Sabtu, 05 Februari 2011

ScienceDaily Top Science Headlines

for Saturday, February 5, 2011

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New images show cloud exploding from Sun ripples like clouds on Earth (February 4, 2011) -- Physicists studying new images of clouds of material exploding from the Sun have spotted instabilities forming in that exploding cloud that are similar to those seen in clouds in Earth's atmosphere. ... > full story

New induced stem cells may unmask cancer at earliest stage (February 4, 2011) -- By coaxing healthy and diseased human bone marrow to become embryonic-like stem cells, a team of scientists has laid the groundwork for observing the onset of the blood cancer leukemia in the laboratory dish. ... > full story

Mechanism involved in breast cancer's spread to bone discovered (February 4, 2011) -- In a discovery that may lead to a new treatment for breast cancer that has spread to the bone, researchers have unraveled a mystery about how these tumors take root. ... > full story

Cross-species strategy might be a powerful tool for studying human disease (February 4, 2011) -- A new study takes advantage of genetic similarities between mammals and fruit flies by coupling a complex genetic screening technique in humans with functional validation of the results in flies. The new strategy has the potential to be an effective approach for unraveling genetically complex human disorders and providing valuable insights into human disease. ... > full story

New wave: Efficient source of terahertz radiation developed (February 4, 2011) -- Researchers have developed a laser-based source of terahertz radiation that is unusually efficient and less prone to damage than similar systems. The technology might be useful in applications such as detecting trace gases or imaging weapons in security screening. ... > full story

Working more than 20 hours a week in high school found harmful (February 4, 2011) -- A new shows that among high school students, working more than 20 hours/week during the school year can lead to academic and behavior problems. The researchers used advanced statistical methods to reanalyze longitudinal data collected in the 1980s on 1,800 middle class teens in 10th and 11th grades. The researchers also found that things didn't get better when teens who were working more than 20 hours/week cut back their hours or stopped working altogether. ... > full story

Part of New Zealand's submerged 'Pink Terraces' found (February 4, 2011) -- Scientists have located portions of the long-lost Pink Terraces near New Zealand. They were called the Eighth Wonder of the World. Until the late 19th century, New Zealand's Pink and White Terraces along Lake Rotomahana on the North Island, attracted tourists from around the world, interested in seeing the beautiful natural formations created by a large geothermal system. But the eruption of Mt. Tarawera on June 10, 1886, buried the terraces in sediment and caused the lake basin to enlarge, engulfing the land where the terraces stood. For more than a century, people have speculated whether any part of the Pink and White Terraces survived the eruption. ... > full story

Boosting body's immune response may hold key to HIV cure (February 4, 2011) -- Scientists have successfully cleared a HIV-like infection from mice by boosting the function of cells vital to the immune response. Researchers showed that a cell signaling hormone called interleukin-7 reinvigorates the immune response to chronic viral infection, allowing the host to completely clear virus. ... > full story

Quantum quirk: Scientists pack atoms together to prevent collisions in atomic clock (February 4, 2011) -- In a paradox typical of the quantum world, scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The surprising discovery can boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped by intersecting laser beams. ... > full story

For stem cells, a way to assure quality (February 4, 2011) -- Ever since researchers devised a recipe for turning adult cells into cells that look and act like embryonic stem cells, there has been lingering doubt in the field about just how close to embryonic stem cells each of those cell lines really is at a molecular and functional level. Now, researchers have developed a systematic way to lay those doubts about quality to rest. ... > full story

Oil in Gulf of Mexico: Biologists cite need for critical data to determine ecological consequences (February 4, 2011) -- Twenty years after biologists attempted to determine the ecological damages to marine life from the Exxon Valdez oil spill, scientists dealing with the BP disaster find themselves with the same problem: the lack of critical data to determine the ecological consequences of human-induced environmental disasters. ... > full story

Early childhood education program yields high economic returns (February 4, 2011) -- For every invested in a Chicago early childhood education program, nearly is projected to return to society over the children's lifetimes -- equivalent to an 18 percent annual return on program investment, according to a new study. ... > full story

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