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Officials at the Guangdong CDC, while confident that culling the civets was necessary, are not totally convinced that it will curtail an outbreak. They have ordered a further extermination of rats--a much more elusive target--because of evidence that they carry a similar virus. Dr. Rob Breiman, an epidemiologist from the U.S. Centers for Disease Control and Prevention, is leading the WHO team currently tracing the origins of last year's epidemic in Guangdong. Breiman observes, "Everyone certainly thinks this is meaningful. But where is the civet cat in the chain? Are they getting it from another animal...
That possibility, plus Gusev's relatively smooth, obstacle-free terrain, is why the crater presented such a tempting target--and why NASA scientists are so thrilled that the spacecraft made it. "If you were looking for a place to land in the U.S., geologists would land in the Grand Canyon and engineers would land [in a plain] like Kansas," says paleontologist Andrew Knoll, a member of the rover long-range-planning team. "Gusev gives us both a congenial site for roving and still has a high probability of getting to good outcroppings...
BREAST: A group of drugs called aromatase inhibitors that were once used to treat metastatic breast cancer is helpful in less advanced cases as well. They target tumors that need estrogen by lowering the amount of estrogen in the body. Women who took aromatase inhibitors for five years after taking tamoxifen (which also shrinks estrogen-sensitive tumors) reduced their risk of recurrence by almost half...
...sealed off the Gaza Strip and threatened to resume assassinations of Palestinian militants after a Hamas suicide bombing - the group's first carried out by a woman - killed four Israelis at a border crossing. Deputy Israeli Defense Minister Zeev Boim named Hamas' spiritual leader Sheikh Yassin as a key target. Military Move JAPAN In the first deployment of Japanese troops to a combat zone since World War II, 30 members of what will be a 1,000-strong humanitarian force left for Iraq. Polls show that about half of Japanese oppose the mission. Prime Minister Junichiro Koizumi argued the country...
Under a microscope, the sensors, called microcantilevers, resemble rows of diving boards or spatulas, each vibrating spontaneously. They can be made so thin that 100 would fit snugly inside a human hair. The cantilever is coated on one side with a chemical that specifically binds a target molecule--say, a cancer-related protein or a plastic explosive. When that molecule sticks to it, the cantilever bends and the frequency of its vibration changes, which can be measured by bouncing a laser beam off its surface. Thundat and his team are only months from completing an exquisitely sensitive handheld detector that...