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WHO WORRIES MEXICO FLU DEATHS COULD MARK PANDEMIC

(AP) -- Mexican authorities said 60 people may have died from a swine flu virus in Mexico, and world health officials worry it could unleash a global flu epidemic. Mexico City closed schools across the metropolis Friday in hopes of containing the outbreak that has sickened more than 900.

GENETIC VARIATIONS MAY GIVE CLUES TO INTRACRANIAL ANEURYSMS

(PhysOrg.com) -- An international study led by University of Cincinnati (UC) researchers has detected two genetic variations that could provide insight into why intracranial aneurysms develop.

RESEARCH: NO EVIDENCE FOR ‘TOO BIG TO FAIL’ POLICIES

The U.S. economy would be better served by letting failing firms file for bankruptcy rather than by bailing them out under presumptive federal policies that deem them to be "too big to fail," according to new research from Penn State's Smeal College of Business.

SPIRIT RESUMES DRIVING WHILE ANALYSIS OF PROBLEM BEHAVIORS CONTINUES

(PhysOrg.com) -- NASA's Mars Exploration Rover Spirit drove on Thursday for the first time since April 8, acting on commands from engineers who are still investigating bouts of amnesia and other unusual behavior exhibited by Spirit in the past two weeks.

SCIENTISTS USE RETROVIRUSES TO UNRAVEL WOOLLY HISTORY OF SHEEP DOMESTICATION

(PhysOrg.com) -- Scientists at the University of Glasgow have unravelled the woolly history of sheep domestication by examining retroviruses preserved in the animal`s DNA.

NEW TARGET FOR MAINTAINING HEALTHY BLOOD PRESSURE DISCOVERED

(PhysOrg.com) -- In trying to understand the role of prostaglandins - a family of fatty compounds key to the cardiovascular system - in blood pressure maintenance, researchers at the University of Pennsylvania School of Medicine and colleagues discovered that mice that lack the receptor for one type of prostaglandin have lower blood pressure and less atherosclerosis than their non-mutant brethren.

SURFACE-ENHANCED RAMAN SCATTERING OF SEMICONDUCTING HYBRID NANOPARTICLES

Surface-enhanced Raman scattering (SERS) spectroscopy has the potential to allow single-molecule detection sensitivity. This capability presents new approaches for studying the biophysical and biomedical properties of complex biologically relevant systems in situ. For this purpose, abundant, nontoxic, and biologically compatible materials must be used as SERS active supports.

MIND OVER MUSCLE: POSITIVE BODY IMAGE MORE EFFECTIVE THAN EXERCISE IN HELPING LOSE WEIGHT, QUIT SMOKING

One in five women between the ages of 18 and 24 are smokers, and most say they keep lighting up for fear of gaining weight. But researchers at Temple University have found that when it comes to quitting, a little bit of dialogue and support can be more effective than an exercise plan in helping women not only keep off the weight, but also stay smoke-free.

EVOLUTION OF HUMAN SEX ROLES MORE COMPLEX THAN DESCRIBED BY UNIVERSAL THEORY

A new study challenges long-standing expectations that men are promiscuous and women tend to be more particular when it comes to choosing a mate. The research, published by Cell Press in the April issue of the journal Trends in Ecology and Evolution, suggests that human mating strategies are not likely to conform to a single universal pattern and provides important insights that may impact future investigations of human mating behaviors.

FINLAND ALLOCATES NEW 4G MOBILE FREQUENCIES

The Finnish government said Friday it has allocated extra frequencies to telecom firms TeliaSonera, Elisa and DNA to run the country's new, faster fourth-generation (4G) mobile network.