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A study just published by a Dartmouth team of scientists in the Proceedings of the National Academy of Sciences (PNAS) advances our understanding of the sources of human exposure to arsenic and focuses attention on the potential for consuming harmful levels of arsenic via rice.

PROVIDENCE, R.I. Brown University -- The fungi of the Candida genus, known to millions of patients worldwide for their ability to cause serious infections, were once all thought to be asexual. Even after scientists discovered that the mating habits of Candida albicans were many and varied, they remained convinced that many of the more infectious ones did not mate. Now with the first report that Candida tropicalis can mate sexually as well, the chastity of the whole genus comes into further doubt.

COLUMBUS, Ohio – Doses of a neurotransmitter might offer a way to boost the effectiveness of anticancer drugs and radiation therapy, according to a new study led by researchers at the Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research Institute.

On August 26, 1976, a time bomb exploded in Yambuku, a remote village in Zaire, (now the Democratic Republic of the Congo). A threadlike virus known as Ebola had emerged, soon earning a grim distinction as one of the most lethal, naturally occurring pathogens on earth, killing up to 90 percent of its victims, and producing a terrifying constellation of symptoms known as hemorrhagic fever.

Children and young people who have chronic health conditions or need operations don't always have access to the high-quality, child-friendly information they need to understand what is happening to them. That is the key finding of a three-year study funded by the National Institute for Health Research Service Delivery and Organisation (NIHR SDO) programme and led by Bangor and Cardiff Universities.

BUFFALO, N .Y. -- Using clever but elegant design, University at Buffalo chemists have synthesized tiny, molecular cages that can be used to capture and purify nanomaterials.

Sculpted from a special kind of molecule called a "bottle-brush molecule," the traps consist of tiny, organic tubes whose interior walls carry a negative charge. This feature enables the tubes to selectively encapsulate only positively charged particles.

MADISON –Two talks at a scientific conference this week will propose a common root for an enormous deluge in western Tennessee in May 2010, and a historic outbreak of tornadoes centered on Alabama in April 2011.

Both events seem to be linked to a relatively rare coupling between the polar and the subtropical jet streams, says Jonathan Martin, a University of Wisconsin-Madison professor of atmospheric and oceanic sciences.

CORAL GABLES, FL (December 5, 2011)--The past decade has seen a dramatic increase in the presence of gays in American advertising. The media has transformed the stigmatized stereotype of gays into a new, socially desirable image of stylish consumers with high-end taste. This marketing strategy affects the way gays understand themselves and influences the meaning of gayness for society in general, explains Wan-Hsiu Sunny Tsai, assistant professor of advertising at the University of Miami School of Communication, in a study recently published by the Journal of Advertising.

Children and young people who have chronic health conditions or need operations don't always have access to the high-quality, child-friendly information they need to understand what is happening to them. That is the key finding of a three-year study funded by the National Institute for Health Research Service Delivery and Organisation (NIHR SDO) programme and led by Bangor and Cardiff Universities.

RIVERSIDE, Calif. – A team of scientists from the University of California, Riverside recently rediscovered the rarest species of bumblebee in the United States, last seen in 1956, living in the White Mountains of south-central New Mexico.

Recent camera trap images from the rocky terrain of Afghanistan's central highlands have revealed a surprise: a Persian leopard, an apex predator long thought to have disappeared from the region, according to the Wildlife Conservation Society.

In a series of images that provides indisputable proof that the big cat persists in the country's interior, a big adult leopard can be seen prowling around the camera trap's field of view and investigating the camera itself, appearing to threaten it with canines exposed.

A new study published in the journal Respirology reveals that dust storms have an adverse effect on emergency hospital admission for chronic lung disease, often known as chronic obstructive pulmonary disease (COPD).

Dust storms in East Asia and Southern China are caused by wind-blown dust that travels long distances from North China. The concentrations of coarse particles—those with a diameter ranging from 2.5 to 10 micrometers—can reach very high levels.

SACRAMENTO, Calif. -- Aspirin taken within five days of cardiac surgery is associated with a significant decrease in the risk of major postoperative complications, including renal failure, a lengthy intensive care unit stay and even early death (30-day mortality), according to a study by researchers at Thomas Jefferson University and UC Davis Medical Center set to appear in the journal Annals of Surgery.

TAMPA, Fla. – In a follow-up study, researchers at Moffitt Cancer Center and colleagues have found that patients who receive chemotherapy for breast cancer might experience prolonged fatigue years after their therapy. The new study, published in the American Cancer Society's current issue of CANCER, is a follow-up to a study on fatigue and chemotherapy and radiotherapy for breast cancer Moffitt researchers published in CANCER in 2007.

A new study published in the CMAJ (Canadian Medical Association Journal) reports that hospital-acquired Clostridium difficile infection increases length of stay in hospital by an average of six days.

C. difficile is the most common cause of infectious diarrhea in hospital, and it is estimated that 10% of patients who become infected in hospital will die.