Fra lo

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World's biggest viruses lurk in Chilean rivers and Australian lakes

Science News<p>Giant viruses, more than twice as big as the last largest known viruses, have now been unearthed from sludge across the world, researchers say.<p>Even more titanic viruses might await discovery, the scientists said, and they may have features that could blur the lines between life and …

Proposed Treatment To Fix Genetic Diseases Raises Ethical Issues

The federal government is considering whether to allow scientists to take a controversial step: make changes in some of the genetic material in a woman's egg that would be passed down through generations.<p>Mark Sauer of the Columbia University Medical Center, a member of one of two teams of U.S. …

Le Scienze

NOBEL per la fisiologia o medicina - James E. Rothman, Randy W. Schekman e Thomas C. Südhof hanno ottenuto il premio Nobel 2013 per la fisiologia o …

Henry Konietzky Dies From Vibrio Vulnificus, Flesh-Eating Salt Water Bacteria, After Wading In River

A Florida man died after contracting a flesh-eating bacterial infection while wading in a river on Saturday.<p>Henry Konietzky, 59, succumbed to the deadly infection just 28 hours after being exposed while setting crab traps in the Halifax River in Volusia County, according to Click Orlando.<p>"They …

La geometria dell'universo? Piatta o a forma di sella

Piatta, oppure leggermente aperta, con una forma che ricorda quella una sella: potrebbe essere così la geometria del nostro universo, secondo un …

Doctors Say Changes In Wheat Do Not Explain Rise Of Celiac Disease

Wheat has been getting a bad rap lately.<p>Many folks are experimenting with the gluten-free diet, and a best-selling book called Wheat Belly has helped drive a lot of the interest.<p>"Wheat is the most destructive thing you could put on your plate, no question," says William Davis, a cardiologist in …

Feds Rule Most Mobile Medical Apps Don’t Need Regulation, but Some Will

The Food and Drug Administration on Monday issued a series of rules governing which types of medical apps for mobile devices will require government …

Grow a Brain, Already

How do you know that you aren’t just a brain in a vat of bubbling chemicals, hooked up to a virtual-reality simulator? Are your hands and feet real? And what about your spouse, your child, and your dog? Are they just figments of an imagination fed by a computer that simulates what it would be like …

Maths Experts are “Made, Not Born”

<b>A new study of the brain of a maths supremo supports Darwin’s belief that intellectual excellence is largely due to “zeal and hard work” rather than</b> …

Brain activity found after 'brain death'

Maybe cats have nine lives, or maybe brain dead people aren't so dead.<p>Parts of the brain may still be active after a commonly used brain activity reading goes to a flat line, according to a study on cat brains published Wednesday in the online journal PLOS One.<p>The study came after Romanian doctors …

Are Antibiotics On The Farm Risky Business?

You've probably seen the labels on meat in the store: "Raised without antibiotics." They're a selling point for people who don't like how many drugs are used on chickens, turkey, hogs and beef cattle.<p>Activist groups, as well as prominent medical organizations, are calling for stricter rules on how …

When Our Microbes Chat, Dangerous Germs Are Eavesdropping

Science & InnovationNot Exactly Rocket Science<p>In Africa, a superb starling has just spotted an eagle and gives off an alarm call. Any starling within earshot goes on high alert, but so do nearby vervet monkeys. They have learned to eavesdrop on the starling’s calls to gain extra intelligence about …

Vaccinating Babies For Rotavirus Protects The Whole Family

A 7-year-old vaccine that has drastically cut intestinal infections in infants is benefiting the rest of America, too.<p>A study published Tuesday from the Centers for Disease Control and Prevention shows that vaccinating infants against rotavirus has also caused a striking decline in serious …

Breaking Up the Superbug Party

This bacteria produces an armoury of virulence factors and is resistant to many conventional antibiotics. It is almost impossible to eradicate <i>P.</i> …

The Immune System Response to Helminths

Immune System

Staminali, il rigetto si evita solo col trapianto autologo

Il trapianto di cellule staminali è ben tollerato dall'organismo solo quando è di tipo autologo, cioè quando le cellule provengono dallo stesso …

Fotoni e magnoni, i quanti che viaggiano in coppie

In certi sistemi fisici, i quanti sembrano prediligere la vita di coppia. Lo hanno scoperto due ricerche tra loro indipendenti pubblicate su …

Alzheimer's brain scan detects tau protein

<b>Pioneering brain imaging that can detect the build-up of destructive proteins linked to Alzheimer's has been developed by Japanese scientists.</b><p>It could lead to new ways of diagnosing the condition and of testing the effectiveness of new drugs.<p>The technology, reported in the journal Neuron, can …

Un'inaspettata attività nel cervello in coma

La frase “ha un elettroencefalogramma piatto” è considerata sinonimo di assenza di attività cerebrale. Ora però uno studio effettuato all'Università …

Il parassita che rende audaci i topi

I topi infettati da <i>Toxoplasma gondii</i>, il parassita della toxoplasmosi, non hanno paura dei gatti e questa bizzarra caratteristica comportamentale si …

Il primo pesce fossile con una vera faccia

Un nuovo pesce fossile risalente a circa 419 milioni di anni fa, ossia al periodo Siluriano, porta a un significativo cambiamento di prospettiva …

La febbre tifoide e il caso di Mary Mallon

<b>Mary Mallon</b> era nata il <b>23 settembre 1869</b>, a Cookstown, nell'Irlanda del Nord. Raggiunta l'adolescenza lasciò però la terra natale per emigrare negli …

In Life, Man Immune To HIV Helped Scientists Fight Virus

Stephen Crohn, a man best known for staying alive during the early days of the AIDS epidemic, died Aug. 23 at age 66. Throughout his lifetime, the New York artist helped researchers uncover vital clues about HIV and how to stop it.<p>Crohn's partner was one of the first people to die from AIDS in …

Doppia organizzazione per le molecole d'acqua

A bassa e ad alta densità<p>Le molecole dell'acqua sono organizzate in due modi diversi: è quanto conferma uno studio pubblicato sulla rivista Nature …

La fabbrica della 'materia oscura' della vita

Scoperta permette di capire l'origine di malattie ereditarie<p>Dopo la mappa delle sequenze di Dna che sembrano 'inutili', adesso si è scoperta …

Beer Gut: Man’s Belly Brews Own Beer

<b>Free beer might sound like heaven to some tailgaters on this football weekend, but consider the case of a man whose tummy was fermenting its own brew.</b><p>Suspected for five years of being a “closet drinker,” the 61-year-old man showed up in 2009 at a Texas emergency room with a blood alcohol …

Un gene per i difetti cellulari della sindrome di Down

Come è noto, la sindrome di Down è un disturbo genetico determinato da una copia aggiuntiva del cromosoma 21. Le tre copie del cromosoma presenti, al …

Uno stile di vita salutare può allungare i telomeri?

Una dieta corretta, l'esercizio fisico moderato e pratiche di gestione dello stress possono influire positivamente sul processo d'invecchiamento …

Come e dove nasce l'immaginazione umana

Per la prima volta un gruppo di ricercatori ha identificato dove e come si sviluppa nel cervello l'immaginazione, lo strumento mentale che permette …