Ice age imprint found on cod DNA
November 14, 2007 07:45 AM - University of Sheffield
An international team of researchers, led by the University of Sheffield, has demonstrated how Atlantic cod responded to past natural climate extremes. The new research could help in determining cods vulnerability to future global warming.
Nicotine addiction slashed in test of new cigarette smoking strategy
November 14, 2007 07:43 AM - University of California - San Francisco
Scientists are reporting the first successful strategy to reduce smokers’ nicotine dependence while allowing them to continue smoking. The study provides strong support for proposals now being considered in Congress to authorize FDA regulation of cigarette smoking, according to the research team.
Two large meat processors defend carbon monoxide use despite risks
November 13, 2007 08:09 PM - By Christopher Doering
WASHINGTON (Reuters) - Two of the biggest U.S. meat processors on Tuesday defended a packaging technique designed to keep meat looking fresh at grocery stores even as U.S. lawmakers criticized it as unsafe and misleading.
Packers use carbon monoxide to stabilize the color of meat, but some Democrats said the process misleads consumers by making the products look safer than they really are, and puts the public at risk of eating spoiled meat.
Rep. Bart Stupak, Michigan Democrat and chairman of a House Energy and Commerce subcommittee, called the practice deceptive and "a potential health threat," and accused U.S. regulators of "turning a blind eye" toward health dangers.
Merck tells AIDS vaccine volunteers who got jab
November 13, 2007 07:43 PM - Reuters
WASHINGTON (Reuters) - Thousands of people who volunteered to test an experimental AIDS vaccine that may have actually raised the risk of infection will be told if they got the actual shot, researchers said on Tuesday.
Merck & Co. Inc. and academic researchers said they would "unblind" the study, meaning everyone would find out who got the active shot and who got a dummy injection.
Two international trials of the experimental vaccine were stopped in September after it became clear the vaccine did not prevent infection with the AIDS virus.
A low-carb diet may stunt prostate tumor growth
November 13, 2007 08:08 AM - Duke University Medical Center
A diet low in carbohydrates may help stunt the growth of prostate tumors, according to a new study led by Duke Prostate Center researchers. The study, in mice, suggests that a reduction in insulin production possibly caused by fewer carbohydrates may stall tumor growth.
New Standard For Sustainable Carpets
November 12, 2007 07:05 PM - Glenn Hasek, Green Lodging News
CHICAGO—Architects, designers and end users will now have one Standard to identify carpets that have a reduced environmental impact. The first multi-attribute American National Standards Institute (ANSI)-approved Standard—NSF 140-2007, Sustainable Carpet Assessment Standard for environmentally preferable building materials—was introduced at Greenbuild 2007.
The unified Standard for sustainable carpet is voluntary, inclusive, based on life cycle assessment (LCA) principles, and offers three levels of achievement for attaining various levels of reduced environmental impact (silver, gold and platinum). By defining environmental, social and economic performance requirements, the Standard provides benchmarks for continual improvement and innovation within the building industry.
Waste Water Plus Bacteria Make Hydrogen Fuel: Study
November 12, 2007 06:20 PM - By Deborah Zabarenko, Environment Correspondent, Reuters
WASHINGTON (Reuters) - Bacteria that feed on vinegar and waste water zapped with a shot of electricity could produce a clean hydrogen fuel to power vehicles that now run on petroleum, researchers reported on Monday.
These so-called microbial fuel cells can turn almost any biodegradable organic material into zero-emission hydrogen gas fuel, said Bruce Logan of Penn State University.
This would be an environmental advantage over the current generation of hydrogen-powered cars, where the hydrogen is most commonly made from fossil fuels. Even though the cars themselves emit no climate-warming greenhouse gases, the manufacture of their fuel does.
New technique to treat varicose veins
November 12, 2007 12:43 PM - Rachel Champeau
Los Angeles - Dr. Peter Lawrence, UCLA's chief of vascular surgery, picks up size 7 crochet hooks from a fabric store — not to make sweaters or scarves but to use in a new technique he has developed to treat varicose veins.
Early results of the new outpatient procedure, called light-assisted stab phlebectomy, or LASP, appear in a study in the October issue of the journal The American Surgeon. More than 250 patients at UCLA have undergone Lawrence's procedure, which is designed to remove branch varicose veins from the thighs, calves and ankles.
Drug injecting triggers most Mauritius HIV cases
November 12, 2007 12:35 PM -
ROCHE BOIS, Mauritius (Reuters) - Drug abuse accounts for 92 percent of new HIV infections in Mauritius, up from just 14 percent in 2002, the government said on Monday.
The Indian Ocean island nation has an estimated HIV prevalence rate of 1.8 percent, which is low for the region. On the African mainland, HIV infection rates stand at 16.1 percent in Mozambique and 18.8 percent in South Africa, for example.
But officials say risky practices like sharing needles used for injecting drugs are causing many more infections. Mauritius suffers the second highest rate of heroin and opiate use in the world, according to U.N. figures.
St. Jude defibrillator wires under scrutiny: report
November 12, 2007 08:14 AM - Reuters
Reports are emerging that some defibrillator wires made by St. Jude Medical Inc are in rare instances puncturing holes in the hearts of cardiac patients, the Wall Street Journal reported Monday in its online edition.
The devices in question -- the Riata line of defibrillator leads from St. Jude -- are wires that connect to patients' hearts, according to the Journal.