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Scientists have created single layers of a naturally occurring rare mineral called tungstenite, or WS2, and the resulting sheet of stacked sulfur and tungsten atoms forms a honeycomb pattern of triangles that have been shown to have unusual light-emitting (photoluminescent) properties.

 According to Mauricio Terrones, a professor of physics and of materials science and engineering at Penn State, the triangular structures have potential applications in optical technology; for example, for use in light detectors and lasers. 

You don't see many really old, obese people whereas you see a lot of old thin people. It is reasonable to assume, exceptions aside, that obesity kills. 

Unless you reach a certain age, it has been said. When it comes to seniors, research has reported an "obesity paradox" concluding that, at age 65 and older, having an elevated BMI won't shorten your lifespan, and may even extend it. A new study took another look at the numbers, finding the earlier research flawed. The paradox was a mirage: As obese Americans grow older, in fact, their risk of death climbs.

Most mammals, including humans, see in stereo and hear in stereo but the idea that mammals can also smell in stereo has been suspect.

A new study has found that the common mole (Scalopus aquaticus) relies on stereo sniffing to locate its prey. So there is at least one mammal that can, the researcher concludes.

How, when and where a pathogen is transmitted between two individuals in a population is crucial in understanding and predicting how a disease will spread and a new model seeks to lay the foundation for new zoonotic disease spread thinking

By outlining a predictive model of a spatial epidemic spread in a population of territorial animals and quantifying the instances of transmission events, the research team determined the propagation speed of a pathogen using parameters based on the knowledge of the demography of a species, the way animals wander and the degree of contagiousness of the disease.

People lose muscle mass, and find it harder to maintain, as they age, and so researchers have ben investigating ways to delay or counteract age-related muscle loss.

A study conducted by the Exercise Metabolism Research Group at McMaster University suggests that current guidelines for meat consumption are based on the protein needed to prevent deficiency without consideration for preservation of muscle mass, particularly for older individuals who are looking to maintain their muscle as they age. 

President Obama has awarded 12 researchers the National Medal of Science. 11 inventors also received the National Medal of Technology and Innovation. Those are the highest government honors bestowed upon scientists, engineers and inventors.

This year's event marks the 50th presentation of the National Medals of Science, first awarded in 1963 by President John F. Kennedy.   The recipients received their awards at a White House ceremony.