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Decaffeinated coffee may have a harmful effect on the heart by increasing the levels of a specific cholesterol in the blood, researchers say. Their explanation is that caffeine-free coffee is often made from a type of bean with a higher fat content.
It's a space-opera scene we know by heart: The hero's tiny craft faces off against the vast enemy ship. Now scale down the set a billion times or so, and replace Luke Skywalker's X-wing and the Death Star with a clump of drug-bearing molecules and a misshapen cancer cell. This scenario -- from a National Cancer Institute video -- is just one possibility offered by the burgeoning field of cancer nanotechnology, where miniscule molecules are designed with literally atomic precision to combat a disease that kills half a million Americans every year.
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.