standing biological puzzle and possibly leading to future treatments for neurological diseases.  

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• 18:15 Glaucoma drug can cause droopy eyelids

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  Prostaglandin analogues (PGAs) are often the first line of treatment for people with glaucoma. PGAs have long been associated with blurred vision, dryness, changes in eye color and other side effects. Now a new study has found that these drugs also cause upper and lower eyelid drooping and other issues that can interfere with vision.  

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• 18:15 Low population immunity to new bird flu virus H7N9 in humans

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  The level of immunity to the recently circulating H7N9 influenza virus in an urban and rural population in Vietnam is very low, according to the first population level study to examine human immunity to the virus, which was previously only found in birds. The study has implications for planning the public health response to this pandemic threat.  

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• 18:14 Origins of human culture linked to rapid climate change

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  Rapid climate change during the Middle Stone Age, between 80,000 and 40,000 years ago, sparked surges in cultural innovation in early modern human populations, according to new research.  

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• 18:14 Small but speedy: Short plants live in the evolutionary fast lane

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  Biologists have known for a long time that some creatures evolve more quickly than others. Exactly why isn't well understood, particularly for plants. But it may be that height plays a role. Shorter plants have faster-changing genomes.  

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• 18:13 Fourteen closely related crocodiles existed around 5 million years ago

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  Today, the most diverse species of crocodile are found in northern South America and Southeast Asia: As many as six species of alligator and four true crocodiles exist, although no more than two or three ever live alongside one another at the same time. It was a different story nine to about five million years ago, however, when a total of 14 different crocodile species existed and at least seven of them occupied the same area at the same time, paleontologists say.  

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• 16:57 Abundance and distribution of Hawaiian coral species predicted by model

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  Researchers have developed species distribution models of the six dominant Hawaiian coral species around the main Hawaiian Islands, including two species currently under consideration as threatened or endangered.  

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• 16:57 Child maltreatment increases risk of adult obesity

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  Children who have suffered maltreatment are 36 percent more likely to be obese in adulthood compared to non-maltreated children, according to a new study. The authors estimate that the prevention or effective treatment of seven cases of child maltreatment could avoid one case of adult obesity.  

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• 16:57 Visual search function: Where scene context happens in our brain

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  Though a seemingly simple and intuitive strategy, visual search function -- a process that takes mere seconds for the human brain -- is still something that a computer can't do as accurately. Over the millennia of human evolution, our brains developed a pattern of search based largely on environmental cues and scene context. It's an ability that has not only helped us find food and avoid danger in humankind's earliest days, but continues to aid us today. Where this -- the search for objects using scene and other objects -- occurs in the brain is little understood, and is for the first time discussed in a new paper.  

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