Scientists have identified four Antarctic glaciers that pose a threat to future sea levels using satellite observations, according to a study published in the journal Science.

Sorry for the problems the site experienced tonight; it appears that spammers hammered our search function, causing the site to go down. It has been disabled until we find a suitable solution. After that, an error by a technician at our hosting company caused many errors on the site (which you might have witnessed). We apologize for the downtime; everything should be back to normal right now!

Researchers at the University of California, Santa Cruz, have determined the three-dimensional structure of an RNA enzyme, or "ribozyme," that carries out a fundamental reaction required to make new RNA molecules. Their results provide insight into what may have been the first self-replicating molecule to arise billions of years ago on the evolutionary path toward the emergence of life.

The protein cytochrome c oxidase (CcO) is the ultimate enzyme responsible for all aerobic life on Earth, from bacteria to people. It is also a crucial component of the cellular machinery that generates energy in our body. With such impressive credentials, you might expect that scientists would have a clear understanding of how CcO works. But they don't, according to James P. Collman, professor emeritus of chemistry at Stanford University.

The 2003 severe acute respiratory syndrome (SARS) epidemic in China has lessons to teach hospitals on how to prevent the spread of other respiratory diseases, according to new research appearing in the April 15 issue of Clinical Infectious Diseases, currently available online.

Kaposi’s sarcoma herpesvirus (KSHV) is a human tumor virus and an etiological agent for Kaposi’s sarcoma and primary effusion lymphoma (PEL). PELs are aggressive lymphomas with reported median survival time shorter than six months after diagnosis. Researchers at the University of Helsinki have discovered that activation of the p53 pathway offers a novel effective treatment modality for KSHV-infected lymphomas.

Worldwide, billions of people lack access to a reliable source of safe drinking water and basic sanitation facilities. To address the problem, the United Nations established the Target 10 initiative, which aims to halve the proportion of people without sustainable access to safe drinking water and basic sanitation by 2015.

An international team of American and Chinese paleontologists has discovered a new species of mammal that lived 125 million years ago during the Mesozoic Era, in what is now the Hebei Province in China.

Does God or some other type of transcendent entity answer prayer?

Purdue University chemical engineers have proposed a new environmentally friendly process for producing liquid fuels from plant matter - or biomass - potentially available from agricultural and forest waste, providing all of the fuel needed for "the entire U.S. transportation sector."

This series of pictures, taken by Penn imaging researchers, show an animal lung captured with the new hyperpolarized MRI technique now being studied. A liquid solution containing Carbon-13 was injected into the bloodstream. The MRI picks up the signal as the Carbon-13 moves moves through the lung. Looking at these images provides information about localized blood flow in the lungs. Credit: Courtesy: University of Pennsylvania School of Medicine Researchers at the University of Pennsylvania School of Medicine are harnessing two new, non-invasive techniques to look more closely inside the working lungs - leading to early detection of diseases, like emphysema, before it becomes evident in other modes of imaging.

A team of UBC researchers has re-classified an ancient line of aquatic plants previously thought to be related to grasses and rushes. The discovery clarifies what may be one of the biggest misunderstandings in botanical history.

Using advanced brain imaging techniques, researchers at Georgetown University Medical Center have watched how humans use both lower and higher brain processes to learn novel tasks, an advance they say may help speed up the teaching of new skills as well as offer strategies to retrain people with perceptual deficits due to autism.

Researchers have used a technique to trace the functional disruption in brain circuitry that causes stroke patients to show a lack of awareness or response to the side of the body opposite to the side of the stroke lesion in the brain. The researchers said their findings shed new light on the neurological details of this "spatial neglect." Their findings also demonstrate the value of the magnetic resonance imaging (MRI) technique for studying how disruption in brain circuitry produces behavioral symptoms.