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New research from the University of New Hampshire shows that the “gateway effect” of marijuana — that teenagers who use marijuana are more likely to move on to harder illicit drugs as young adults — is overblown.
Whether teenagers who smoked pot will use other illicit drugs as young adults has more to do with life [...]

Scientists are reporting new evidence that the fat tissue in those spare tires and lower belly pooches — far from being a dormant storage depot for surplus calories — is an active organ that sends chemical signals to other parts of the body, perhaps increasing the risk of heart attacks, cancer, and other diseases. They [...]

Side-by-side comparisons of organic and conventional strawberry farms and their fruit found the organic farms produced more flavorful and nutritious berries while leaving the soil healthier and more genetically diverse.
“Our findings have global implications and advance what we know about the sustainability benefits of organic farming systems,” said John Reganold, Washington State University Regents professor [...]

A chemical analysis of the bones of ancient Nubians shows that they were regularly consuming tetracycline, most likely in their beer. The finding is the strongest evidence yet that the art of making antibiotics, which officially dates to the discovery of penicillin in 1928, was common practice nearly 2,000 years ago.
The research, led by Emory [...]

Previous research has claimed that the reintroduction of wolves to Yellowstone National Park in 1995 is helping restore quaking aspen in risky areas where wolves prowl. But apparently elk hungry for winter food had a different idea. They did not know they were supposed to be responding to a “landscape of fear.”
According to a study [...]

Health conscious consumers who hesitate at the price of fresh blueberries and blackberries, fruits renowned for high levels of healthful antioxidants, now have an economical alternative, scientists reported at a meeting of the American Chemical Society (ACS). It is black rice, one variety of which got the moniker “Forbidden Rice” in ancient China because nobles [...]

Biologists at the University of California, Riverside have found that voluntary activity, such as daily exercise, is a highly heritable trait that can be passed down genetically to successive generations.
Working on mice in the lab, they found that activity level can be enhanced with “selective breeding” — the process of breeding plants and animals for [...]

The terrorist attacks of September 11, 2001 have been called the defining moment of our time. Thousands of people died and the attacks had huge individual and collective consequences, including two wars. But less is known about the immediate emotional reactions to the attacks. For a new study published in Psychological Science, a journal of [...]

China’s monopoly on the global supply of elements critical for production of computer hard disc drives, hybrid-electric cars, military weapons, and other key products — and its increasingly strict limits on exports — is setting the stage for a crisis in the United States. That’s the topic of the cover story of Chemical & Engineering [...]

A team of researchers led by Dr. Hernán Makse, professor of physics at The City College of New York (CCNY), has shed new light on the way that information and infectious diseases proliferate across complex networks. Writing in Nature Physics, they report that, contrary to conventional wisdom, persons with the most connections are not necessarily [...]

By dipping plain cotton cloth in a high-tech broth full of silver nanowires and carbon nanotubes, Stanford researchers have developed a new high-speed, low-cost filter that could easily be implemented to purify water in the developing world.
Instead of physically trapping bacteria as most existing filters do, the new filter lets them flow on through with [...]

Anger, depression, and helplessness are the main psychological responses being seen in response to the catastrophic Deepwater Horizon oil spill in the Gulf of Mexico, and they are likely to have long-lasting effects, according to an interview in Ecopsychology, a peer-reviewed, online journal published by Mary Ann Liebert, Inc. The interview is available free online [...]

Blockbusters like Avatar, UP or Toy Story 3 will bring the 3-D into home living rooms, televisions and computers. There are already displays available and the new Blu-ray players can already play 3-dimensional movies based on MVC. The first soccer games were recorded stereoscopically at the Football World Championships in South Africa. What is missing [...]

A group of “professional couch potatoes,” as one researcher described them, has proven that even moderate exercise — in this case walking at one’s own pace for 40 minutes three times a week — can enhance the connectivity of important brain circuits, combat declines in brain function associated with aging and increase performance on cognitive [...]

@imajes sends us this:
By autonomously navigating the water’s surface, Seaswarm proposes a new system for ocean-skimming and oil removal. Seaswarm uses a photovoltaic powered conveyor belt made of a thin nanowire mesh to propel itself and collect oil. The nanomaterial, patented at MIT, can absorb up to 20 times its weight in oil. The flexible [...]

Research from the University of Exeter has revealed taking a dietary supplement to boost nitric oxide in the body can significantly boost stamina during high-intensity exercise.
The study has important implications for athletes, as results suggest that taking the supplement can allow people to exercise up to 20% longer and could produce a 1-2% improvement in [...]

Electronic products pollute our environment with a number of heavy metals before, during and after they’re used. In the U.S. alone, an estimated 70% of heavy metals in landfill come from discarded electronics. With flat screen TVs getting bigger and cheaper every year, environmental costs continue to mount.
To counter this, a new Tel Aviv University [...]

Drought-tolerant crops have moved closer to becoming reality.
A collaborative team of scientists has made a significant advance on the discovery last year by the University of California, Riverside’s Sean Cutler of pyrabactin, a synthetic chemical that mimics a naturally produced stress hormone in plants to help them cope with drought conditions.
Led by researchers at [...]

Fire up the citronella-scented tiki torches, and slather on the DEET: Everybody knows these simple precautions repel insects, notably mosquitoes, whose bites not only itch and irritate, but also transmit diseases such as West Nile virus, malaria and dengue.
Now, Johns Hopkins scientists have discovered what it is in the bugs’ molecular makeup that enables citronellal [...]

Tobacco companies may be using Web 2.0 media, such as YouTube, to market their products to young people, so getting around marketing restrictions for tobacco content in place elsewhere, suggests research published online in Tobacco Control.
Tobacco companies have always vehemently denied advertising on the Internet. Several of them signed up to a voluntary agreement to [...]