Latest Science News -- ScienceDaily
Tiny bacterium provides window into whole ecosystems
Tue, 28 Mar 2017 14:53:39 EDT
Research on Prochlorococcus, the most abundant life form in the oceans, shows the bacteria's metabolism evolved in a way that may have helped trigger the rise of other organisms, to form a more complex marine ecosystem with overall greater biomass.
Elevating women's status lowers dependence on solid fuels
Tue, 28 Mar 2017 14:53:34 EDT
A new research paper finds that in countries where gender inequalities are most pronounced, women are much more likely to be exposed to solid fuel -- including burning from wood, crop wastes, charcoal, and dung -- and its negative consequences.
Elevated blood pressure not a high mortality risk for elderly with weak grip
Tue, 28 Mar 2017 14:53:31 EDT
A study of nearly 7,500 Americans age 65 or older suggests that elevated blood pressure is not related to high mortality risk among people in that age group with weak grip strength.
Fairy circles of Namibia: New research helps scientists gain insight
Tue, 28 Mar 2017 14:53:29 EDT
New insights have been gained into one of nature's great mysteries: the fairy circles of Namibia. Numbering in the millions, the so-called fairy circles are in the eastern, interior margin of the coastal Namib Desert, stretching from southern Angola to northern South Africa. They range in size from about 12 feet to about 114 feet, consisting of bare patches of soil surrounded by rings of grass. The origins of the circles have long been debated by researchers.
Sun: Igniting a solar flare in the corona with lower-atmosphere kindling
Tue, 28 Mar 2017 14:53:26 EDT
Recent images have revealed the emergence of small-scale magnetic fields in the lower reaches of the corona researchers say may be linked to the onset of a main flare.
How a young-looking lunar volcano hides its true age
Tue, 28 Mar 2017 14:53:23 EDT
A young-looking volcanic caldera on the Moon has been interpreted by some as evidence of relatively recent lunar volcanic activity, but new research suggests it's not so young after all.
Alcohol use in veterans with schizophrenia less common than thought; no level safe
Tue, 28 Mar 2017 14:53:20 EDT
US veterans who are being treated for schizophrenia are much less likely to drink any alcohol than the general population. But when they do misuse alcohol, it leads to worsening of their symptoms.
New method to 'fingerprint' HIV developed
Tue, 28 Mar 2017 14:53:17 EDT
A method to analyze the glycan shield on HIV's protective outer glycoprotein has been developed as a potential HIV vaccine candidate, report scientists.
Fighting world hunger: Robotics aid in the study of corn and drought tolerance
Tue, 28 Mar 2017 14:53:10 EDT
Developing drought tolerant corn that makes efficient use of available water will be vital to sustain the estimated 9 billion global population by 2050. In March 2014, the National Science Foundation (NSF) awarded the University of Missouri a $20 million grant as part of a multi-institutional consortium to study how corn maintains root growth during drought conditions. Using funding from the NSF, engineers on a multidisciplinary team have developed a robotic system that is changing the way scientists study crops and plant composition.
Evolving 'lovesick' organisms found survival in sex
Tue, 28 Mar 2017 14:53:08 EDT
Being 'lovesick' takes on a whole new meaning in a new theory which answers the unsolved fundamental question: why do we have sex£
Potential drugs and targets for brain repair
Tue, 28 Mar 2017 14:53:05 EDT
Researchers have discovered drugs that activate signaling pathways leading to specific adult brain cell types from stem cells in the mouse brain, according to a new study. The results may open new avenues for drug development aimed at treatment of degenerative brain disorders.
Unraveling the functional diversity of longevity gene SIRT1
Tue, 28 Mar 2017 14:53:03 EDT
While the search for elixir of life has captivated human imagination for millennia, researchers around the world have put in efforts to extend healthy lifespan and reduce the burden of morbid diseases in an increasingly aging population. Researchers have now identified a control mechanism within a longevity gene, which is key to unraveling its functional diversity and is likely to boost efforts at designing specific pharmacological agents.
Lead exposure in childhood linked to lower IQ, lower status jobs, as adults
Tue, 28 Mar 2017 14:53:00 EDT
A long-term study of 565 children who grew up in the era of leaded gasoline has shown that their exposure to the powerful neurotoxin may have led to a loss of intelligence and occupational standing by the time they reached age 38. Ninety-four percent of the children exceeded today's reference value of 5 micrograms of lead per deciliter of blood. For each 5-microgram increase in blood lead, a person lost about 1.5 IQ points.
Marathon running may cause short-term kidney injury
Tue, 28 Mar 2017 14:52:57 EDT
The physical stress of running a marathon can cause short-term kidney injury, according to new research. Although kidneys of the examined runners fully recovered within two days post-marathon, the study raises questions concerning potential long-term impacts of this strenuous activity at a time when marathons are increasing in popularity.
How bacteria hunt other bacteria
Tue, 28 Mar 2017 14:52:55 EDT
A bacterial species that hunts other bacteria has attracted interest as a potential antibiotic, but exactly how this predator tracks down its prey has not been clear. A new study reveals that the bacterial predator Bdellovibrio bacteriovorus homes in on its target by taking advantage of fluid forces generated by its own swimming movements and those of its prey. These bring the bacteria in close proximity, giving BV a greater chance of successful attack.
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