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BEIJING, Oct. 11 (Xinhuanet) -- Debates in the medical field developed on Monday as a U.S. government panel recommended that men of all ages should stop getting prostate cancer blood screenings.The United States Preventive Services examined all the evidence and found little if any reduction in deaths from routine P.S.A. screening and suggested that the test does more harm than good to healthy men.The P.S.A. test for prostate cancer, a blood test to screen for a protein that may indicate cancer, has become widely used because it can help detect tiny tumors at a very early sta ge, when they are theoretically most treatable.Unfortunately, according to the task force, the vast majority of the results are false-positives: the men don’t actually have cancer. And most of those found to have cancerous cells would not suffer ill effects because their cancer is so slow-growing that it would not cut short their lives. Those with faster-growing cancers may also not be helped if the cancer is extremely aggressive.After the recommendation came out last week, many prostate cancer specialists have been pushing back.Urologist Dr. Mark DeGuenther said this recommendation is more about saving money than saving lives. He said death rates from prostate cancer have dropped 40 percent since men began getting screened at age 40 and he says it will save taxpayers and patients more money in the long run to diagnose and treat cancers earlier rather than wait and have to provide expensive care for advanced stage cancers."We all agree that we've got to do a better job of figuring out who would benefit from P.S.A. screening," said Dr. Scott Eggener, a prostate cancer specialist at the University of Chicago. "But a blanket statement of just doing away with it altogether ... seems over-aggressive and irresponsible."Dr. Deepak Kapoor, chairman and chief executive of Integrated Medical Professionals, which includes the nation's largest urology practice, said "We will not allow patients to die, which is what will happen if this recommendation is accepted."That task force's recommendation isn't final - it's a draft open for public debate. And obviously the debate is already under way.

BEIJING, Dec. 17 (Xinhuanet) -- Restrictions on housing purchases in this city will continue next year without relaxation despite expected falls in property prices so far, local officials said on Friday. Even so, a property tax is unlikely to be put into effect for Beijing, they said.This year, the average price of commercial housing units stopped rising in July and so far has been lowered by 6.3 percent below what it had been in the same period last year. Of all of those who bought property in the 11 months of the year, 90 percent were first-time buyers, said an announcement released by the Beijing Municipal Commission of Housing and Urban-Rural Development."The restrictions worked well this year," said Wang Rongwu, with the commission, at a news conference on Friday morning. "But keeping the property market sound will require prolonged restrictions. Our specific goals for the purchase limits next year are still under discussion."Chen Baocun, deputy secretary-general of the National Real Estate Manager Alliance, said property developers will be able to cope with an extension of the limits."Developers didn't expect a sudden drop of the purchase restrictions next year," he said. "They are prepared to accept the policies for a longer time."In an attempt at tamping down property prices, the central government took time at the country's central economic work conference on Wednesday to encourage more cities to adopt a property tax. Such a tax is already being tried out in Shanghai and Chongqing.Beijing, though, is not likely to look seriously at adopting one, "unless it is otherwise required to by the central government", Wang said.

SAN FRANCISCO, Nov. 29 (Xinhua) -- Hewlett-Packard (HP) on Tuesday issued a statement to refute some security flaw claims on its LaserJet printers."Today there has been sensational and inaccurate reporting regarding a potential security vulnerability with some HP LaserJet printers. No customer has reported unauthorized access. Speculation regarding potential for devices to catch fire due to a firmware change is false," HP said in the statement.Tech blog "The Red Tape Chronicle" reported earlier Tuesday that researchers from Columbia University found that a feature named "remote firmware update" on HP's Internet-connected LaserJet printers could allow hackers take control of the device by installing malicious software, and even manage the printer to catch fire.In the statement, HP said that its LaserJet printers have a hardware element called "thermal breaker" that is designed to prevent a part of the device from overheating or causing a fire, noting that it cannot be overcome by a firmware change as it was reported.The Palo Alto, California-based company said that the specific vulnerability exists for some HP LaserJet printers it placed on a public Internet without a firewall. It conceded that on Apple's Mac computers and PCs running Linux system, it is possible for a specially formatted corrupt print job to trigger a firmware upgrade.The company said that it is building a firmware upgrade to mitigate the issue and suggested consumers could place printers behind a firewall and disable remote firmware upload on exposed printers.Researchers said in the earlier report that they believed the flaw is not limited to HP printers and millions of printers around the world could be vulnerable to hack attacks.

XUZHOU, Dec. 13 (Xinhua) -- Three critically injured students died in hospital in east China's Jiangsu Province early Tuesday, the government said, bringing the toll of Monday's school bus overturn to 15.The accident was the third serious one involving a school bus in China in less than a month.At least eight other children are still hospitalized, a government spokesman of Fengxian County said, without elaborating on the conditions of their injuries.A bus carrying 29 students on their way home fell into a roadside ditch when the driver tried to avoid a pedicab in the rural areas of Fengxian at 5:50 p.m. on Monday.The bus belonged to a primary school in Shouxian township. The government said the bus, designed with a maximum carrying capacity of 52 persons, was not overloaded.Also on Monday, another school bus carrying 59 students was badly hit by a truck in the city of Foshan, Guangdong Province, injuring 37 students, Guangzhou Daily reported Tuesday. Seven of the injured had been hospitalized.The accidents occurred only a day after the State Council moved to strengthen school bus safety after a deadly crash killed 19 pupils about a month ago.The nine-seat school bus illegally carrying 64 people collided head-on with a coal truck in northwestern Gansu Province on Nov. 16, killing 19 preschoolers and two adults, and injuring 43 others.Schools are few in numbers in the vast and sparsely populated rural areas of China. School bus is a relatively new thing in some rural areas as for decades children from the countryside had been trekking on rugged countryroads on foot to attend school. But rural school buses varied on quality and safety.Chinese Premier Wen Jiabao had called on government departments to "rapidly" draft safety regulations and standards for school buses while further improving the design, production and distribution of the vehicles.

WASHINGTON, Jan. 1 (Xinhua) -- Twin U.S. spacecraft to study the moon from crust to core put themselves into the lunar orbit on New Year's Eve and New Year's Day, the country's space agency said.The second Gravity Recovery And Interior Laboratory, or GRAIL-B, reached its lunar orbit at 5:43 p.m. EST (2243 GMT) on Sunday, according to the National Aeronautics and Space Administration (NASA).The GRAIL-A started orbiting the moon at 5 p.m. (2200 GMT) Saturday.The insertion maneuvers placed the spacecraft into a near-polar, elliptical orbit with an orbital period of approximately 11.5 hours, NASA said.Over the coming weeks, the GRAIL team will execute a series of burns with each spacecraft to reduce their orbital period to just under two hours. At the start of the science phase in March 2012, the twin GRAILs will be in a near-polar, near-circular orbit with an altitude of about 55 km."NASA greets the new year with a new mission of exploration," Administrator Charles Bolden said in a statement. "The twin GRAIL spacecraft will vastly expand our knowledge of our moon and the evolution of our own planet."During GRAIL's science mission, the two probes will transmit radio signals precisely defining the distance between them. As they fly over areas of greater and lesser gravity caused by visible features such as mountains, craters and masses hidden beneath the lunar surface, the distance between the twin spacecraft will change slightly.Scientists will translate this information into a high-resolution map of the moon's gravitational field.The data will allow scientists to understand what goes on below the lunar surface and increase knowledge of how Earth and its rocky neighbors in the inner solar system developed into the diverse worlds we see today.