What is hiding in the large disk of gas and dust encircling the 20 million-year-old star Beta Pictoris?  In 1984 Beta Pictoris was the very first star discovered to be surrounded by a bright disk of dust and debris. Since then, Beta Pictoris has been an object of intense scrutiny with Hubble and ground-based telescopes.

Companies are starting to embrace social media as a viable disclosure channel for product recalls, with the goal of limiting and repairing damage to the firms' reputation.

Using a sample of 405 consumer product recalls between 2000 and 2012, researchers found that corporate social media, in general, lessens negative price reactions to product recall announcements. However, as social media evolved from less to more interactive channels, firms have lost complete control over the content appearing on their corporate social media, and the benefits of social media have lessened.

Sometimes, science means staying awake for two days straight.

But losing sleep is a small sacrifice to make, if you want to learn more about tiny bacteria that sicken half a million Americans each year, kill more than 14,000 of them, and rack up $4.8 billion in health care costs.

That's what drove a team of University of Michigan scientists to work around the clock to study the bacterium called Clostridium difficile, or C. difficile, the bane of hospitals and nursing homes. Most patients develop it after taking antibiotics.

Statins, cholesterol-lowering drugs prescribed to prevent heart attacks for the last two decades, are not as effective nor as safe as claimed, according to a review by Dr. David M. Diamond, a psychologist at the University of South Florida, and Dr. Uffe Ravnskov, an independent researcher.

According to Diamond and Ravnskov, statins produce a dramatic reduction in cholesterol levels, but they have "failed to substantially improve cardiovascular outcomes." They further state that the many studies touting the efficacy of statins have not accounted for the adverse side effects of the drugs, but supporters of statins have used what the authors refer to as "statistical deception" to make inflated claims about their effectiveness. 

Electrical impulses play an important role in cells of the human body. For example, neurons use these impulses to transmit information along their branches and the body also uses them to control the contraction of muscles. The impulses are generated when special channel proteins open in the outer envelope of the cells, allowing charged molecules (ions) to enter or exit the cell. These proteins are referred to as ion channels.

Women who understand the risk of over-detection and over-diagnosis associated with mammography screening have lower intentions to have a breast screening test, according to a new study. Over-detection and over-diagnosis refers to the diagnosis and treatment of breast cancer that would not have presented clinically during a woman's lifetime.

Such a diagnosis, and the resulting overtreatment, can harm women physically and emotionally.