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BEIJING, Aug. 2 (Xinhuanet) -- The first close-up pictures of the asteroid Vesta, a protoplanet that dates back to the early days of the solar system, were revealed Monday by NASA scientists.The images were taken by the U.S. space agency's Dawn robotic probe, which is two weeks into a planned year-long survey of the second largest object in the main asteroid belt, located between Mars and Jupiter.About twice the size of California, Vesta is second in size only to Ceres, Dawn's next target and, along with Pluto, one of just five known dwarf planets. NASA is spending 466 million dollars to explore Vesta and Ceres during the course of a 10-year mission.Images from Dawn show Vesta a surprisingly diverse terrain and several unexplained geologic features. Chaotic terrain near the south pole is dominated by a towering central peak and huge ripple-like grooves stretching around its equatorial belt. Bright spots, dark pits and craters are filled with unexplained streaks of black and white debris. Terrain north of the grooves is much more heavily cratered.Scientists believe Vesta grew from a clump of gas and dust left over after the sun's birth some 4.65 billion years ago, a supernova explosion, which added radioactive materials to the growing body.Dawn will spend about a year circling Vesta, tweaking its orbit and altitude using an innovative technology called ion propulsion system, chief engineer Marc Rayman with NASA's Jet Propulsion Laboratory in California said.The ion propulsion system will enable Dawn to leave Vesta's orbit after a year of study and head off to Ceres, which is the largest object in the asteroid belt.

WELLINGTON, Aug. 30 (Xinhua) -- Middle-aged women who wolf down their meals are much more likely to be overweight or obese than women who eat slower, New Zealand research has found.In what they claimed to be the first such nationwide study anywhere, Otago University researchers analyzed the relationship between self-reported speed of eating and body mass index (BMI) in more than 1,500 New Zealand women aged 40 to 50, an age group known to be at high risk of weight gain.The study by the university's department of human nutrition could lead to new and more successful methods of treating obesity, say the researchers.Study principal investigator Dr Caroline Horwath said that after adjusting for factors such as age, ethnicity, smoking, physical activity and menopause status, the researchers found that the faster women reported eating, the higher their BMI.Results from the two-year follow-up were expected to be published next year, and if analysis confirmed a causal relationship, the researchers would test interventions that focused on encouraging women to eat more slowly.

BEIJING, Sept. 26 (Xinhuanet) -- Fu Ming'ai was reunited with his family on Sunday after 22 years.He is one of the more than 1,400 abducted children who were helped by a national DNA database, which helps match trafficked children and their parents."This shows the superiority of the national database," Chen Shiqu, director of the Ministry of Public Security's anti-human trafficking office, said on Sunday. The database was established in April 2009, when the ministry launched a nationwide crackdown on human trafficking."The ministry's branches across the country have been ordered to take blood samples of unidentified children and enter the information in the DNA database. Meanwhile, parents who report children missing also have their samples deposited in the repository," Chen said. "The database will point out matches for parents and children."DNA testing is accurate for both individual identification and kinship relations, and it is acknowledged as one of the most effective techniques to identify abducted children, according to the ministry.Fu, who was named Liu Qiang by his adoptive family in Shijiazhuang, capital of Hebei province, was picked up by his entire family at the railway station in his home city of Jishou, Hunan province."I resolved to find my parents, because I know I was kidnapped, not abandoned," said Fu, 26, a technician in an auto parts company in Tianjin. He remembered one day when he was 4, someone sprayed a substance in front of his face so that he could not open his eyes, and he was taken on a train.Fu left a blood sample with the DNA database in July. One month earlier, his parents had their blood samples taken when police said this could help the search for their son."I prayed to the gods, even in my dreams, to give my son back. He finally returned," said 55-year-old father Fu Gaomao, who was informed on Thursday of the successful match."Abducted children are found matching with their biological parents in the information bank every day," said Zhang Baoyan, founder of Baobeihuijia, or Baby Back Home, a volunteer group that assists in the nationwide search for missing children and offers support to their parents.

WASHINGTON, June 20 (Xinhua) -- The U.S. Food and Drug Administration (FDA) on Monday unveiled in a report a new strategy to meet the challenges posed by rapidly rising imports of FDA- regulated products and a complex global supply chain.The report, titled "Pathway to Global Product Safety and Quality," calls on the agency to transform the way it conducts business and to act globally in order to promote and protect the health of U.S. consumers.According to the report, the FDA will partner with its counterparts worldwide to create global coalitions of regulators focused on ensuring and improving global product safety and quality. The coalitions of regulators will develop international data information systems and networks, and increase the regular and proactive sharing of data and regulatory resources across world markets.The FDA will build in additional information gathering and analysis capabilities with an increased focus on risk analytics and information technology. It increasingly will leverage the efforts of public and private third parties and industry and allocate FDA resources based on risk."FDA regulated imports have quadrupled since 2000. The FDA and our global regulatory partners recognize this new reality and realize we must work proactively and collaboratively to address the challenges we face," FDA Commissioner Margaret Hamburg said in a statement. "The FDA must further collaborate and leverage in order to close the gap between our import levels and our regulatory resources. This report is an important step in ensuring we are able to fulfill our critical public health mission."

BEIJING, July 26 (Xinhuanet) -- The breast cancer is more deadly to black women than to whites, a new study found.This finding was published online Monday on the "Journal of Clinical Oncology" in the United States.The study was done by the City of Hope, a Comprehensive Cancer Center in Duarte, California.The researchers collected data from more than 4,500 U.S. women in the 35-64 age group who were diagnosed with breast cancer.With the passing of  more than eight years, the researchers found the black women have a three times death rate than white women, after taking obesity and other diseases into account."It’s been long known that breast cancer in African-American women is a far less common disease than in white women. But when it occurs, it seems to be more aggressive and harder to treat," said Dr. Lisa Carey of the University of North Carolina’s Lineberger Comprehensive Cancer Center.But why the situations varied by race, scientists are still exploring the answer.