In remote Italian villages nestled between the Mediterranean Sea and mountains lives a group of several hundred citizens over the age of 90. Researchers at the University of Rome La Sapienza and University of California San Diego School of Medicine have identified common psychological traits in members of this group.

The study, publishing in International Psychogeriatrics, found participants who were 90 to 101 years old had worse physical health, but better mental well-being than their younger family members ages 51 to 75.

In a major step toward making a quantum computer using everyday materials, a team led by researchers at Princeton University has constructed a key piece of silicon hardware capable of controlling quantum behavior between two electrons with extremely high precision. The study was published Dec. 7 in the journal Science.

A team at Caltech has figured out a way to encode more than one holographic image in a single surface without any loss of resolution. The engineering feat overturns a long-held assumption that a single surface could only project a single image regardless of the angle of illumination.

The technology hinges on the ability of a carefully engineered surface to reflect light differently depending on the angle at which incoming light strikes that surface.

Hundreds of marine turtles die every year after becoming entangled in rubbish in the oceans and on beaches, including plastic 'six pack' holders and disgarded fishing gear.

The rise in plastic refuse in the ocean and on beaches is killing turtles of all species, with a disproportionate impact on hatchlings and young turtles, research by the University of Exeter shows.

Looking to bolster the body's immune system in the fight against infection and cancer, researchers at the University of California San Diego and their colleagues have identified a promising new strategy to program the immune system to meet the pathogen or malignancy in the tissues where they first pose a threat.

WASHINGTON -- Using nanoscale grass-like structures, researchers at the University of Pittsburgh, Pennsylvania have created glass that lets through a large amount of light while appearing hazy. This is the first time that glass has been made with such high levels of haze and light transmittance at the same time, a combination of properties that could help boost the performance of solar cells and LEDs.

Just as rivers move sediment across the land, turbidity currents are the dominant process carrying sediments and organic carbon from coastal areas into the deep sea. Turbidity currents can also destroy underwater cables, pipelines, and other human structures. Unlike rivers, however, turbidity currents are extremely difficult to study and measure.

The arrival of a single Black-backed Oriole bird in rural Pennsylvania - 5000 kilometres from its usual home in Mexico - was worth an estimated $US 223,851 to the economy from bird watchers flocking to see it.

The study, by a UNSW Sydney-led team, is the first to quantify the economic impact of a vagrant bird - a species observed outside its normal geographic range.

A new article by a UNSW Sydney-led team challenges the validity of current methods for forecasting the persistence of slow-growing species for conservation purposes, and provides a better approach to reducing the threat of extinction.

Previous research on wild dolphins in Australia and wild bears in North America has revealed that reproductive success is the best predictor of the viability of these long-lived populations, rather than their survival rates.

Genentech researchers have identified an enzyme that shifts pancreatic cancer cells to a more aggressive, drug-resistant state by epigenetically modifying the cells' chromatin. The study, which will be published December 11 in the Journal of Cell Biology, suggests that targeting this enzyme could make pancreatic cancer cells more vulnerable to existing therapies that currently have only limited effect against this deadly form of cancer.