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NASA

+ - Amazon Forest Unexpectedly Resistant to Drought->

Submitted by
koalapeck
koalapeck writes "NASA's earth observatory has an interesting article on the role drought plays in the Amazon Rain Forest.

"The extensive forests of South America's Amazon are turning out to be tougher than expected when it comes to withstanding the onslaughts of a changing climate. A team of U.S. and Brazilian scientists using the insightful eyes of two NASA satellites has shown that one of the worst droughts in decades could not stop the undisturbed regions of the Amazon forest from "greening up.""

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Announcements

+ - Breaking: Grand Theft Auto IV Delayed->

Submitted by
njkid1
njkid1 writes "Were you expecting to play GTA IV this holiday? Well, you're just going to have to wait. Take-Two and Rockstar have just moved the title into next year, leaving Halo 3 to potentially dominate even more this holiday season. Take-Two has reduced its guidance for the year as well."
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Power

+ - Turn The Deserts Green by Killing Desal Costs->

Submitted by
cakilmer
cakilmer writes "I visited the Annual American Membrane Technology Association meeting in Las Vegas last week. These membranes support water desalination. 15 or 20 new plants are in planning stage to be built along coastal California. But there's no new water sources for the southwest. People are still streaming in and the big Hoover dam is half full and falling. What to do? The answer is to invest the money to collapse the cost of water desalination and transport so water in the western deserts is as cheap as water on the East Coast. Is this doable? You bet."
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Education

+ - Marijuana raises psychosis risk?->

Submitted by Pockets
Pockets (666) writes "(LONDON) — Using marijuana seems to increase the chance of becoming psychotic, researchers report in an analysis of past research that reignites the issue of whether pot is dangerous. The new review suggests that even infrequent use could raise the small but real risk of this serious mental illness by 40 percent.

Doctors have long suspected a connection and say the latest findings underline the need to highlight marijuana's long-term risks. The research, paid for by the British Health Department, is being published Friday in medical journal The Lancet.

"The available evidence now suggests that cannabis is not as harmless as many people think," said Dr. Stanley Zammit, one of the study's authors and a lecturer in the department of psychological medicine at Cardiff University.

The researchers said they couldn't prove that marijuana use itself increases the risk of psychosis, a category of several disorders with schizophrenia being the most commonly known.

There could be something else about marijuana users, "like their tendency to use other drugs or certain personality traits, that could be causing the psychoses," Zammit said.

Marijuana is the most frequently used illegal substance in many countries, including the United Kingdom and the United States. About 20 percent of young adults report using it at least once a week, according to government statistics.

Zammit and colleagues from the University of Bristol, Imperial College and Cambridge University examined 35 studies that tracked tens of thousands of people for periods ranging from one year to 27 years to examine the effect of marijuana on mental health.

They looked for psychotic illnesses as well as cognitive disorders including delusions and hallucinations, bipolar disorder, depression, anxiety, neuroses and suicidal tendencies.

They found that people who used marijuana had roughly a 40 percent higher chance of developing a psychotic disorder later in life. The overall risk remains very low.

For example, Zammit said the risk of developing schizophrenia for most people is less than 1 percent. The prevalence of schizophrenia is believed to be about five in 1,000 people. But because of the drug's wide popularity, the researchers estimate that about 800 new cases of psychosis could be prevented by reducing marijuana use.

The scientists found a more disturbing outlook for "heavy users" of pot, those who used it daily or weekly: Their risk for psychosis jumped to a range of 50 percent to 200 percent.

One doctor noted that people with a history of mental illness in their families could be at higher risk. For them, marijuana use "could unmask the underlying schizophrenia," said Dr. Deepak Cyril D'Souza, an associate professor of psychiatry at Yale University, who was not involved in the study.

Dr. Wilson Compton, a senior scientist at the National Institute on Drug Abuse in Washington, called the study persuasive.

"The strongest case is that there are consistencies across all of the studies," and that the link was seen only with psychoses — not anxiety, depression or other mental health problems, he said.

Scientists cannot rule out that pre-existing conditions could have led to both marijuana use and later psychoses, he added.

Scientists think it is biologically possible that marijuana could cause psychoses because it interrupts important neurotransmitters such as dopamine. That can interfere with the brain's communication systems.

In the U.K., the government will soon reconsider how marijuana should be classified in its hierarchy of drugs. In 2004, it was downgraded and penalties for possession were reduced. Many expect marijuana will be bumped up to a class "B" category, with offenses likely to lead to arrests or longer jail sentences.

__

Medical Writer Marilynn Marchione in Milwaukee, Wis., contributed to this report.

http://www.time.com/time/health/article/0,8599,164 7630,00.html"

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The Matrix

+ - 12 satellites working for high charge electrons->

Submitted by
An anonymous reader writes "A rare, timely conjunction of ground-based instrumentation and a dozen satellites has helped scientists better understand how electrons in space can turn into 'killers'. ESA's Cluster constellation has contributed crucially to the finding. 'Killer' electrons are highly energetic, negatively charged particles found in near-Earth space. They can critically, and even permanently, damage satellites in orbit, including telecommunication satellites, and pose a hazard to astronauts. The funny news from the scientists at the ESA can be found HERE"
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Biotech

+ - Cat Predicts Death with Alarming Accuracy

Submitted by bagsc
bagsc (254194) writes "Oscar the Cat is not your typical friendly feline. When people are really ill at his nursing home, he curls up next to them until they die. In fact, according to a recent article published in the New England Journal of Medicine, he has predicted the deaths of 25 patients, and is almost never wrong. Many news sites have reported this. Compassionate furry companion to the ill, or stealer of souls? You decide."

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