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DNA and a Fingerprint: How FBI Found Bomb Suspect

VOA News/Associated Press WASHINGTON — In the hours before his arrest, as federal authorities zeroed in and secretly accumulated evidence, Cesar Sayoc was in his element: spinning classic and Top 40 hits in a nightclub where he’d found work as a DJ. As he entertained patrons from a dimly lit booth overlooking a stage at the Ultra Gentlemen’s Club, where Halloween decorations hung in anticipation of a costume party, he could not have known that investigators that very evening were capitalizing on his own mistakes to build a case against him. He almost certainly had no idea that lab technicians had…
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Traumatic Experiences Can Be Inherited From Parent to Child

Can a traumatic experience, or any change in our lifestyle be transmitted genetically to our children? This phenomenon, called Epigenetic inheritance has been linked in a multitude of diseases, from obesity to psychiatric problems like bipolar disorder where there is a gene that is clearly identified. But up to this date, no mechanism by which this occurs has been identified. A team of scientists from the Institute of Brain Research at the University of Zurich Switzerland, offer the key in the magazine "Nature Neuroscience". Their work suggests that the environment leaves traces in the brain, organs and also in the gametes. And that it is through small fragments of RNA of…
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A New Gel May Prevent HIV Infection

A vaginal gel can protect users against the human immunodeficiency virus (HIV), although it has to be used three hours after having sex. At the moment its efficacy and safety has only been tested in monkeys, but in the light of these findings, the researchers believe that it could be used in humans. Developing new methods for preventing infection of the virus of AIDS in countries with few resources is a priority to reduce the spread of the epidemic. Until now, microbicidal gels had proved most effective, although they should be applied before intercourse, which compromised their employment in many…
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