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HAIKOU, Jan. 28 (Xinhua) -- China's aviation authorities on Friday started to allow helicopters to fly in low-altitude airspace over the tourist island of Hainan on a trial basis for the first time. The aim is to eventually open a part of the country's tightly-controlled airspace to private aircraft.Four helicopters were manned by eight pilots from Shanghai-based Zhengyang Investment Group, a leading domestic firm in the general aviation industry. They are expected to conduct test flights in the sky, 1,000 meters above the ground in Hainan in the next two months.The flight test will collect data for low-altitude flying and test the ground control system's response to emergencies, said Zou Jianming, chairman of Zhengyang Investment Group.Hainan is the first place in China to conduct test flights of private aircraft in low-altitude airspace, said Jiang Sixian, deputy governor of the province. Domestic and foreign firms are both welcome to invest in Hainan's general aviation sector to develop world-class tourism here.China's low-altitude airspace is controlled by the Air Force and the Civil Aviation Administration of China (CAAC). Every private aircraft flight needs approval, and the procedure can take from one day up to a week.But last November, the State Council and the Central Military Commission said that part of the low-altitude airspace would be opened to promote the country's general aviation sector, including the purchase and use of private planes.General aviation refers to the part of the aviation industry that excludes flights for military, law enforcement and public transport. China has only 900 aircraft, 80 airports and fewer than 10,000 pilots in the general aviation segment.The market for general aviation in China is valued at only 13 billion yuan (1.98 billion U.S. dollars) but is expected to grow by 15 percent annually until 2020, Hainan aviation officials said.

WASHINGTON, May 20 (Xinhua) -- Two U.S. astronauts conducted the first of four spacewalks for space shuttle Endeavour's STS-134 mission on Friday morning, the U.S. National Aeronautics and Space Administration (NASA) said.According to the U.S. space agency, Endeavour's mission specialists Andrew Feustel and Greg Chamitoff completed the six-hour, 19-minute spacewalk at 9:29 a.m. EDT (1329 GMT). They successfully installed antennas for the External Wireless Communication system, routing cables, setting up the antenna, installing handrails, and connecting power cables.Because of a carbon dioxide sensor failure in Chamitoff's spacesuit, flight controllers limited his spacewalk time to about six hours 20 minutes, 10 minutes less than the planned six hours and 30 minutes. There was no indication his suit's carbon dioxide levels would rise. However, they deferred tasks to remove a micrometeoroid debris shield to access and attach some of the connection points.This was the 245th spacewalk conducted by U.S. astronauts. It was Feustel's fourth spacewalk for a total time of 27 hours and 17 minutes, and Chamitoff's first.Endeavour lifted off on Monday morning from Kennedy Space Center in Florida, to deliver to the International Space Station a 2-billion-dollar, multinational particle detector known as the Alpha Magnetic Spectrometer (AMS).AMS, a particle physics detector, is designed to search for various types of unusual matter by measuring cosmic rays. Its experiments are designed to help researchers study the formation of the universe and search for evidence of dark matter, strange matter and antimatter.

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.

UNITED NATIONS, Feb. 11 (Xinhua) -- China Friday urged the United Nations and Security Council to give more attention to Africa and called on the international community to provide greater support to the region in order to maintain peace and security. Addressing an open debate of the UN Security Council on the interdependence between security and development, Li Baodong, China's permanent representative to the UN said the inter-linkages between peace and development are most pronounced in Africa. There will be no world prosperity and stability without peace and development in the region. He called on the international community to provide greater support and more assistance to regional countries, AU and other regional and subregional organizations to maintain African peace and security. Li stressed that security and development are mutually linked and reinforcing. To safeguard peace and promote development, the international community should increase development input and eradicate root causes of conflicts. "Poverty and underdevelopment are the major causes for triggering conflicts and breeding terrorism. The developed countries should further increase its development aid, provide debts relief to developing countries, open up markets, transfer technology and help the developing countries to achieve the Millennium Development Goals as soon as possible." Li said development can be anchored only in an environment free from war and turbulence. The UN and Security Council should vigorously promote peaceful culture, encourage and support peaceful resolutions to disputes through dialogue, consultations and good offices. In addition, greater emphasis should be given to peacebuilding so as to prevent relapse into conflicts. "In post-conflict countries and regions, simultaneous progress should be made in the fields of politics, security and development throughout development and reconstruction process, " said Li. "Capacity building should be prioritized in the post-conflict countries to enhance governance, provide basic services, advance development and reconstruction so that the people could enjoy peaceful 'dividend' quickly. This is conducive to consolidating political reconciliation process and stabilizing post-conflict situations, " he said.