ScienceDaily: Top Science News |
- Discovery of hair-cell roots suggests the brain modulates sound sensitivity
- Genetic manipulation boosts growth of brain cells linked to learning, enhances effects of antidepressants
- Insects have 'personalities' too, research on novelty-seeking honey bees indicates
- Iridescent, feathered dinosaur offers fresh evidence that feathers evolved to attract mates
- Powerful tool to measure metabolites in living cells
- Oldest organism with skeleton discovered in Australia
- BP oil spill hurt marshes, but recovery possible, experts say
- Proposed nuclear clock may keep time with the universe
- Scientists detect seismic signals from tornado
- Large solar flares generate geomagnetic storm
- Daya Bay: Discovery of new kind of neutrino transformation
- Scientists ID 2,000 genes in zebra finch brain linked to singing: May teach us about human speech disorders
| Discovery of hair-cell roots suggests the brain modulates sound sensitivity Posted: 08 Mar 2012 02:46 PM PST The hair cells of the inner ear have a previously unknown "root" extension that may allow them to communicate with nerve cells and the brain to regulate sensitivity to sound vibrations and head position, researchers have discovered.  |
| Posted: 08 Mar 2012 02:46 PM PST Investigators have identified a genetic manipulation that increases the development of neurons in the brain during aging and enhances the effect of antidepressant drugs.  |
| Insects have 'personalities' too, research on novelty-seeking honey bees indicates Posted: 08 Mar 2012 11:32 AM PST Thrill-seeking is not limited to humans and other vertebrates, new research suggests. Some honey bees, too, are more likely than others to seek adventure. The brains of these novelty-seeking bees exhibit distinct patterns of gene activity in molecular pathways known to be associated with thrill-seeking in humans, researchers report.  |
| Iridescent, feathered dinosaur offers fresh evidence that feathers evolved to attract mates Posted: 08 Mar 2012 11:31 AM PST Researchers have revealed that the small, feathered dinosaur Microraptor had a glossy iridescent sheen like a modern crow and that its tail was narrow and adorned with a pair of streamer feathers, suggesting feathers originally evolved for display, rather than flight. The new fossil is the earliest record of iridescent color in feathers.  |
| Powerful tool to measure metabolites in living cells Posted: 08 Mar 2012 11:31 AM PST By engineering cells to express a modified RNA called "Spinach," researchers have imaged small-molecule metabolites in living cells and observed how their levels change over time. Metabolites are the products of individual cell metabolism. The ability to measure their rate of production could be used to recognize a cell gone metabolically awry, as in cancer, or identify the drug that can restore the cell's metabolites to normal.  |
| Oldest organism with skeleton discovered in Australia Posted: 08 Mar 2012 09:01 AM PST Paleontologists have discovered the oldest animal with a skeleton. Called Coronacollina acula, the organism is between 560 million and 550 million years old. The finding provides insight into the evolution of life on the planet, why animals go extinct, and how organisms respond to environmental changes. The discovery also can help scientists recognize life elsewhere in the universe. Coronacollina acula has a number of hard parts -- structural supports -- essentially holding it up.  |
| BP oil spill hurt marshes, but recovery possible, experts say Posted: 08 Mar 2012 07:16 AM PST A new study shows that arthropods living in coastal salt marshes affected by BP oil spill were damaged but they were able to recover if their host plants remained healthy.  |
| Proposed nuclear clock may keep time with the universe Posted: 08 Mar 2012 07:13 AM PST A proposed new time-keeping system tied to the orbiting of a neutron around an atomic nucleus could have such unprecedented accuracy that it neither gains nor loses 1/20th of a second in 14 billion years -- the age of the universe.  |
| Scientists detect seismic signals from tornado Posted: 08 Mar 2012 07:13 AM PST A geophysical experiment detected unusual seismic signals associated with tornadoes that recently struck regions across the Midwest -- information that may have value for meteorologists studying the atmospheric activity that precedes tornado disasters.  |
| Large solar flares generate geomagnetic storm Posted: 08 Mar 2012 07:07 AM PST A pair of unusually large solar flares early March 7, 2012 generated a Coronal Mass Ejection that was expected to reach Earth around mid-day March 8. It will likely cause at least a strong geomagnetic storm that could affect satellites in space and trigger auroral displays. The effects at ground level are expected to be limited, but there is a good chance for some excellent auroral displays in the north.  |
| Daya Bay: Discovery of new kind of neutrino transformation Posted: 08 Mar 2012 04:10 AM PST The Daya Bay Reactor Neutrino Experiment collaboration has announced a precise measurement of the last of the unsolved neutrino "mixing angles," which determine how neutrinos oscillate among different types. The ground-breaking collaboration is the most sensitive reactor neutrino experiment in the world. The results promise new insight into why enough ordinary matter survived after the big bang to form everything visible in the universe.  |
| Posted: 07 Mar 2012 06:46 AM PST The song of a small bird is providing valuable insights into human speech and speech disorders. Scientists have now discovered that some 2,000 genes in a brain region of a male bird called the zebra finch are significantly linked to singing. More than 1,500 of these genes in a critical part of the bird's song circuitry are reported for the first time.  |
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