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• Evolution of monogamy in humans the result of infanticide risk
• Friendships Reduce Risky Behaviors in Homeless Youth
• Human cells respond in healthy, unhealthy ways to different kinds of happiness
• Researchers double efficiency of novel solar cell
• When fluid dynamics mimic quantum mechanics
• Planetary ‘runaway greenhouse’ more easily triggered than previously thought
• Plant-Based Compound May Inhibit HIV Infection, Research Shows
• Layer of Nanowire “Carpet” Gives Growing Cells a Foothold on Metal Implants

Evolution of monogamy in humans the result of infanticide risk Posted: 30 Jul 2013 05:45 AM PDT The threat of infants being killed by unrelated males is the key driver of monogamy in humans and other primates. The study by academics from UCL, University of Manchester, University of Oxford and University of Auckland, is the first to reveal this evolutionary pathway for the emergence of pair living. The team also found that following the emergence of monogamy males are more likely to care for their offspring. Where fathers care for young, not only can they protect infants from other males, but they can also share the burden of childcare. read more

Friendships Reduce Risky Behaviors in Homeless Youth Posted: 30 Jul 2013 05:32 AM PDT Homeless young women may be at greater risk for sexually transmitted infections (STIs) than homeless young men because of the structure of their social groups and friendships, according to new research from UC San Francisco. The findings underscore how the social networks of homeless youth can be highly influential, affecting their participation in risky and protective behaviors. read more

Human cells respond in healthy, unhealthy ways to different kinds of happiness Posted: 29 Jul 2013 03:51 PM PDT Human bodies recognize at the molecular level that not all happiness is created equal, responding in ways that can help or hinder physical health, according to new research led by Barbara L. Fredrickson, Kenan Distinguished Professor of psychology in the College of Arts and Sciences at the University of North Carolina at Chapel Hill. read more

Researchers double efficiency of novel solar cell Posted: 29 Jul 2013 01:53 PM PDT Nearly doubling the efficiency of a breakthrough photovoltaic cell they created last year, UCLA researchers have developed a two-layer, see-through solar film that could be placed on windows, sunroofs, smartphone displays and other surfaces to harvest energy from the sun.   read more

When fluid dynamics mimic quantum mechanics Posted: 29 Jul 2013 01:45 PM PDT In the early days of quantum physics, in an attempt to explain the wavelike behavior of quantum particles, the French physicist Louis de Broglie proposed what he called a “pilot wave” theory. According to de Broglie, moving particles — such as electrons, or the photons in a beam of light — are borne along on waves of some type, like driftwood on a tide. read more

Planetary ‘runaway greenhouse’ more easily triggered than previously thought Posted: 29 Jul 2013 01:34 PM PDT It might be easier than previously thought for a planet to overheat into the scorchingly uninhabitable “runaway greenhouse” stage, according to new research by astronomers at the University of Washington and the University of Victoria published July 28 in the journal Nature Geoscience. read more

Plant-Based Compound May Inhibit HIV Infection, Research Shows Posted: 29 Jul 2013 11:40 AM PDT A compound found in soybeans may become an effective HIV treatment without the drug resistance issues faced by current therapies, according to new research by George Mason University researchers. It’s in the early stages, but genistein, derived from soybeans and other plants, shows promise in inhibiting the HIV infection, says Yuntao Wu, a professor with the George Mason-based National Center for Biodefense and Infectious Diseases and the Department of Molecular and Microbiology. read more

Layer of Nanowire “Carpet” Gives Growing Cells a Foothold on Metal Implants Posted: 29 Jul 2013 11:32 AM PDT Broken bones and joint replacements may someday heal faster, thanks to an unusual coating for medical implants under development at The Ohio State University. Researchers here have found that bone cells grow and reproduce faster on a textured surface than they do on a smooth one—and they grow best when they can cling to a microscopic shag carpet made of tiny metal oxide wires. read more

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