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151,456 articles from ScienceDaily

Personalized Treatment For Depression A Step Closer

New research may result in more effective treatment of depression, paving the way to a personalised approach in the future. Depression, a condition experienced by millions of people round the world. Many drugs exist for the treatment of depression. However, how individuals respond to antidepressant drugs is difficult to judge. A new study shows that magnetic resonance imaging (MRI) can help to...

Preventing Or Reducing Enlarged Heart Decreases Risk Of Heart Failure

For high-blood-pressure patients, preventing or reducing enlarged heart reduces risk of heart failure. An estimated 20 percent of all high-blood-pressure patients, or 12 million Americans, have LVH and are at increased risk of developing heart failure. Previous studies have shown that hypertension doubles the lifetime risk for developing heart failure in men and triples the risk in women,...

Scientists Eye Secrets Of Retinal Regeneration

Peering at microscopic changes within the retina, scientists have discovered a key mechanism driving eye health and eye disease. The team says they have discovered just how light-sensing discs in the retina's rod cells regenerate themselves. The retina uses two cell types—rods and cones—to sense incoming light.

Scientists Use 'Dark Web' To Snag Extremists And Terrorists Online

Terrorists and extremists have set up shop on the Internet, using it to recruit new members, spread propaganda and plan attacks across the world. The size and scope of these dark corners of the Web are vast and disturbing. But in a non-descript building in Tucson, a team of computational scientists are using the cutting-edge technology and novel new approaches to track their moves online,...

Speedier Skis On Course For World Cup Glory

Skis equipped with an ingenious new self-waxing device that enables them to travel quicker could make a dramatic entry onto the skiing scene in the 2008-09 World Cup season. The device continuously applies fresh wax to the bottom of the ski during a race. Its developers are now working with manufacturers, with the aim of incorporating it into skis used in top-class international competition as...

The Sea Ice Is Getting Thinner

Large areas of the Arctic sea ice are only one meter thick this year, equating to an approximate 50 percent thinning as compared to the year 2001. Researchers have also found that the ocean currents and Arctic ecology are changing.

Using Green Chemistry To Deliver Cutting-edge Drugs

Green chemistry is being employed to develop revolutionary drug delivery methods that are more effective and less toxic -- and could benefit millions of patients. Chemists are developing new methods for coating drugs in plastics, using methods that do not damage the latest generation of delicate 'biopharmaceutical' drugs which at the cutting edge of modern medical treatment.

Very Young Children Can Step Into The Minds Of Storybook Characters

A psychology study shows that preschoolers can already perform an impressive feat: getting immersed in the life, thoughts and feelings of a character. The study used an innovative approach to explore children's storytelling ability, focusing on how well they comprehend stories instead of how well they tell them.

Breastfeeding Does Not Protect Against Asthma, Allergies, New Study Shows

Breastfeeding does not protect children against developing asthma or allergies, according to a new study. The results indicate that increased breastfeeding did not reduce the risk of asthma, hayfever or eczema at 6.5 years of age despite large increases in the duration and exclusivity of breastfeeding. It also did not succeed in reducing the prevalence of positive skin prick tests.

New Faraway Sensors Warn Of Emerging Hurricane's Strength

A new study supported by NASA and the US Office of Naval Research takes forecasters one step further to improving their ability to predict just how powerful an oncoming storm may become by using highly-sensitive sensors located thousands of miles from the storm to detect lightning outbreaks within a hurricane's most dangerous area.

New Mechanism Discovered For DNA Recombination And Repair

Scientists have discovered that the RecA family recombinases function as a new type of rotary motor proteins to repair DNA damages. Homologous recombination (HR) is a mechanism that repairs damaged DNA with perfect accuracy, it utilizes the homologous sequence from a partner DNA as a template. This process involves the bringing together of 2 DNA molecules, a search for homologous sequences, and...

'Fetal' Neurons Play Role In Adult Brain

Subplate neurons -- once thought to die after directing the wiring of the cerebral cortex or gray matter -- remain in the white matter of the adult brain in small numbers and maintain activity, communicating with other neurons in the brain said researchers in a recent article.

Call For Closer Examination Of 'Brain Death' As The End Of Life

The medical diagnosis of brain death is at odds with our traditional view of when death actually occurs, says a leading academic speaking at an international conference on death, dying and disposal. Whilst a diagnosis of brain death is made using factors including fixed and dilated pupils, lack of eye movement, absence of respiratory reflexes, the social understanding of death is that it occurs...

China's Eye On The Internet

The "Great Firewall of China," used by the government of the People's Republic of China to block users from reaching content it finds objectionable, is actually a "panopticon" that encourages self-censorship. The researchers are developing an automated tool, called ConceptDoppler, to act as a weather report on changes in Internet censorship in China. ConceptDoppler uses mathematical techniques to...

Mars-Bound Phoenix Returns First Photo From Trip

A camera flying aboard the Phoenix Mars Lander took its first picture during cruise and sent it back to Earth on Sept. 6. The lander's Robotic Arm Camera took the photo looking into the Robotic Arm's scoop. Both instruments are encased in a protection biobarrier, to ensure no Earth organisms are carried to Mars.

Was Ability To Run Early Man's Achilles Heel?

The earliest humans almost certainly walked upright on two legs but may have struggled to run at even half the speed of modern man, new research suggests. They proposes that if early humans lacked an Achilles tendon, as modern chimps and gorillas do, then their ability to run would have been severely compromised.


Customized Virus Kills Brain Tumor Stem Cells That Drive Lethal Cancer

A tailored virus destroys brain tumor stem cells that resist other therapies and cause lethal re-growth of cancer after surgery, a mouse study shows. The virus was tested against the most aggressive brain tumor which originates in the glial cells that surround and support neurons. This type of tumor is highly resistant to radiation and chemotherapy and so invasive that surgery almost never...

How Vitamin C Stops Cancer

Nearly 30 years after Nobel laureate Linus Pauling famously and controversially suggested that vitamin C supplements can prevent cancer, a team of Johns Hopkins scientists have shown that in mice, at least, vitamin C -- and potentially other antioxidants -- can indeed inhibit the growth of some tumors, just not in the manner suggested by years of investigation.

Smallest Piece Of Art Ever Printed Could Herald Ultra-Tiny Nanowires, Biosensors And Optics For Future Chips

IBM researchers in collaboration with scientists from the ETH Zurich have demonstrated a new, efficient and precise technique to "print" at the nanoscale. The method, which allows the scientists to place individual particles precisely where they want them, could advance the development of nanoscale biosensors, ultra-tiny lenses that can bend light inside future optical chips, and the fabrication...

Education Linked To Risk Of Cancer Death

A new American Cancer Society study finds having at least some education beyond high school is strongly associated with a decreased risk of cancer death. For all cancer sites combined, death rates among white and black men with the lowest (0-8 years) level of education were about three times higher than those with the highest (17+ years) level of education.