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Software behaving badly: Machine learning could resolve issues raised by multi-core processors

March 12, 2010 - 4:47pm

What computers have gained in speed with the introduction of multicore processors that split up workloads they may be losing in reliability. This is because software applications are written to execute different actions in a specific order. When different pieces of code are processed out of order (thanks to multi-processors' division of labor), it may cause computers to crash, leaving office workers, researchers, students, gamers and other users staring at a frozen screen. [More]

6 Fun Facts about the James Webb Space Telescope [Slide Show]

March 12, 2010 - 3:30pm

The Hubble Space Telescope is an iconic observatory, a triumph of space science that may be the most famous unmanned spacecraft since Sputnik. Hubble's renown is certainly well-deserved, but the spacecraft is aging--it will mark its 20th anniversary of reaching orbit in April. Hubble's services are still in tremendous demand, because it operates above the bulk of Earth's obfuscating atmosphere and so offers astronomers their clearest view of the distant universe. In 2014, when another large, space-borne observatory is set to be launched, the overworked Hubble should finally have some company. [More]

Mine Injuries Rise Right after Daylight Saving Time

March 12, 2010 - 1:30pm

Don’t forget to move your clocks forward this weekend. And then don’t forget to be more careful in the days after you adjust your clocks. Because a recent study found that the hour of lost sleep was related to increased job-related injuries. Probably because sleepy workers were less alert. The work appeared last September in the Journal of Applied Psychology . [ see http://bit.ly/coie2b ] [More]

Consciousness-Raising: Kick-Starting the Brain's Dopamine System May Revive Some Vegetative Patients

March 12, 2010 - 1:23pm

A drug targeting dopamine receptors might be able to "kick-start" an injured brain, enabling certain kinds of vegetative and minimally conscious patients to recover faster. [More]

Bluefin fishing ban to be proposed

March 12, 2010 - 12:30pm
A complete ban of the international commercial trade in bluefin tuna is to be proposed at an upcoming world conservation conference

Gene Target Beats Oil Remedy

March 12, 2010 - 9:00am

The 1992 tearjerker Lorenzo’s Oil told the true story of one family’s struggle to save their son from X-linked adrenoleukodystrophy (ALD), a deadly degenerative brain disease. Unfortunately, over the ensuing years, the oil of the film’s title, a dietary supplement, has not panned out as the cure many people hoped it would be. Now a paper in the November 2009 issue of Science suggests that the long-sought cure may come from gene therapy--a famously hyped approach to treatment that tragically caused the death of a teenage experimental subject in 1999.

Since then, however, researchers have continued to cautiously pursue gene therapy for certain disorders with known genetic origins. ALD, for instance, is caused by mutations in a gene called ABCD1, leading to unusually high levels of a type of fatty acid that damages the material insulating some neurons. It affects about one in 20,000 six- to eight-year-old boys, leading to death before adolescence. The main treatment is still bone marrow transplantation: a risky procedure that relies on finding a suitable donor, explains Patrick Aubourg, a neurologist at France’s INSERM research institute.

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MIND Reviews: The Other Brain

March 12, 2010 - 9:00am

The Other Brain: From Dementia to Schizophrenia, How New Discoveries about the Brain Are Revolutionizing Medicine and Science by R. Douglas Fields. [More]

Readers Respond on "A Path to Sustainable Energy by 2030"

March 12, 2010 - 8:00am

Winds of Change I found it surprising that in “ A Path to Sustainable Energy by 2030 ,” Mark Z. Jacobson and Mark A. Delucchi do not mention the effects of the suggested energy sources on climate. The authors propose to absorb about six terawatts of energy from about 60 terawatts available in the wind, or about 10 percent of its total energy. Because the winds, at least near the U.S., usually flow around highs or lows, where the speed and related Coriolis force tend to maintain the pressure difference, I can easily envision that absorbing the energy will change the rate at which the pressure centers collapse. How this would change the weather, I do not know, but it must make a change to give us some of the energy. Possibly, the weather change would be an improvement, but as a believer in Murphy’s Law, I would be surprised. About 100 years ago dumping garbage into the ocean was justified because the oceans were infinite compared to the effect, so no one calculated how much was allowable. Let’s be smarter this time! Why not do the calculations before we cause more problems? [More]

Condoms for the World Cup and other ways to keep HIV at bay

March 12, 2010 - 7:15am

MIAMI--In three months hundreds of thousands of soccer fans are expected to descend on nine South African cities for the 2010 World Cup. But for so many visitors going to a country where more than 10 percent of the population is estimated to have HIV/AIDS, many public health experts are worried that the event will kick off a spike in transmission. South Africa, in turn, has responded by requesting one billion condoms for the year (many of which will be supplied by the U.K.)--more than twice as many as usual, the BBC noted . [More]

3D TV hits homes

March 11, 2010 - 7:30pm
Consumers can now bring the 3D experience into their homes, but programming is limited, and the prices can be high.

Sushi chef, restaurant charged with serving whale

March 11, 2010 - 2:05pm

WASHINGTON (Reuters) - A California sushi chef and the restaurant in which he worked have been charged with illegally serving meat from an endangered Sei whale, the Justice Department said on Thursday.

Kiyoshiro Yamamoto, 45, and the parent company of the popular restaurant The Hump in Santa Monica were charged late on Wednesday with violating the Marine Mammal Protection Act which makes it illegal to sell any kind of whale meat.

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Researchers Gain New Insights into the Mystery of Thalidomide-Caused Birth Defects

March 11, 2010 - 2:00pm

Half a century ago, thousands of pregnant women in 46 countries took a drug for morning sickness that would later be discovered to cause severe malformations in developing fetuses. Worldwide, roughly 10,000 affected children nicknamed "thalidomide babies" were born with multiple defects, including the characteristic shortened upper limbs (a condition known as phocomelia, Greek for "seal limbs"), before the drug was discontinued in 1961 after four years on the market.

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A New Spin on Conductivity: Electric Signals Can Propagate through an Insulator

March 11, 2010 - 1:20pm

An electric insulator, in the simplest terms, blocks the flow of electric current. So it would be a bit counterintuitive, to say the least, if a current on one side of an insulator could produce voltage on the other. [More]

Floor Plan: Linoleum May Be Green, but Is There an Ecofriendly Way to Keep It Clean?

March 11, 2010 - 1:00pm

Dear EarthTalk: I have a new linoleum floor, which I chose partly for its ecofriendliness. How do I clean and maintain it without using harsh or toxic chemicals? --A. J. Maimbourg, via e-mail

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Arranged Marriages Can Be Real Love Connection

March 11, 2010 - 10:30am

Think arranged marriages are loveless? Not so, says psychologist Robert Epstein, a contributing editor for Scientific American MIND magazine. He spoke March 10 at the 92nd Street Y’s Tribeca site in New York City:

“And there’s even a study published in India [Usha Gupta and Pushpa Singh of the University of Rajasthan, 1982] but using an American love scale, called the Rubin Love Scale, that compared love in love marriages in India, because they have those, too, to love in arranged marriages. And in this particular study, love in the love marriages starts out very high. And then over time it decreases. That’s what all of our studies show. And in the arranged marriages--and this is true in my work, too--we see the love starting out relatively low. Because in some cases the people barely know each other, sometimes they’ve had a half an hour of contact in total before they got married. And then it increases gradually, surpasses the love in the love marriages at about five years. And 10 years out it’s twice as strong.”

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New Hope for Battling Brain Cancer (preview)

March 11, 2010 - 9:00am

In May 2006 Dwayne Berg woke up on a gurney in a Seattle emergency room, an IV in his arm and a team of doctors and nurses working him up. The last thing the 42-year-old financial executive could remember was running on a treadmill at his gym, part of his regular fitness regimen. He had suffered a seizure and tumbled off the machine, and although he had not hurt himself in the fall, doctors had asked for an MRI scan of his brain to see if they could find a cause for the seizure.

They did, and the news was not good: the scan showed a large mass in the left frontal lobe that turned out to be a malignant glioma, a brain cancer that is almost invariably fatal. Berg underwent standard treatment: an operation to remove the tumor, followed by chemotherapy and radiation to eradicate any cancer cells that might remain.

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Divining the Right Drug

March 11, 2010 - 9:00am

Imagine suffering from the crushing weight of major depression, then finally getting diagnosed and starting treatment with a drug--only to realize after two months that the medication, despite its unpleasant side effects, is not alleviating your depression. Unfortunately, this experience is far from rare: more than two thirds of patients with depression have no luck with the first medication they are prescribed and must also endure the withdrawal effects that come with discontinuing a drug before trying a new one. Finding the right treatment can prove a lengthy, painful process of trial and error. A new technology, however, may bypass this ordeal by gauging very early in a treatment regimen how well a drug is working based on the patient’s brain waves.

The technology, called quantitative electro­enceph­alography (QEEG), measures a person’s brain-wave pattern with EEG and then compares it with a database of normal samples to detect abnormal function. In a study published in the September 2009 issue of the journal Psychiatry Research , scientists used QEEG to record brain activity in subjects with major depressive disorder before they began treatment, after one week on an antidepressant and after eight weeks on the drug--the period it takes such drugs to achieve full effect. Changes in the QEEG readout after just one week of medication predicted 74 percent of the time whether patients would experience either a recovery or a remission of symptoms by the end of eight weeks.

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Will the Clean Tech Bubble Burst?

March 11, 2010 - 8:45am

BOSTON--Economic bubbles are now famous, and the collapse of the dot-com business a decade ago made the bursting of bubbles infamous. A panel of experts here at the Going Green East conference yesterday ended up in a lively, entertaining and, at times, contentious debate over whether the growth of so-called clean tech--renewable energy and environmentally friendly technologies--has entered the bubble stage, if that bubble is bursting...or if a bubble has ever existed.

Lucky for anyone reading these words, the conference organizers at Always On videotaped the panel and have already posted it online for viewing. (Use this link then scroll two thirds down the page to the embedded session title "The Cleantech Bubble?".) The first 10 minutes have some of the best fireworks from two pioneers of major technology ramp-ups, including Bob Metcalfe , who invented the Ethernet and drove the vast growth of the Internet, and George Gilder , whose prognostications about hot telecomm technologies and the darling companies behind them greatly pumped up the dot-com bubble. If you listen even longer you'll hear all four panelists ultimately bash subsidies for technology of all kinds, itself worth the price of admission--which in this case, is free.

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Malaria rates drop in the Americas, but travelers still worry

March 11, 2010 - 8:00am

MIAMI--Malaria continues to be a global scourge, sickening some 300 million to 500 million people annually. Most of the resulting one million to three million malaria deaths occur in regions where it is highly endemic, such as sub-Saharan Africa and parts of south Asia.  [More]