In the first statewide study of extensively drug-resistant tuberculosis (XDR TB) in the United States, California officials have identified 18 cases of the dangerous and difficult-to-treat disease between 1993 and 2006, and 77 cases that were one step away from XDR TB. The study appears in the August 15 issue of Clinical Infectious Diseases, now available online.

California reports almost 3,000 cases of tuberculosis annually, the largest number of TB cases of any U.S. state. California has also led the nation since 2002 in the number of multidrug-resistant tuberculosis (MDR TB) cases—those that are resistant to isoniazid and rifampin, the two antibiotics that form the backbone of TB treatment. XDR TB is resistant to even more classes of antibiotics, including fluoroquinolones and one of three injectable second-line drugs. The authors of the new study evaluated drug susceptibility data of MDR TB cases identified by the California TB Registry between 1993 and 2006, looking for cases that fit the XDR TB definition.

An apple peel powdering process developed at Cornell University to fortify foods has made its first appearance in the Olympics Games. Six thousand 32-gram tubes of “Applebooster" an organic applesauce fortified with dried apple peel powder were given to approximately 750 U.S. Olympic athletes and 250 coaches as they boarded their flights to China earlier this month.

The company says their process enhances the nutritional value of foods by reintroducing ground apple peel into the manufacturing process.

'Erasing' drug-associated memories may prevent recovering drug abusers from relapsing, researchers at the University of Cambridge have said. The team, led by Professor Barry Everitt, was able to reduce drug-seeking behaviors in rats by blocking a brain chemical receptor important to learning and memory during the recall of drug-associated memories. Their research, which was funded by the Medical Research Council, was reported in the 13 August issue of The Journal of Neuroscience.

The Cambridge scientists found that by disrupting or erasing memories associated with drug use during recall, they could prevent the memories from triggering relapses and drug taking.

Researchers have discovered an unusual molecule that is essential to the atmosphere's ability to break down pollutants, especially the compounds that cause acid rain. It's the unusual chemistry facilitated by this molecule, however, that will attract the most attention from scientists.

Somewhat like a human body metabolizing food, the Earth's atmosphere has the ability to "burn," or oxidize pollutants, especially nitric oxides emitted from sources such as factories and automobiles. What doesn't get oxidized in the atmosphere falls back to Earth in the form of acid rain.

While invasive electrode recordings in humans show long-term promise, non-invasive techniques can also provide effective brain-computer interfacing (BCI) and localization of motor activity in the brain for paralyzed patients with significantly reduced risks and costs as well as novel applications for healthy users.

Two issues hamper the ease of use of BCI systems based on non-invasive recording techniques, such as electroencephalography (EEG):

Researchers testing the long-held theory that therapeutic massage can speed recovery after a sports injury have found early scientific evidence of the healing effects of massage.

The scientists have determined that immediate cyclic compression of muscles after intense exercise reduced swelling and muscle damage in a study using animals.

Though they say it's too soon to apply the results directly to humans in a clinical environment, the researchers consider the findings a strong start toward scientific confirmation of massage's benefits to athletes after intense eccentric exercise, when muscles contract and lengthen at the same time.