PASADENA, Calif. — NASA research indicates hunks of frozen carbon dioxide — dry ice — may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.
Researchers deduced this process could explain one enigmatic class of gullies seen on Martian sand dunes by examining images from NASA’s Mars Reconnaissance Orbiter (MRO) and performing experiments on sand dunes in Utah and California. (more…)
Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few, the origin of the most dramatic and pervasive biodiversity on Earth has never been clear.
New research sheds light on how that pattern came about. Furthermore, it confirms that the tropics have been and continue to be the Earth’s engine of biodiversity. (more…)
Brown University scientists have found that a species of bat uses blood flow to reshape its tongue while feeding. The quick dynamic action makes the tongue an effective “mop” for nectar and could even inspire new industrial designs. Findings are reported in the Proceedings of the National Academy of Sciences.(more…)
Using Facebook too much can lead to cheating, breakup and divorce
COLUMBIA, Mo. — Facebook and other social networking web sites have revolutionized the way people create and maintain relationships. However, new research shows that Facebook use could actually be damaging to users’ romantic relationships. Russell Clayton, a doctoral student in the University of Missouri School of Journalism, found that individuals who use Facebook excessively are far more likely to experience Facebook–related conflict with their romantic partners, which then may cause negative relationship outcomes including emotional and physical cheating, breakup and divorce.(more…)
Study Points to Need for Interventions That Address Neighborhood Poverty
COLUMBUS, Ohio – Living in a poor neighborhood as an adolescent is linked to an increased risk of getting the sexually transmitted infection (STI) chlamydia in young adulthood, according to new research.
Ohio State University researchers analyzed data from a large national study that tracked youths over time. The analysis suggested that children who lived in poor neighborhoods during their teenage years had an almost 25 percent greater risk of having chlamydia in their early 20s – even if they themselves weren’t poor – than did teenagers living in wealthier settings. (more…)
Microsoft study shows 94 percent of small and midsize companies gain security advantages — contradicting perceptions that hold others back from adoption.
REDMOND, Wash. — June 11, 2013 — A study released today reveals that, in addition to time and cost savings, small and midsize businesses (SMBs) in the U.S. that use a cloud service gain significant security, privacy and reliability advantages compared with companies that have not adopted the cloud. The study, commissioned by Microsoft Corp., shows that perceptions of the cloud held by nonusers directly contrast with the real experiences of cloud adopters.(more…)
Butterflies are extremely sensitive to changes in temperature and new research has revealed that when summer weather turns bad the silver-spotted skipper battles for survival.
The butterfly, which previously faced extinction from habitat loss, is recovering following conservation efforts but the recent cool wet summers in England have almost stalled its progress.
A 27 year study by researchers at the University of Exeter in collaboration with the University of York, the University of Liverpool, Sussex Wildlife Trust, the Centre for Ecology & Hydrology and the charity Butterfly Conservation has been published in the journal Ecology Letters. The study estimated changes in temperature across a range of silver-spotted skipper habitats and found that localised fluctuations in temperature lead to extreme fluctuations in the butterfly population size and in the probability of the butterflies colonising new sites. (more…)
A new global assessment helps scientists explain why genetically modified crops have suppressed some pests for longer than a decade, while others adapted in a few years.
Since 1996, farmers worldwide have planted more than 1 billion acres (400 million hectares) of genetically modified corn and cotton that produce insecticidal proteins from the bacterium Bacillus thuringiensis, or Bt for short.
Bt proteins, used for decades in sprays by organic farmers, kill some devastating pests but are considered environmentally friendly and harmless to people. However, some scientists feared that widespread use of these proteins in genetically modified crops would spur rapid evolution of resistance in pests. (more…)
