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BEIJING, Oct. 11 (Xinhuanet) -- Scientists have discovered that blind optimism is related to brain's frontal lobes which are associated with processing errors, according to a British study published Monday in the journal Nature Neuroscience.Scientists at the University College of London scanned brains of volunteers who were asked to estimate their personal likelihood of involving in negative events, like a divorce or cancer,  before and after given the average probability of these events occurring.They found that the volunteers who estimated lower probability (or the more optimistic ones) than the given one raised their estimates a little bit later while those estimated higher probability altered their estimates much more.Through the brain scanner, scientists saw there was less activity in the volunteers' frontal regions when the information given was worse than expected while more activity when the information was better than expected. It suggested that the more optimistic people neglected the negative predictions."The more optimistic we are, the less likely we are to be influenced by negative information about the future," said Dr. Tali Sharot, lead author of the study. He added being optimistic clearly had some benefits, "but it can also mean that we are less likely to take precautionary action, such as practising safe sex or saving for retirement. So why don't we learn from cautionary information?"

BEIJING, Oct. 1 (Xinhua) -- China plans to decrease leprosy rates by 50 percent over the next 10 years, according to a joint plan to fight the infectious disease issued by the Ministry of Health and ten other ministerial-level institutions.The prevalence rate is targeted to be brought down to one case per 10,000 people by 2015. The rate will further shrink to one in every 100,000 people by 2020 in at least 98 percent of the country's counties, according to the plan.A total of 500,000 cases of leprosy have been reported and treated for free throughout the country since the founding of the People's Republic of China on Oct. 1, 1949.The number of leprosy cases has plummeted over the past 62 years, but the country still faces challenges in fighting the disease, the plan said.Leprosy, an infectious disease that has affected humanity for over 4,000 years, is primarily characterized by skin lesions and progressive physical debility, and can cause permanent nerve damage.Despite sustained efforts -- and considerable success -- in bringing the disease under control, leprosy is still a serious disease in some parts of China and people who have been cured of the disease continue to face discrimination.More than 1,700 new cases have been reported annually in the past five years. The provinces of Sichuan, Yunnan, Guizhou and Hunan and the Tibet Autonomous Region are most affected by the disease, according to the plan.

BEIJING, Oct. 11 (Xinhuanet) -- Scientists have discovered that blind optimism is related to brain's frontal lobes which are associated with processing errors, according to a British study published Monday in the journal Nature Neuroscience.Scientists at the University College of London scanned brains of volunteers who were asked to estimate their personal likelihood of involving in negative events, like a divorce or cancer,  before and after given the average probability of these events occurring.They found that the volunteers who estimated lower probability (or the more optimistic ones) than the given one raised their estimates a little bit later while those estimated higher probability altered their estimates much more.Through the brain scanner, scientists saw there was less activity in the volunteers' frontal regions when the information given was worse than expected while more activity when the information was better than expected. It suggested that the more optimistic people neglected the negative predictions."The more optimistic we are, the less likely we are to be influenced by negative information about the future," said Dr. Tali Sharot, lead author of the study. He added being optimistic clearly had some benefits, "but it can also mean that we are less likely to take precautionary action, such as practising safe sex or saving for retirement. So why don't we learn from cautionary information?"

BEIJING, Nov. 15 (Xinhua) -- Police from China and Angola have jointly busted a criminal gang that kidnapped Chinese females and forced them into prostitution in Angola, according to China's Ministry of Public Security on Tuesday.Police rescued 19 Chinese females during the operation on Oct. 25, when 11 suspects were arrested in Angola and five were caught in China, according to a statement from the ministry.Those female victims and suspects have been transferred back to China, said the statement.In order to boost international cooperation against human trafficking, China had ratified the Protocol to Prevent, Suppress and Punish Trafficking in Persons, Especially Women and Children, supplementing the United Nations Convention against Transnational Organized Crime, in February 2010.Moreover, Chinese police have entered into cooperation agreements with more than 50 countries, which contain anti-human trafficking terms.

SHENYANG, Nov. 17 (Xinhua) -- A MD-90 aircraft left the northeastern city of Shenyang for its American home on Thursday, ending the service of the last McDonnell-Douglas jet for Chinese airlines.Chinese carriers will no longer operate MD-made jets due to growing market demands, said Lu Changchun, deputy general manager with the north China branch of China Southern Airlines, which has operated the MD-90 jet for over a decade.MD-90 jets were involved in no accidents during the decade-long-service in China, so safety concerns did not lead to their retirement, Lu said, adding about 1,000 MD-90 jets are still flying around the world.Lu, however, admitted that supply of aircraft materials was affected as the production line of MD jets shrank, after McDonnell-Douglas Cooperation was merged into Boeing in 1997.MD jets were replaced mainly because Chinese airlines need new models to accommodate air travel demands fueled by the economic boom, Lu said.The north China branch of China Southern Airlines also announced Thursday the retirement of five A300-600R planes, which are replaced by A320 family jets. China Southern Airlines began flying an Airbus A380 superjumbo in China in October.China's domestic air travel market is predicted to grow 13.9 percent annually by 2014 and transport 379 million domestic air passengers, which will make the country the world's second-largest air travel market after the United States, according to a report released by the International Air Transport Association.Back in the 1990s, a Shanghai-based aircraft maker assembled two MD-90 jets in China, Lu said, adding the two jets retired this year.Change of jets model serves the strategic transformation of China Southern Airlines and meets the market demands, Lu said.Li Jiaxiang, chief of China's civil aviation administration, estimated that over 1.5 trillion yuan (235 billion U.S. dollars) will be invested in the civil aviation industry by 2015, adding about 2,000 aircraft to the country's fleet.Commercial Aircraft Corporation of China, producer of China's first self-developed jumbo jet, the C919, has announced that it will complete the design for the passenger plane in 2012. The jet is expected to take off in 2014 and put into service in 2016.