Does orange juice taste sweeter if it's a brighter orange? A new study in the March issue of the Journal of Consumer Research finds that the color of a drink can influence how we think it tastes. In fact, the researchers found that color was more of an influence on how taste was perceived than quality or price information.

"Perceptual discrimination is fundamental to rational choice in many product categories yet rarely examined in consumer research," write JoAndrea Hoegg (University of British Columbia) and Joseph W. Alba (University of Florida).

A provocative new model proposed by molecular biologist John Tower of the University of Southern California may help answer an enduring scientific question: Why do women tend to live longer than men?

That tendency holds true in humans and many other mammals as well as in the much-studied fruit fly Drosophila melanogaster.

In genetic studies of Drosophila, Tower and his team have shown that genes known to increase longevity always affect male and female flies differently.

Several neurological and psychiatric disorders, including schizophrenia, alcoholism, and Parkinson’s disease, are associated with changes in the brain that affect the nerves that communicate with each other through the naturally-produced chemical dopamine. One protein that is crucial for dopamine-mediated neuronal communication in animals is DARPP-32. However, very little is known about the function of this protein in humans.

In a study appearing online on February 8 in advance of publication in the March print issue of the Journal of Clinical Investigation, Daniel Weinberger and colleagues from the National Institutes of Health show that the gene that encodes DARPP-32 exhibits genetic variation.

Light has been shed on the dark parts of the Moon with experiments by University of Edinburgh researchers simulating billions of years of lunar evolution.

It is generally believed the Moon was created after an early, semi molten, Earth collided with a planet the size of Mars.

The collision was so great that the orbiting debris would have formed a so-called lunar magma ocean, or liquefied rock, up to several hundred kilometres deep that would have covered the Moon's surface.

Yet until now, it has remained a mystery as to how this magma ocean cooled and how the lunar landscape evolved into white highlands and dark valleys.

This week, for the first time in humans, a heart failure patient received adult stem cells – taken from his own adipose (fat) tissue – which were processed and injected directly into the heart muscle with a special catheter. Francisco Fernandez-Avilés, M.D. performed the procedure in Madrid. The Texas Heart Institute at St. Luke’s Episcopal Hospital is leading the collaborative clinical trial which will involve 30 patients.

The trial site for the study is Hospital General Universitario Gregorio Marañón in Madrid, Spain. Dr. Fernandez-Avilés, Professor of Cardiovascular Medicine and Chief of Cardiology Service at Gregorio Marañón and Dr.

Researchers at the University of Illinois at Urbana-Champaign have developed a novel computational image-forming technique for optical microscopy that can produce crisp, three-dimensional images from blurry, out-of-focus data.

Called Interferometric Synthetic Aperture Microscopy, ISAM can do for optical microscopy what magnetic resonance imaging did for nuclear magnetic resonance, and what computed tomography did for X-ray imaging, the scientists say.