ScienceDaily: Top News

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• Frogs, salamanders and climate change
• Attacking MRSA with metals from antibacterial clays
• Now we know why old scizophrenia medicine works on antibiotics-resistant bacteria
• Youth who have their first drink during puberty have higher levels of later drinking
• College women exceed NIAAA drinking guidelines more frequently than college men
• Individuals who drink heavily and smoke may show 'early aging' of the brain
• Reading rock to understand how climate change unfolds
• For combat veterans suffering from post-traumatic stress disorder, 'fear circuitry' in the brain never rests
• Ketamine shows significant therapeutic benefit in people with treatment-resistant depression
• Mars rover Opportunity examines clay clues in rock
• Women's reproductive ability may be related to immune system status
• Invasive species: 'away-field advantage' weaker than ecologists thought

Frogs, salamanders and climate change Posted: 18 May 2013 12:37 PM PDT Increasingly erratic rainfall patterns can lead to declines in southeastern frog and salamander populations, but protecting ponds can improve their plight.

Attacking MRSA with metals from antibacterial clays Posted: 18 May 2013 12:37 PM PDT Medical researchers have come up with a new approach for developing effective, topical antibacterial agents -- one that draws on a naturally occurring substance recognized since antiquity for its medicinal properties: clay.

Now we know why old scizophrenia medicine works on antibiotics-resistant bacteria Posted: 18 May 2013 12:37 PM PDT An old medicine for schizophrenia is effective at treating something completely different than it was designed for: antibiotic-resistant bacteria. So far it has been a mystery how this old schizophrenia medicine works, but now researchers have figured it out. This can lead to a new medicine against the increasingly threatening antibiotic-resistant bacteria.

Youth who have their first drink during puberty have higher levels of later drinking Posted: 18 May 2013 12:37 PM PDT The earlier the age at which youth take their first alcoholic drink, the greater the risk of later alcohol problems.

College women exceed NIAAA drinking guidelines more frequently than college men Posted: 18 May 2013 12:37 PM PDT In 1990, the National Institute on Alcohol Abuse and Alcoholism issued guidelines that define low-risk drinking, which differ for men and women. New research shows that female college student drinkers exceed NIAAA guidelines for weekly drinking more frequently than their male counterparts.

Individuals who drink heavily and smoke may show 'early aging' of the brain Posted: 18 May 2013 12:34 PM PDT Alcohol treatment interventions work best when patients understand and are actively involved in the process. A first-of-its-kind study looks at the interactive effects of smoking status and age on neurocognition in one-month-abstinent alcohol dependent (AD) individuals in treatment. Results show that AD individuals who currently smoke have more problems with memory, ability to think quickly and efficiently, and problem-solving skills than those who do not smoke, effects which seem to become greater with increasing age.

Reading rock to understand how climate change unfolds Posted: 18 May 2013 12:32 PM PDT Geologists reads rock, looking for the natural rules that govern the Earth's climate in the absence of human activity. New work is challenging many assumptions about the ways drastic climate change unfolds – and what to expect next.

For combat veterans suffering from post-traumatic stress disorder, 'fear circuitry' in the brain never rests Posted: 18 May 2013 12:32 PM PDT Chronic trauma can inflict lasting damage to brain regions associated with fear and anxiety. Previous imaging studies of people with post-traumatic stress disorder, or PTSD, have shown that these brain regions can over-or under-react in response to stressful tasks.

Ketamine shows significant therapeutic benefit in people with treatment-resistant depression Posted: 18 May 2013 12:32 PM PDT Drug associated with rapid antidepressant effect in largest clinical trial to-date.

Mars rover Opportunity examines clay clues in rock Posted: 18 May 2013 07:06 AM PDT NASA's senior Mars rover, Opportunity, is driving to a new study area after a dramatic finish to 20 months on "Cape York" with examination of a rock intensely altered by water.

Women's reproductive ability may be related to immune system status Posted: 17 May 2013 12:24 PM PDT Anthropologists have showed that a woman's reproductive function may be tied to her immune system's status.

Invasive species: 'away-field advantage' weaker than ecologists thought Posted: 17 May 2013 12:23 PM PDT For decades, ecologists have assumed the worst invasive species—such as brown tree snakes and kudzu—have an "away-field advantage." They succeed because they do better in their new territories than they do at home. A new study reveals that this fundamental assumption is not nearly as common as people might think.

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