823,565 articles

A quantum leap in computing

When American physicist Richard Feynman in 1982 proposed creating a quantum computer that could solve complex problems, the idea was merely a theory scientists believed was far off in the future.

Antiestrogen therapy may decrease risk for melanoma

(Medical Xpress) -- Women with breast cancer who take antiestrogen supplements may be decreasing their risk for melanoma, according to a study published in Cancer Prevention Research, a journal of the American Association for Cancer Research.

Close encounters: When Daniel123 met Jane234 (w/ video)

(PhysOrg.com) -- Qbo robots created a stir recently when their developers succeeded in demonstrating that a Qbo can be trained to recognize itself in the mirror. Now the developers have taken their explorations into simulated consciousness a step further. A pair of Qbo robots, colored differently but still two Qbo entities, can recognize each other. Just as human earthling Harry met Sally, Qbo...

Exercise cuts bowel cancer risk

Researchers at the University of Western Australia (UWA) and the Western Australian Institute for Medical Research (WAIMR) have found people who engage in vigorous physical activity may be protected against types of colorectal cancer.

Microbe metabolism: For the smallest organisms, size determines how microbes spend energy

Every living organism balances a budget of sorts — by allocating energy to various parts of its body to fuel essential life processes. Throughout its lifetime, an organism may rebalance this budget to spend more energy on certain processes over others. How an organism spends its energy determines, in large part, its ability to survive in the world, and researchers who study...

Promiscuity of resistance plasmid unprecedented

Genetic analysis of an outbreak of drug-resistant infections in one institution shows an unprecedented level of transference of resistance among strains and even species of bacteria. Researchers from the University of Virginia and the Centers for Disease Control and Prevention report their findings in the current issue of the journal mBio.

The case of the missing gas mileage

Contrary to common perception, the major automakers have produced large increases in fuel efficiency through better technology in recent decades. There’s just one catch: All those advances have barely increased the mileage per gallon that autos actually achieve on the road.

The private nuclear rooms of herpesviruses

Researchers from Princeton University have discovered why, despite being bombarded by many different herpesviruses, infected cells produce only a limited number of those viruses. They report their findings in the current issue of the online journal mBio.

The smoky pink core of the Omega Nebula

(PhysOrg.com) -- A new image of the Omega Nebula, captured by ESO's Very Large Telescope (VLT), is one of the sharpest of this object ever taken from the ground. It shows the dusty, rose-coloured central parts of this famous stellar nursery and reveals extraordinary detail in the cosmic landscape of gas clouds, dust and newborn stars.

Climate change models may underestimate extinctions

Predictions of the loss of animal and plant diversity around the world are common under models of future climate change. But a new study shows that because these climate models don't account for species competition and movement, they could grossly underestimate future extinctions.

Experts urge BMI method for calculating weight in kids with eating disorders

An exact determination of expected body weight for adolescents based on age, height and gender is critical for diagnosis and management of eating disorders such as anorexia nervosa and bulimia. However, there are no clear guidelines regarding the appropriate method for calculating this weight in children with such disorders.