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BEIJING, Oct. 18 (Xinhuanet) -- Some seaweeds can kill the reef-building corals around them by emitting anti-coral chemicals, a new study found.The study was published Monday in the online edition of the journal Proceedings of the U.S. National Academy of Sciences (PNAS).The researchers investigated the interactions between eight different species of seaweed and three species of coral growing in the waters nearby the Fiji Islands, and identified a class of anti-coral organic compounds known as terpenes.These chemicals, found on the surfaces of several species of seaweed, can kill the coral by suppressing its photosynthesis.The finding suggests that the living space competition with seaweeds could be a factor of the coral's worldwide decline.Plant-eating fish normally controls seaweed growth on coral reefs, but the populations of these consumers are declining by the overfishing, which eventually resulted in the seaweed's dominant position, according to the researchers.Despite overfishing, pollution and warming oceans are also the contributors to coral's worldwide decline, said Jennifer Smith, a marine ecologist at the University of California, San Diego.

WASHINGTON, Dec. 2 (Xinhua) -- The U.S. Justice Department Friday approved Google's 400 million dollar acquisition of Admeld, a company that provides an online advertising platform for publishers.The Justice Department concluded that it was "not likely to substantially lessen competition in the sale of display advertising."Google operates the largest Internet search engine in the world and one of the largest display advertising platforms. It had revenues of about 29 billion dollars in 2010, most of which came from ads revenue.Admeld, with annual revenue of 30 million dollars, offers technology services to Internet publishers that help them boost revenue by optimizing ads display from hundreds of sources.Google is expected to grab 9.3 percent of online display advertising spending in the U.S. this year, up from 8.6 percent last year, making it the No. 3 provider, according to the digital intelligence company Emarketer.The No. 1 position will be taken by Facebook with its share increased to 16 percent up from 12 percent a year ago, while Yahoo! will slip slightly to 13 percent, said Emarketer.

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.

BEIJING, Dec. 24 (Xinhua) -- A senior Chinese official has urged to improve work in the country's judicial administrative departments.Zhou Yongkang, a member of the Standing Committee of the Political Bureau of the CPC Central Committee, made the remarks at a meeting honoring excellent individuals and collectives in the judicial administrative sector in the past five years.Zhou commended the contributions that the judicial administrative departments have made to social stability, the building of socialist legal system, and the development of the society and economy, asking those being honored to make persistent efforts to serve the people.Zhou urged the judicial administrative organs at all levels to make new progress in serving the development by enhancing law awareness and providing high quality legal services.He also called for building grassroots mediation organizations that people can rely on, in order to resolve disputes in the grassroots and nip them in the bud.Labor education and rehabilitation in jails, as well as the community rehabilitation programs that can help law offenders successfully return and reintegrate into society, should be further improved, Zhou said, adding that it will also help enhance the social harmony by preventing repeated crimes.

BEIJING, Nov. 27 (Xinhua) -- A government official on Sunday refuted an accusation that discriminations widely exist in the country's civil service recruitment process.Nie Shengkui, director of the examination and recruitment department of the State Administration of Civil Service (SACS), said that the recruitment process is always based on the principles of justice and fairness, which has promoted the upward mobility of people from the grassroots.The ratio of recruited male and female applicants is around 6 to 4 in last year, equal to the ratio of the male and female applicants, and more than 92 percent of the recruited are from the ordinary families in the grassroots, including 29 percent from the rural areas, according to Nie.Nie's words came after a survey report published earlier last week, accusing the authorities of having discriminatory requirements in civil servants recruitment.Conducted by the Constitutionalism Research Institute of China University of Political Science and Law, the survey report said that without publicly acknowledging any form of discrimination, many public offices don't hesitate to hide their preferences on age, gender, education and state of health in recruitment.Nie defended that it is necessary to set some requirements in the recruitment in a bid to guarantee the future civil servants can carry out there duty competently."Civil servants recruitment is a process of choosing talents for the government to manage the country, not for promoting employment," said Nie, "so there is nothing to do with employment discriminations."Chinese college grads are usually enthusiast about finding jobs within government branches, especially at a time when people are trying to secure a stable future amid a troubled global economy.A total of 970,000 applicants took the general exam of the recruitment on Saturday and Sunday, They will compete for only 18,000 posts in central government departments and their local branches.

来源：资阳报