ScienceDaily: Most Popular News

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• Hubble observes glowing, fiery shells of gas
• 3-D printing using old milk jugs
• Postmenopausal women who smoked are more likely to lose teeth due to periodontal disease
• Reprogramming adult cells to stem cells works better with one gene turned off
• Shark fisheries globally unsustainable: 100 million sharks die every year
• How do bacteria clog medical devices? Very quickly
• New insights into plant evolution
• Facebook 'Likes' a good indicator of quality hospital care
• 'Defective' virus surprisingly plays major role in spread of disease
• Saharan and Asian dust, biological particles end global journey in California
• Mechanisms regulating inflammation associated with type 2 diabetes, cancer identified
• Volcanic aerosols, not pollutants, tamped down recent Earth warming
• Living through a tornado does not shake optimism
• New study reveals how sensitive US East Coast regions may be to ocean acidification
• US may face inevitable nuclear power exit
• A better bone marrow transplant: Preventing graft-versus-host disease
• Tumors deliberately create conditions that inhibit body's best immune response
• Changes in patterns of brain activity predict fear memory formation
• Infection during pregnancy and stress in puberty play key role in development of schizophrenia
• Parkinson's disease: Parkin protects from neuronal cell death
• New chemical probe provides tool to investigate role of malignant brain tumor domains in chromatin structure and regulation
• Pregnancy permanently changes foot size
• Cancer survival: Where you're treated matters
• New study shows cannabis effects on driving skills
• Important control mechanism behind autoimmune diseases discovered
• Turbulence in a crystal
• Order in the chaos of a cell membrane

Hubble observes glowing, fiery shells of gas Posted: 01 Mar 2013 01:10 PM PST A new image from the Hubble Space Telescope may look like something from "The Lord of the Rings," but this fiery swirl is actually a planetary nebula known as ESO 456-67. Set against a backdrop of bright stars, the rust-colored object lies in the constellation of Sagittarius (The Archer), in the southern sky.

3-D printing using old milk jugs Posted: 01 Mar 2013 12:36 PM PST 3-D printing lets anyone make almost anything with a simple machine and a roll of plastic filament. Now researchers have found a way to drive costs down even further by recycling empty milk jugs into filament. The process reduces landfill waste, saves on energy compared with traditional recycling, and makes 3-D printing and even better deal.

Postmenopausal women who smoked are more likely to lose teeth due to periodontal disease Posted: 01 Mar 2013 12:36 PM PST Postmenopausal women who have smoked are at much higher risk of losing their teeth than women who never smoked, according to a new study.

Reprogramming adult cells to stem cells works better with one gene turned off Posted: 01 Mar 2013 12:32 PM PST The removal of a genetic roadblock could improve the efficiency of converting adult cells into stem cells by 10 to 30 times, report scientists.

Shark fisheries globally unsustainable: 100 million sharks die every year Posted: 01 Mar 2013 12:32 PM PST The world's shark populations are experiencing significant declines with perhaps 100 million – or more - sharks being lost every year, according to a new study.

How do bacteria clog medical devices? Very quickly Posted: 01 Mar 2013 10:11 AM PST A new study demonstrates that bacteria can quickly and catastrophically clog medical devices by forming slimy ribbons that tangle and trap other cells.

New insights into plant evolution Posted: 01 Mar 2013 09:33 AM PST New research has uncovered a mechanism that regulates the reproduction of plants, providing a possible tool for engineering higher yielding crops.

Facebook 'Likes' a good indicator of quality hospital care Posted: 01 Mar 2013 09:33 AM PST While those active on social media aren't shy about expressing opinions on their Facebook pages, how much do their "Likes" really reflect the quality of an organization? A new study shows that Facebook "Likes" were indeed an indicator of hospital quality and patient satisfaction.

'Defective' virus surprisingly plays major role in spread of disease Posted: 01 Mar 2013 09:33 AM PST Defective viruses, thought for decades to be essentially garbage unrelated to the transmission of a virus, now appear able to play a much more important role in the spread of disease, biologists show. Life scientists report for the first time a significant link between a defective virus and an increased rate of transmission of a major disease.

Saharan and Asian dust, biological particles end global journey in California Posted: 01 Mar 2013 09:33 AM PST A new study is the first to show that dust and other aerosols from one side of the world influence rainfall in the Sierra Nevada.

Mechanisms regulating inflammation associated with type 2 diabetes, cancer identified Posted: 01 Mar 2013 09:33 AM PST A new study has identified epigenetic mechanisms that connect a variety of diseases associated with inflammation.

Volcanic aerosols, not pollutants, tamped down recent Earth warming Posted: 01 Mar 2013 09:30 AM PST Scientists looking for clues about why Earth did not warm as much as scientists expected between 2000 and 2010 now thinks the culprits are hiding in plain sight -- dozens of volcanoes spewing sulfur dioxide.

Living through a tornado does not shake optimism Posted: 01 Mar 2013 09:30 AM PST Even in the face of a disaster, we remain optimistic about our chances of injury compared to others, according to a new study. Residents of a town struck by a tornado thought their risk of injury from a future tornado was lower than that of peers, both a month and a year after the destructive twister. Such optimism could undermine efforts toward emergency preparedness.

New study reveals how sensitive US East Coast regions may be to ocean acidification Posted: 01 Mar 2013 09:30 AM PST A continental-scale chemical survey in the waters of the eastern US and Gulf of Mexico is helping researchers determine how distinct bodies of water will resist changes in acidity.

US may face inevitable nuclear power exit Posted: 01 Mar 2013 09:29 AM PST In the third and final issue in a series focused on nuclear exits, the Bulletin of the Atomic Scientists, published by SAGE, turns its attention to the United States and looks at whether the country's business-as-usual approach may yet lead to a nuclear phase-out for economic reasons.

A better bone marrow transplant: Preventing graft-versus-host disease Posted: 01 Mar 2013 09:29 AM PST Bone marrow transplant is a key treatment for patients with leukemia, lymphoma, multiple myeloma and other blood disorders.

Tumors deliberately create conditions that inhibit body's best immune response Posted: 01 Mar 2013 09:29 AM PST New research reveals that tumors in melanoma patients deliberately create conditions that knock out the body's 'premier' immune defense and instead attract a weaker immune response unable to kill off the tumor's cancerous cells.

Changes in patterns of brain activity predict fear memory formation Posted: 01 Mar 2013 09:25 AM PST Psychologists have discovered that changes in patterns of brain activity during fearful experiences predict whether a long-term fear memory is formed.

Infection during pregnancy and stress in puberty play key role in development of schizophrenia Posted: 01 Mar 2013 09:25 AM PST The interplay between an infection during pregnancy and stress in puberty plays a key role in the development of schizophrenia, as behaviorists demonstrate in a mouse model. However, there is no need to panic.

Parkinson's disease: Parkin protects from neuronal cell death Posted: 01 Mar 2013 09:25 AM PST Researchers have identified a novel signal transduction pathway, which activates the parkin gene and prevents stress-induced neuronal cell death.

New chemical probe provides tool to investigate role of malignant brain tumor domains in chromatin structure and regulation Posted: 01 Mar 2013 09:23 AM PST Medical researchers have discovered a chemical probe that can be used to investigate the L3MBTL3 methyl-lysine reader domain. The probe, named UNC1215, will provide researchers with a powerful tool to investigate the function of malignant brain tumor (MBT) domain proteins in biology and disease.

Pregnancy permanently changes foot size Posted: 01 Mar 2013 09:23 AM PST A new study of women's feet during and after pregnancy shows that arch height and arch rigidity decrease significantly from early pregnancy to five months after childbirth, causing corresponding increases in foot length that appear to be permanent.

Cancer survival: Where you're treated matters Posted: 01 Mar 2013 09:23 AM PST A study of older patients with advanced head and neck cancers has found that where they were treated significantly influenced their survival. The study found that patients who were treated at hospitals that saw a high number of head and neck cancers were 15 percent less likely to die of their disease as compared to patients who were treated at hospitals that saw a relatively low number of such cancers. The study also found that such patients were 12 percent less likely to die of their disease when treated at a National Cancer Institute -designated cancer center.

New study shows cannabis effects on driving skills Posted: 01 Mar 2013 09:22 AM PST Cannabis is second only to alcohol for causing impaired driving and motor vehicle accidents. In 2009, 12.8% of young adults reported driving under the influence of illicit drugs and in the 2007 National Roadside Survey, more drivers tested positive for drugs than for alcohol. These cannabis smokers had a 10-fold increase in car crash injury compared with infrequent or nonusers after adjustment for blood alcohol concentration.

Important control mechanism behind autoimmune diseases discovered Posted: 01 Mar 2013 05:56 AM PST Researchers have discovered a new control mechanism in our immune system. The discovery is of potential significance to the treatment of serious diseases such as MS (multiple sclerosis), rheumatoid arthritis, and SLE (Systemic lupus erythematosus).

Turbulence in a crystal Posted: 01 Mar 2013 02:16 AM PST When a crystal is hit by an intense ultrashort light pulse, its atomic structure is set in motion. Scientists can now observe how the configuration of electrons and atoms in titanium dioxide, a semiconductor, changes under the impact of an ultraviolet laser pulse, confirming that even subtle changes in the electron distribution caused by the excitation can have a considerable impact on the whole crystal structure.

Order in the chaos of a cell membrane Posted: 01 Mar 2013 02:16 AM PST An explanation has been proposed for the way in which ordered structures arise in cell membranes. Scientists have discovered how complex compounds of sugar and lipids -- known as glycolipids -- order themselves in cell membranes into rafts, namely small, highly organized domains. The arrangement of glycolipids on the surface of plant and animal cell membranes regulates numerous cellular processes. If errors occur in this process, diseases like PNH and BSE can arise.

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