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LOS ANGELES, May 9 (Xinhua) -- Drinking alcohol may raise the likelihood among teenagers to spend more time on computers, a new study suggests.The study, conducted by researchers at Weill Cornell Medical College, was based on a survey of 264 teenagers, aged 13 to 17.Results showed that compared with teens who did not report drinking, those who drank alcohol in the last month used a computer more hours per week for non-school-related activities, including the use of social networking sites.Drinking was also linked to more frequent social networking and listening to and downloading music, according to the study published Monday in the on-line edition of the journal Addictive Behaviors.However, there was no demonstrated link between alcohol use and computer use for school work, neither there was strong link between video games and drinking or on-line shopping and drinking."While the specific factors linking teenage drinking and computer use are not yet established, it seems likely that adolescents are experimenting with drinking and activities on the Internet," said Dr. Epstein, assistant professor of public health at the college."In turn, exposure to on-line material such as alcohol advertising or alcohol-using peers on social networking sites could reinforce teens' drinking."Children are being exposed to computers and the Internet at younger ages. For this reason it's important that parents are actively involved in monitoring their children's computer usage, as well as alcohol use."Teenagers typically first experiment with alcohol at age 12 or 13, according to the study.Family risk factors include lax parental supervision and poor communication, family conflicts, inconsistent or harsh discipline and a family history of alcohol or drug abuse."According to a national study conducted by the Pew Internet and American Life Project, more than half of parents of teenagers had filters installed on the computers their child uses to block content parents find objectionable, yet many parents do not use any form of parental monitoring, particularly for older teens," Epstein said.

WASHINGTON, Jan. 20 (Xinhua) -- Officials from China and the United States on Thursday signed a new agreement to support panda breeding, research and conservation efforts by the two countries, an exciting news for numerous American fans of the cute animals.Zang Chunlin, Secretary General of the China Wildlife Conservation Association, and Dennis Kelly, Director of the U.S. Smithsonian's National Zoo, signed the Giant Panda Cooperative Research and Breeding Agreement.Under the agreement, a pair of giant pandas, Mei Xiang and Tian Tian, will remain at the National Zoo in Washington D.C. for five more years.Also in attendance at the signing ceremony at the National Zoo was Chen Naiqing, wife of China's Ambassador to the U.S. Zhang Yesui, U.S. Secretary of the Interior Ken Salazar and Mary Kaye Huntsman, wife of U.S. Ambassador to China Jon Huntsman.On behalf of the Chinese embassy and Ambassador Zhang, Chen expressed appreciation to the National Zoo for taking care of these giant pandas and to all American people for their love for them."Although the weather is cold today, the friendship between our people keeps us warm," she said. "I am confident that through joint efforts, our cooperation will grow, our friendship will deepen, and the future will be even brighter."The first two years of the new agreement, effective immediately through Dec. 5, 2015, include a cooperative study involving reproductive experts from the China Conservation and Research Center for the Giant Panda in Wolong and the Smithsonian's Conservation Biology Institute to oversee the breeding of Mei Xiang and Tian Tian."I am proud that this agreement not only ensures that visitors to the zoo will continue to be able to visit and learn about these beautiful animals, but also provides a strong platform for improving the conservation of wild pandas and their habitat in China," said Salazar.He said those giant pandas have "long symbolized the close partnership the United States has with China as we work together to conserve and recover one of the world's most endangered species in the wild."Mei Xiang and Tian Tian have lived at the Smithsonian's National Zoo since Dec. 6, 2000. Both pandas were born in Wolong, China and had parents that were wild born. Mei Xiang, which means "beautiful fragrance," will turn 13 on July 22 and Tian Tian, meaning "more and more," will turn 14 on Aug. 27.The current pair has not produced a cub since 2005, when Tai Shan, a male, was born. Tai Shan went back to China in February, 2010.

WASHINGTON, March 25 (Xinhua) -- Researchers at the University of Colorado (CU) and the Harvard University have found that people living at higher altitudes have a lower chance of dying from ischemic heart disease and tend to live longer than others, according to a study published this week in the Journal of Epidemiology and Community Health.They spent four years analyzing death certificates from every county in the United States. They examined cause-of-death, socio- economic factors and other issues in their research.They found that of the top 20 counties with the highest life expectancy, eleven for men and five for women were located in Colorado and Utah. And each county was at a mean elevation of 5, 967 feet above sea level. The men lived between 75.8 and 78.2 years, while women ranged from 80.5 to 82.5 years.Compared to those living near sea-level, the men lived 1.2 to 3. 6 years longer and women 0.5 to 2.5 years more."If living in a lower oxygen environment such as in our Colorado mountains helps reduce the risk of dying from heart disease it could help us develop new clinical treatments for those conditions," said Benjamin Honigman, professor of Emergency Medicine at the CU School of Medicine. "Lower oxygen levels turn on certain genes and we think those genes may change the way heart muscles function. They may also produce new blood vessels that create new highways for blood flow into the heart."Another explanation, he said, could be that increased solar radiation at altitude helps the body better synthesize vitamin D which has also been shown to have beneficial effects on the heart and some kinds of cancer.Despite these numbers, the study showed that when socio- economic factors, solar radiation, smoking and pulmonary disease were taken into account, the net effect of altitude on overall life expectancy was negligible.Still, Honigman said, altitude seems to offer protection against heart disease deaths and may also play a role in cancer development.Colorado, the highest state in the nation, is also the leanest state, the fittest state, has the fewest deaths from heart disease and a lower incidence of colon and lung cancer compared to others.

DAVOS, Switzerland, Jan. 29 (Xinhua) -- China is ready to push the decade-long Doha Round negotiations for a final success, Chinese Minister of Commerce Chen Deming said here on Saturday.Speaking at the World Trade Organization (WTO) Mini-Ministerial Meeting which brought together representatives from over 20 major trading powers, Chen said that China is ready to collaborate with other WTO members in a practical and proactive manner so as to draw a successful conclusion of the Doha Round talks by the end of 2011.A rapid conclusion of the negotiations, Chen said, will be beneficial to global economic recovery, which is to the interest of all.The commerce minister acknowledged the year 2011 as a "window of opportunity," albeit a narrow one."China will give support to the roadmap proposed by WTO Director-General Pascal Lamy," he said, adding that the country is willing to act vigorously to push forward the negotiation process.To ensure that an early final deal could be in reach, Chen said, parties should set goals in a practical manner, in accordance with the ambition level, and stick to what has been achieved as well as the Doha Development Agenda (DDA), while focusing primarily on pending issues.Held on the sidelines of the annual World Economic Forum, the WTO Mini-Ministerial Meeting is an annual event under the auspices of the Swiss Federal Government.Chen on Friday also joined discussions with his counterparts from the emerging club -- India, Brazil and South Africa, before attending the trade G7 meeting, consisting of Australia, Brazil, China, the European Union, India, Japan and the United States.

BEIJING, Jan. 30 (Xinhua) -- Chinese Vice Premier Li Keqiang Sunday urged scientists to learn from foreign experiences and increase their participation in international cooperation in polar and oceanic exploration.Li made the remarks after meeting with members of China's 27th Chinese Antarctic expedition team, the 22nd oceanic expedition, and scientists working in the country's Antarctic and Arctic stations via video and telephone.Li said many countries nowadays attached great importance to polar and oceanic exploration, and international competition had grown in promoting the peaceful utilization of these resources.Chinese Vice Premier Li Keqiang (R, front) shakes hands with a senior Chinese explorer in Beijing, capital of China, Jan. 30, 2011. Li conveyed Spring Festival greetings while meeting with members of China's 27th Chinese Antarctic expedition team, the 22nd oceanic expedition, and scientists working in the country's Antarctic and Arctic stations via video and telephone on Sunday."We are confident and capable of constantly improving our working conditions to conduct polar and oceanic exploration, and winning the initiative in this sector's future development," Li said.Li said the country would work to promote its marine economy and safeguard marine ecosystems, as well, and make full use of the achievements made in explorations to make reasonable development and utilization of ocean resources.China would also ensure the security of ocean passages, and safeguard its marine rights and interests, the vice premier said.Li also conveyed New Years greetings to the scientists for conducting research away from their homeland and families, and applauded their contribution to the country's progress in polar and oceanic research areas.