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LOS ANGELES, April 17 (Xinhua) -- Global warming will melt all the ice in the Arctic Ocean every summer, raising earth temperatures even further, researchers at the University of California-Los Angeles (UCLA) warned.The findings, available online Sunday in the April issue of Earth and Planetary Science Letters, a leading journal in geoscience, were based on analysis of the fossilized remains of four-million-year-old mollusks, they said.Two novel geochemical techniques used to determine the temperature at which the mollusk shells were formed suggest that summertime Arctic temperatures during the early Pliocene epoch (3.5 million to 4 million years ago) may have been a staggering 18 to 28 degrees Fahrenheit warmer than today, the researchers said.And these ancient fossils, harvested from deep within the Arctic Circle, may have once lived in an environment in which the polar ice cap melted completely during the summer months, according to the researchers.Such balmy polar weather would certainly melt all the ice in the Arctic Ocean every summer, said Aradhna Tripani, an assistant professor at the UCLA's departments of Earth and space sciences."Our data from the early Pliocene, when carbon dioxide levels remained close to modern levels for thousands of years, may indicate how warm the planet will eventually become if carbon dioxide levels are stabilized at the current value of 400 parts per million," she said.The earth's temperature was raised five to nine degrees Fahrenheit merely by the absence of year-round Arctic ice, according to Tripani.The results of the study lend support to assertions made by climate modelers that summertime sea ice may be eliminated in the next 50 to 100 years, which would have far-reaching consequences for Earth's climate, she said."The Intergovernmental Panel on Climate Change identifies the early Pliocene as the best geological analog for climate change in the 21st century and beyond," said Tripati. "The climate-modeling community hopes to use the early Pliocene as a benchmark for testing models used for forecasting future climate change."

BEIJING, Jan. 26 (Xinhua) -- Chinese Premier Wen Jiabao Wednesday invited more foreign talents to continue their careers or start businesses in China, pledging better conditions for them.During a seminar with more than 20 veteran foreign experts at the Great Hall of the People a week before the Chinese New Year, Wen thanked the foreign friends for their contributions to China's achievements in 2010.Wen said 2011 is a new starting point for China's modernization, as the country implements its 12th five-year plan for economic and social development."China's development is much more associated with the world and the supply of talents than before," Wen said, adding that China will adopt a more open policy to attract overseas experts.Last year, foreign experts made more than 300,000 visits to China, according to Ji Yunshi, general director of the State Administration of Foreign Experts Affairs.

JOHANNESBURG, March 23 (Xinhua) -- Cervical cancer ranks as the second most frequent cancer among women in South Africa.Recent information from a World Health Organization (WHO) and ICO Information Center on Human Papilloma virus (HPV) and Cervical Cancer 2010 report shows that 16.84 million South African women aged 15 years and older are at risk of developing cervical cancer.Current estimates indicate that every year 5,743 women are diagnosed with cervical cancer and more than 3,000 die from the disease.About 21 percent of women in the general South African population are estimated to harbor cervical HPV infection at any given time, and 62.8 percent of invasive cervical cancers are attributed to HPV subtypes 16 or 18."Concern is growing as there appears to be an increasing epidemic of papillomavirus-induced disease involving not only the cervix but elsewhere in the female genital tract and anogenital region," said Professor Martin Hale, head of the Department of Anatomical Pathology at the University of the Witwatersrand (Wits) in Johannesburg and the National Health Laboratory Service.The South African population and people from Africa in general have high incidences of the HPV subtypes 16 or 18 according to Professor Hale. He is not entirely sure why but is of the opinion that the infection rate can be lowered."The common theory is that HPV is transmitted through sexual intercourse. If treated like a sexual disease and the necessary precautions are taken during sex the infection rate can be lowered, " Hale told Xinhua in an interview on Wednesday.HPV is also exacerbated as a result of the HIV pandemic and cause a rapid progression of premalignant dysplasia to invasive cancer in HIV positive patients.Hale believes the limited access to information and resources make it easy for the condition to thrive.However, according to Hale, a debate is still raging on how, to whom and whether the vaccine should be administered.Black women are at higher risk of contracting HPV and subsequent cervical cancer. Other risk factors that increase susceptibility include age of first intercourse, the number of children per woman, and a weakened immune system, to name a few."To avoid getting cervical cancer get the vaccine against HPV 16 and 18 infection before starting to be sexually active, have protected sex and go for regular screenings," he told Xinhua.

BEIJING, Feb. 26 (Xinhua) -- China's Ministry of Education said Friday that 34.29 million students graduated from the country's higher-learning institutions between 2006 and 2010.Xu Mei, the ministry's spokeswoman, said the number is even more than that of the graduates in the 20 years prior to 2006 combined."During the 11th five-year plan period (2006-2010), higher education has become even more accessible to the general public. Higher-learning institutions provide a strong support of brain power and human resources to the social and economic development," Xu said.The "Outline of China's National Plan for Medium and Long-Term Education Reform and Development (2010-2020)," which was publicized last year, says "the strategic goals to be attained by 2020 are to basically modernize education; shape a learning society; and turn China into a country rich in human resources."