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WASHINGTON, Dec. 20 (Xinhua) -- NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system, the U.S. space agency announce Tuesday.The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet's surface, but they are the smallest exoplanets ever confirmed around a star like our sun, according to NASA.The discovery marks the next important milestone in the ultimate search for planets like Earth. The new planets are thought to be rocky. Kepler-20e is slightly smaller than Venus, measuring 0.87 times the radius of Earth. Kepler-20f is slightly larger than Earth, measuring 1.03 times its radius. Both planets reside in a five-planet system called Kepler-20, approximately 1, 000 light-years away in the constellation Lyra.Kepler-20e orbits its parent star every 6.1 days and Kepler-20f every 19.6 days. These short orbital periods mean very hot, inhospitable worlds. Kepler-20f, at 800 degrees Fahrenheit, is similar to an average day on the planet Mercury. The surface temperature of Kepler-20e, at more than 1,400 degrees Fahrenheit, would melt glass."The primary goal of the Kepler mission is to find Earth-sized planets in the habitable zone," said Francois Fressin of the Harvard-Smithsonian Center for Astrophysics, lead author of a new study published in the journal Nature. "This discovery demonstrates for the first time that Earth-size planets exist around other stars, and that we are able to detect them."The Kepler-20 system includes three other planets that are larger than Earth but smaller than Neptune. Kepler-20b, the closest planet, Kepler-20c, the third planet, and Kepler-20d, the fifth planet, orbit their star every 3.7, 10.9 and 77.6 days. All five planets have orbits lying roughly within Mercury's orbit in our solar system. The host star belongs to the same G-type class as our sun, although it is slightly smaller and cooler.

WASHINGTON, Oct. 19 (Xinhua) -- A total of 25 people have been killed in 12 U.S. states in a listeria outbreak traced to Colorado cantaloupes, the U.S. Centers for Disease Control and Prevention ( CDC) said Wednesday.The number of people sickened by the tainted cantaloupes has reached 123 in 26 states, with Pennsylvania reporting its first case. One of the ill patients, a pregnant woman, suffered a miscarriage, the CDC said in a telebriefing.The listeria outbreak has been the most deadly one since 1998, according to the CDC.Listeria is a common bacterium that typically causes mild illness in healthy people, but can cause severe illness in older people and those with compromised immune systems. It also can cause miscarriages and stillbirths in pregnant women and severe infections in new babies.The CDC estimates that about 48 million people in the U.S. each year get sick from tainted food, with about 128,000 hospitalized and 3,000 deaths.

HONOLULU, United States, Nov. 13 (Xinhua) -- Chinese President Hu Jintao and leaders of other Asia-Pacific Economic Cooperation (APEC) members met in Honolulu, Hawaii, Sunday to find ways to speed up regional economic integration, free trade and investment, and economic and technological cooperation.The annual meeting, hosted by U.S. President Barack Obama in his home state, is being convened at the JW Marriott Ihilani, Honolulu, to boost regional economic integration, trade, green growth, job creation in green industries, energy security, and regulatory cooperation.President Hu is expected to speak at the meeting. He will introduce China's stand on the topics and call for "improving global economic governance, shifting the growth methods, promoting economic globalization and regional economic integration," according to Chinese diplomats.Hu will join other APEC leaders in meeting with the APEC Business Advisory Council (ABAC), which presents recommendations to APEC leaders in an annual dialogue and advises APEC officials on business sector priorities and concerns.During this year's dialogue, APEC leaders are expected to discuss regional economic integrity, the development of small- and medium-sized enterprises, food security and other issues with ABAC representatives.This year's APEC meeting convenes at a time when the global economic recovery is fraught with instability and uncertainty, and encounters growing risks and challenges.Some major economies are experiencing an economic slowdown, while in the eurozone, sovereign debt risks are rising in some countries. High inflationary pressure is a problem in emerging economies, including some in the Asia-Pacific region. Protectionism in various forms is mounting.In face of the challenges, the APEC leaders will look for effective measures to stimulate the global economy, regional economic integration, free trade and investment, and economic and technological cooperation.China hopes the APEC members will implement the economic growth strategy agreed on last year, striving to achieve a balanced, inclusive, sustainable, innovative and safe economic growth, said Wu Hailong, assistant foreign minister of China, at a press briefing last week.He said that China expects the APEC members to comprehensively promote regional trade and investment liberalization, adding that all members should fulfill their commitments and oppose all forms of trade protectionism.APEC should strengthen economic and technical cooperation to enhance the ability of the developing members to develop further, and therefore to achieve common prosperity, said the senior diplomat."APEC members generally hold positive attitudes toward U.S. proposals in various fields such as green growth, innovation policy. But some of the U.S.'s expected outcomes are beyond the capacity of the developing members, and they have expressed their difficulties and concerns," Wu said.

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.

RIYADH, Jan. 15 (Xinhua) -- Visiting Chinese Premier Wen Jiabao and Saudi Arabia's King and Prime Minister Abdullah bin Abdul-Aziz agreed on Sunday to make concerted efforts to enhance bilateral relations under a strategic framework.In their meeting, Premier Wen said Saudi Arabia is a major country in the Arab and Islamic world, which plays a significant role in regional and international affairs.He said China respects Saudi Arabia's political system, development mode as well as its culture and traditions, and is grateful for Saudi Arabia's understanding of and support for China regarding the latter's core interests and major concerns.As the world is undergoing profound changes, China is willing to strengthen coordination with Saudi Arabia on major issues, develop an all-around cooperative partnership in the energy sector, expand cooperation in trade, investment, infrastructure, high-tech, finance, security and law enforcement, so as to enrich the contents of the bilateral relations, he added.King Abdullah said that the government and people of Saudi Arabia cherish friendly feelings for China, and that he believes the strengthening of bilateral cooperation will benefit peoples of both countries.The Saudi king proposed setting up a Saudi Arabia-China high level committee to supervise the two countries' cooperation in the political, economic, cultural and security sectors. Premier Wen agreed with this proposal.On the situation in West Asia and North Africa, the visiting Chinese premier said China respect the choice of the peoples in those countries, understand and support their appeal for reforms, and back the role of regional bodies like the Arab League in maintaining stability.For his part, King Abdullah noted it was the objective of Saudi Arabia's foreign policy to maintain regional peace and stability. Saudi Arabia and China enjoy a high level of mutual trust and share similar views on many issues, he said, adding that the Saudi side wishes to step up consultation and coordination with China.Premier Wen has also met with top Saudi leaders, Secretary General of the Organization of Islamic Cooperation Ekmeleddin Ihsanoglu, and Secretary General of the Gulf Cooperation Council Abdullatif al-Zayani.In a joint statement, the two sides hailed Premier Wen's visit to Saudi Arabia as a complete success, which will contribute to their long-term friendly cooperative relations.The statement said both countries were satisfied with the progress made in bilateral cooperation, and pledged to further enhance relations within the framework of strategic relationship, so as to benefit the two peoples and contribute to regional and world peace, stability and development.The two countries agreed in the document to conduct more high-level exchanges of visits, and to expand trade, investment and cooperation in a wide range of areas. The Saudi side also reiterated its adherence to the one-China policy.Wen arrived in Saudi Arabia Saturday evening after an official visit to Nepal.After his stay in Saudi Arabia, the Chinese leader will continue his visit to the United Arab Emirates and Qatar.