The global movement patterns of all four seasonal influenza viruses are illustrated in new research, providing a detailed account of country-to-country virus spread over the last decade and revealing unexpected differences in circulation patterns between viruses. In the study, an international team of researchers led by the University of Cambridge and the Fred Hutchinson Cancer Research Center, and including allRead more

Experimental physicists successfully cooled molecules in a gas of sodium potassium to a temperature of 500 nanokelvins -- just a hair above absolute zero, and over a million times colder than interstellar space. The researchers found that the ultracold molecules were relatively long-lived and stable, resisting reactive collisions with other molecules. The molecules also exhibited very strong dipole moments --Read more

Investigators from Massachusetts General Hospital (MGH) and the Ragon Institute of MGH, MIT and Harvard have added another piece to the puzzle of how a small group of individuals known as elite controllers are able to control HIV infection without drug treatment. In their paper published in the open-access journal PLOS Pathogens, the research team reports finding that dendritic cellsRead more

Although the Universe may seem spacious most galaxies are clumped together in groups or clusters and a neighbor is never far away. But this galaxy, known as NGC 6503, has found itself in a lonely position, shown here at the edge of a strangely empty patch of space called the Local Void. NGC 6503 is only some 18 million light-yearsRead more

The increasing use of video games is often blamed for children's lack of interest in physical activity, but a new study suggests that active video games may actually be a source of moderate or intense physical activity in children five to eight years old. "Our study shows video games which wholly engage a child's body can be a source ofRead more

New work used laboratory techniques to mimic stellar and planetary conditions, and observe how noble gases behave under these conditions, in order to better understand the atmospheric and internal chemistry of these celestial objects. The matter that makes up distant planets and even-more-distant stars exists under extreme pressure and temperature conditions. This includes members of a family of seven elementsRead more

Academic researchers in Iran used biodegradable polymers to produce drug nanocarriers able to carry and release a type of anticancer drug in cancerous cells. The research was carried out to develop the applications of these types of drugs and produce and coat magnetic nanoparticles with biocompatible copolymers as an appropriate bed for doxorubicin anticancer drug. According to the executor ofRead more

Fat needs its place alongside the basic tastes of sweet, sour, bitter, salty and umami because it evokes unique sensations, US researchers said in a new study. The sixth flavor should be known as "oleogustus," a combination of oily and taste in Latin, according to Purdue University scientists who published their study in the journal Chemical Senses. "The taste componentRead more

New research suggests dinosaurs like Tyrannosaurus rex and other carnivorous theropods are heavily indebted to a unique serrated tooth structure that enabled their hunting prowess. Imaging analysis of theropod teeth reveal a penetrating saw-like structure that allowed T. rex and Allosaurus, as well as earlier theropods like Coelophysis, to slash through thick animal skin and bone. Researchers at the UniversityRead more

Preschoolers don't care how hard they worked to win a prize. If it's a lame reward, it's likely to go in the garbage. But with age, research shows, kids learn to appreciate the work an uninspiring prize symbolizes. To value a prize, not for the prize itself, but for the work it took to receive, may seem like behavior thatRead more