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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."

MOSCOW, March 11 (Xinhua) -- A new crew which are to depart for the International Space Station (ISS) at the end of March have successfully passed the pre-flight tests, the Russian Federal Space Agency (Roscosmos) announced on Friday.At a press conference held at Russia's Cosmonauts Training Center, a Roscosmos spokesman said two Russian cosmonauts Andrei Borisenko and Alexander Samokutyaev and a U.S. astronaut Ronald Garn will leave for the ISS by a Russian Soyuz-TM-21 spacecraft on March 30.On March 17, the three crew members and their backup crew members, Anton Shkaplerov, Anatoly Ivanishin and Daniel Burbank, will make their final preparation for the space trip in the Baikonur space site in Kazakhstan.According to the Roscosmos, the three main crew members are expected to spend 170 days in the ISS. During the period, they will receive two U.S. space shuttles and three Russian Progress cargo ships and conduct a spacewalk.The agency also revealed the Soyuz-TM-21 spacecraft scheduled for the ISS was named as Gagarin.The year of 2011 was announced as Russia's Space Year to celebrate the 50th anniversary of the launch of the first Russian manned space flight carrying cosmonaut Yuri Gagarin in 1961 for a 90-minute flight.

JOHANNESBURG, March 8 (Xinhua) -- In order to combat piracy and to improve maritime safety, South African authorities have begun using a sophisticated navigation satellite system, it was announced on Tuesday.Piracy, especially by Somalis, has been increasing along Africa east coast in recent years. The South African Press Association (SAPA) reported on Tuesday that Karl Otto, head of the South African Maritime Safety Authority (SAMSA) announced the surveillance tool at a conference in Durban.Called Long Range Identification and Tracking (LRIT), the system monitors and tracks vessels in waters south of the equator.Otto said the introduction of the LRIT followed concerns over the safety of seafarers, the safety standards of ships within South African waters.Otto said there were high levels of cargo at risk, such as fuels and oils.He said reasons for installing the system included the number of shipwrecks along the South African coast, and the threat of pollution of the marine environment by ships."It also serves as a mechanism to prevent piracy."Otto said the satellite system has the capacity to identify and track vessels up to 1,000 nautical miles (1,850 km) from the South African coastline as well as South African-flagged vessels anywhere in the world."This is a revolutionary development in the security of our seas," he said.SAMSA was determined to protect South Africa's seafarers, its coastline and the marine environment, Otto said.

ABU DHABI, Feb. 10 (Xinhua) -- China believes that Egypt has sufficient wisdom and capability to overcome difficulties and realize national stability and development, visiting Chinese Foreign Minister Yang Jiechi told his Egyptian counterpart in a telephone conversation Thursday.Yang, who was on a visit to the United Arab Emirates (UAE), told the Egyptian Foreign Minister Ahmed Abul Gheit that China pays close attention to the situation in Egypt, adding that Egypt, as an influential country in the Middle East, is vital to the region's stability.Egypt's internal affairs should be resolved by Egyptians themselves and should be free of outside interference, he added.Gheit briefed Yang on Egypt's situation, saying his government was taking measures to safeguard social stability and return the country to normality.Both sides also expressed satisfaction with the development of China-Egypt relations in the past year, saying the strategic cooperation between the two countries has great potential and broad development prospects.Yang arrived in the UAE capital of Abu Dhabi late Wednesday for an official visit to the Gulf nation.

BEIJING, Feb. 12 (Xinhua) -- A delegation of the Chinese People's Political Consultative Conference (CPPCC) left Beijing Saturday evening to visit Ghana, Rwanda and Mozambique.The delegation, led by Vice Chairman Li Zhaozhuo of the CPPCC National Committee, was invited by the Parliament of Ghana, the Rwandan Chamber of Deputies and the Parliament of Mozambique.