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In the first study of its kind, researchers have found that peyote -- for now, the only legal hallucinogenic drug in the United States -- doesn't rob regular users of brain power over time.
Under current law, the government is allowed to forcibly extract DNA from people who're convicted of a crime. However, if Senators Jon Kyl (R-AZ) and John Cornyn (R-TX) have their way, law enforcement officials will be able to demand a DNA sample of people who're merely arrested, even if they're not charged with a crime. Cornyn and Kyl have proposed an amendment to the Violence Against Women act that would add to the federal Combined DNA Index System the DNA of anyone detained by a government agency.
A sharp image of a suspected crash site for the Mars Polar Lander has turned out to contain only natural features of the Martian landscape.
NASA’s Mars Polar Lander (MPL) was lost during its entry through the Red Planet’s atmosphere in December 1999. An investigation determined that the lander’s legs had deployed before touching down, which may have sent a false signal that the craft had landed, causing the engines to shut down prematurely. The lander may then have plummeted 40 metres to the surface.
Habitual activity--smoking, eating fatty foods, gambling--changes neural activity patterns in a specific region of the brain when habits are formed. These neural patterns created by habit can be changed or altered. But when a stimulus from the old days returns, the dormant pattern can reassert itself, according to a new study from the Massachusetts Institute of Technology, putting an individual in a neural state akin to being on autopilot.
With a good night's rest increasingly losing out to the Internet, e-mail, late-night cable and other distractions of modern life, a growing body of scientific evidence suggests that too little or erratic sleep may be taking an unappreciated toll on Americans' health.