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WASHINGTON, April 4 (Xinhua) -- Scientists have identified a gene that appears to play a role in regulating how much alcohol people drink, in a study of over 47,000 people published Monday in the Proceedings of the National Academy of Sciences.The researchers say that finding a common genetic variation influencing levels of alcohol consumption may lead to a better understanding of mechanisms underlying alcohol drinking behavior in the general population.The gene, called "autism susceptibility candidate 2", or AUTS2, has previously been linked to autism and attention deficit hyperactivity disorder, but its function is not known.The new study, by an international consortium led by scientists at Imperial College London and King's College London, found that there are two versions of the AUTS2 gene, one three times more common than the other. People with the less common version drink on average five percent less alcohol than people with the more common version.The gene is most active in parts of the brain associated with neuropsychological reward mechanisms, suggesting that it might play a part in regulating the positive reinforcement that people feel when they drink alcohol.Alcohol consumption is known to be partly determined by genes but until now the only gene known to make a notable contribution was the gene encoding alcohol dehydrogenase, an enzyme that breaks down alcohol in the liver.Professor Paul Elliott, from the School of Public Health at Imperial College London, said: "Of course there are a lot of factors that affect how much alcohol a person drinks, but we know from twin studies that genes play an important role. The difference that this particular gene makes is only small, but by finding it we've opened up a new area of research into the biological mechanisms that control drinking."

WASHINGTON, May 4 (Xinhua) -- The U.S. National Aeronautics and Space Administration (NASA) announced Wednesday that its Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein's general theory of relativity, which the spacecraft was designed to test.The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time around a gravitational body, and frame- dragging, the amount a spinning object pulls space and time with it as it rotates.GP-B determined both effects with unprecedented precision by pointing at a single star, IM Pegasi, while in a polar orbit around Earth. If gravity did not affect space and time, GP-B's gyroscopes would point in the same direction forever while in orbit. But in confirmation of Einstein's theories, the gyroscopes experienced measurable, minute changes in the direction of their spin, while Earth's gravity pulled at them.The findings are available online in the journal Physical Review Letters."Imagine the Earth as if it were immersed in honey. As the planet rotates, the honey around it would swirl, and it's the same with space and time," said Francis Everitt, GP-B principal investigator at Stanford University. "GP-B confirmed two of the most profound predictions of Einstein's universe, having far- reaching implications across astrophysics research."GP-B is one of the longest running projects in NASA history, with agency involvement starting in the fall of 1963 with initial funding to develop a relativity gyroscope experiment. Subsequent decades of development led to groundbreaking technologies to control environmental disturbances on spacecraft, such as aerodynamic drag, magnetic fields and thermal variations. The mission's star tracker and gyroscopes were the most precise ever designed and produced.GP-B completed its data collection operations and was decommissioned in December 2010."The mission results will have a long-term impact on the work of theoretical physicists," said Bill Danchi, senior astrophysicist and program scientist at NASA Headquarters in Washington. "Every future challenge to Einstein's theories of general relativity will have to seek more precise measurements than the remarkable work GP-B accomplished."

BEIJING, Feb. 25 (Xinhua) -- Chinese Vice Premier Li Keqiang on Thursday ordered local governments to increase funding for affordable housing projects, stressing that the construction of 10 million units was a mandatory task that must be fulfilled this year.Speaking at a national conference on affordable housing for low and middle income groups, Li said that the construction of 10 million affordable housing units this year is of great significance for the government to stabilize public expectations, control housing prices, improve people's lives and boost domestic consumption."Housing is imperative for people's lives and local governments must waste no time in beginning the construction of 10 million affordable housing units this year and putting them into service as early as possible," Li said.To facilitate the government's subsidized affordable housing projects, Li said that local governments should ensure basic market supply with small units and guide the public to "reasonable consumption."More efforts are also needed to develop low-rent public housing and satisfy the demands of residents for affordable public housing, Li said. To support the construction of affordable housing, local governments can use tax breaks, determine the rent for public housing reasonably and finance construction projects in different ways, such as bank loans and social investment, he added.Li also called on local governments to increase land supplies for common commercial housing construction. The vice premier called on authorities to ensure transparency and fairness in the distribution of affordable housing units to benefit low-income groups who are in need.He stressed the need to discourage house purchases for the purposes of investment and speculation and to increase the supply of common commercial apartments and strictly implement the central government's macro control policies for the real estate market.The Chinese central government signed strict agreements with provincial governments to guarantee the construction of 10 million government-subsidized apartments this year. The target of building 10 million government-subsidized apartments is 72.4 percent more than last year, according to official figures.China's affordable housing provisions are divided into different categories, including "economic housing" that are sold below market prices, "price-capped housing," government-owned "low-rent housing" for extremely poor residents and "public-rent housing" for a wider range of people.

PYONGYANG, Feb. 14 (Xinhua) -- Kim Yong Nam, president of the Presidium of the Supreme People's Assembly of the Democratic People's Republic of Korea (DPRK), met Chinese Minister of Public Security Meng Jianzhu here on Monday.Kim said it was the consistent stand of the Worker's Party of Korea (WPK) and the government and the firm will of the people to develop the traditional DPRK-China friendship generation after generation.The DPRK is sincerely happy to see the great achievement China has made and wish that the Chinese people make even more progress, Kim said.Meng, also a State Councilor, said the traditional friendship between the two neighboring countries has strengthened through the ages. He expressed his expectations of inheriting the friendship, deepening communications and cooperation in various areas and promoting the China-DPRK friendship.Ri Yong Ho, Presidium of Political Bureau of Central Committee of WPK and chief of the Korean People's Army General Staff, also met Meng on the same day.Ju Sang Song, a member of the Political Bureau of Central Committee of the WPK and Minister of People's Security, met Meng on Sunday. The two achieved consensus on making more efforts to develop cooperation and communications on public security to make active contributions to the traditional China-DPRK friendship. An agreement on cooperation between the the two security ministries was signed after the meeting.Meng arrived at Pyongyang on Sunday at the invitation of Ju Sang Song.

BEIJING, March 15 (Xinhuanet) -- The number of Alzheimer patients is growing rapidly, so is that of unpaid caregivers, says a report released Tuesday by the Alzheimer's Association.Nearly 15 million caregivers, most of them family members but also friends, are providing billions of hours of unpaid care for Alzheimer's patients and other forms of dementia in the U.S. — 37 percent more than last year, the report says.Alzheimer's is the sixth leading cause of death in the nation, and the only one among the top 10 that have no prevention or cure, says William Thies, chief medical and scientific officer of the Alzheimer's Association.However, if people were more aware of early symptoms and were diagnosed sooner, then planning could help ease stress on patients and caregivers, according to Beth Kallmyer, senior director of constituent services of Alzheimer's Association."The toll on families is devastating," says Kallmyer, "Stress is extremely high, and one-third are experiencing depression."The time and stress of caring for an Alzheimer’s patient takes a physical toll, translating into nearly 8 billion dollars worth of extra health care costs for caregivers, the report says.

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