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WASHINGTON, Dec. 22 (Xinhua) -- The journal Science on Thursday chose the HPTN 052 clinical trial, an international HIV prevention trial as the 2011 Breakthrough of the Year.The study found that if HIV-infected heterosexual individuals begin taking anti-retroviral medicines when their immune systems are relatively healthy as opposed to delaying therapy until the disease has advanced, they are 96 percent less likely to transmit the virus to their uninfected partners. Findings from the trial, first announced in May, were published in the New England Journal of Medicine in August.The study was funded by the U.S. National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health."The HPTN 052 study convincingly demonstrated that anti- retroviral medications can not only treat but also prevent the transmission of HIV infection among heterosexual individuals," said NIAID Director Anthony Fauci in a statement. "We are pleased that Science recognized the extraordinary public health significance of these study results."Science's list of nine other ground-breaking scientific achievements from 2011 include:The Hayabusa Mission: After some near-disastrous technical difficulties and a stunningly successful recovery, Japan's Hayabusa spacecraft returned to Earth with dust from the surface of a large, S-type asteroid. This asteroid dust represented the first direct sampling of a planetary body in 35 years, and analysis of the grains confirmed that the most common meteorites found on Earth, known as ordinary chondrules, are born from these much larger, S-type asteroids.Unraveling Human Origins: Studying the genetic code of both ancient and modern human beings, researchers discovered that many humans still carry DNA variants inherited from archaic humans, such as the mysterious Denisovans in Asia and still-unidentified ancestors in Africa. One study this year revealed how archaic humans likely shaped our modern immune systems, and an analysis of Australopithecus sediba fossils in South Africa showed that the ancient hominin possessed both primitive and Homo-like traits.Capturing a Photosynthetic Protein: In vivid detail, researchers in Japan have mapped the structure of the Photosystem II, or PSII, protein that plants use to split water into hydrogen and oxygen atoms. The crystal-clear image shows off the protein's catalytic core and reveals the specific orientation of atoms within. Now, scientists have access to this catalytic structure that is essential for life on Earth -- one that may also hold the key to a powerful source of clean energy.Pristine Gas in Space: Astronomers using the Keck telescope in Hawaii to probe the faraway universe wound up discovering two clouds of hydrogen gas that seem to have maintained their original chemistry for two billion years after the big bang. Other researchers identified a star that is almost completely devoid of metals, just as the universe's earliest stars must have been, but that formed much later. The discoveries show that pockets of matter persisted unscathed amid eons of cosmic violence.

BEIJING, Nov. 19 (Xinhua) -- China on Saturday again called for appropriately addressing the alleged plot to assassinate the Saudi Arabian Ambassador to the United States.Foreign Ministry Spokesman Liu Weimin made the remarks in a written statement in Beijing.The UN General Assembly on Friday adopted a resolution titled "Terrorist Attacks on Internationally Protected Persons," expressing deep concern over the assassination plot and calling on Iran "to comply with all of its obligations under international law."Liu said China abstained from the vote on the resolution, because the case is highly complicated and sensitive at present and relevant parties still have different views on the issue.He said any conclusion or action must be based on comprehensive, impartial, objective and transparent investigation and substantial evidence."Before facts are checked out, parties should adopt a prudent attitude, refrain from jumping to conclusions, and avoid actions that may complicate and worsen the situation," he said.He said China hopes those countries concerned will continue to appropriately address the issue through dialogue and make joint efforts to maintain peace and stability in the Middle East and the Gulf Region.Liu also reaffirmed that China opposes all forms of terrorism, and always stands for compliance with international law and the basic norms governing international relations in handling state-to-state relations as well as the effective protection of the safety of diplomatic personnel.Chinese Permanent Representative to the United Nations Li Baodong previously addressed the UN General Assembly on Friday in order to explain China's position on the issue after he abstained from voting on the draft resolution.

BAIKONUR, Kazakhstan, Nov. 9 (Xinhua) -- Russia's Phobos-Grunt probe and China's Yinghuo-1 satellite were launched from the Baikonur cosmodrome in Kazakhstan on a Zenit-2SB rocket at 00:16 am Moscow time Wednesday (2016 GMT Tuesday).The main aim of the Phobos-Grunt unmanned mission is to bring back the first ever soil sample from Phobos, the larger of Mars' two moons.Russia had spent about 5 billion rubles (about 161 million U.S. dollars) preparing for the three-year mission, which would include drilling Phobos' surface and returning 200 grams of soil back to Earth, according to Russian state space agency Roscosmos.The mission would also collect bacteria samples for two Russian and one U.S. biological experiments.In the meantime, China's first Mars probe Yinghuo will go into orbit around Mars and observe the planet itself.Phobos-Grunt is planned to reach Mars in 2012, then deploy its lander for Phobos in 2013 and return the soil sample back to Earth in August 2014.The Chinese probe, which would not land on Mars nor return to the Earth, is expected stay permanently in the space and communicate with the ground control directly via satellites.The Chinese probe is 75 cm long, 75 cm wide and 60 cm high. It weighs 115 kilograms and was designed for a two-year life to discover why water disappeared from Mars and shed light on other environmental changes on the planet.Victor Khartov, chief designer and director general of Lavochkin Research & Production Association, told Xinhua that the three-year mission is highly complicated."It consists of eight sub-missions: launch, travel to Mars vicinities, separation with the Chinese probe YH-1, landing on Phobos, soil collection, launch from Phobos, way back to the Earth, and final landing. Failure of any one of them could doom the entire project," he said.The launch of Phobos-Grunt and Yinghuo-1, originally scheduled for October 2009 on a Russian carrier rocket, has been postponed until 2011 due to "technical reasons" on the Russian side.

BEIJING, Nov. 30 (Xinhua) -- China's efforts to fight AIDS are impressive and its experience can be shared, according to Michel Sidibe, executive director of the Joint United Nations Programme on HIV/AIDS (UNAIDS)."We have seen progress in terms of new infections. The number of people going into treatment is increasing and the mortality rate is going down very quickly in China," Sidibe said during an interview with Xinhua on Wednesday.Sidibe said he was impressed by the country's political leadership and commitment to controlling AIDS.According to UNAIDS, the country has reported a 60-percent reduction in deaths due to AIDS over the past eight years.New HIV infection cases in China have been reduced from 70,000 people annually in 2005 to around 48,000 in 2011, according to the country's health department."However, China's success will not only be measured by what it has done for the Chinese people," Sidibe said.China has successful experience in reducing new HIV infections among intravenous drug users, which can be shared with the rest of the world, particularly east Europe and south Asia where HIV infections among drug abusers is a major challenge, he said.Sidibe suggested that the country should work with the rest of the developing world, particularly Africa, in fighting AIDS.A partnership between China and Africa will make a "big, big difference" in reducing AIDS mortality rates and introducing new technology and perspectives in Africa, said the official who had worked for UN in several African countries for more than two decades.Admitting the challenges of funding AIDS control programs during the current global economic downturn, Sidibe called for global solidarity and increasing shared responsibilities among countries."It is a critical moment now. It is not a time to stop investment but to redouble our efforts, to make sure that we will continue to make progress in the fight against HIV," Sidibe said."Getting to Zero" has been chosen as the main theme of World AIDS Day for the next five years, referring to UNAIDS' vision of "zero new HIV infections, zero discrimination and zero AIDS-related deaths."Sidibe met with Li Congjun, president of the Xinhua News Agency, on Wednesday before the interview. The agency has launched a global media campaign in cooperation with UNAIDS to raise public awareness about HIV/AIDS."The partnership (with Xinhua) is not only about writing news about HIV. It is about helping people to change their attitude and make decisions to help protect themselves," Sidibe said.

TOKYO, Jan. 24 (Xinhua) -- Japanese Foreign Minister Koichiro Gemba said Tuesday that Japan will seek to take a less inward- looking stance when it comes to diplomacy in the Asia-Pacific region.Specifically he said that Japan will look to enhance diplomatic ties with China based on mutually beneficial goals."With China, this year marks the 40th anniversary of normalizing diplomatic ties. We will aim to deepen the mutually beneficial relationship based on common strategic interests," Gemba said Tuesday in his first foreign policy speech in parliament.He went on to say that Japan plans to proactively make " concrete efforts" to strengthen its ties with China and establish more "open and multilayered networks" in the best interests of both countries.