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Chinese officials said water quality was improving in the country's third-largest lake, choked by a polluted slick of algae, but experts warned that tap water in the area was still not safe, state media reported on Saturday. Taihu Lake, in the southern province of Jiangsu, has been struck by a foul-smelling canopy of algae that left tap water undrinkable for more than 2.3 million residents of nearby Wuxi and prompted a run on bottled water at local supermarkets. Residents said the government was telling them it was safe to drink boiled water, but complained that it still had an unappealing green film on top. Environment experts said it was unlikely to be fit to drink. "Although quality of the water supply has improved significantly on Friday and now it is safe for washing hands or clothes, it still takes some time to become drinkable," the Zhang Xiaojian, an environment specialist at Tsinghua University in Beijing said. Algae blooms can develop in water that is rich in nutrients, often because of run-off from heavy fertiliser use, industrial waste and untreated sewage. Officials have invoked emergency measures, diverting the Yangtze river and seeding clouds to provoke rainfall, to try to flush out the algae. Heavy rainfall is also expected in the area in the next few days. Residents of Wuxi said the algae, which they said smelt like rotten meat, was driving a roaring trade at McDonald's and KFC fast-food outlets in the city. "Here they fry food," said a company manager named Zhao as he queued at KFC. "I can't eat dumplings or noodles because they would be cooked in water and it's too expensive to use bottled water."

The U.S. National Academy of Sciences announced on Tuesday the election of 72 new members and 18 foreign associates in recognition of their distinguished and continuing achievements in original research. The election was held this morning during the business session of the 144th annual meeting of the academy, and brought the organization's total number of active members to 2,025. Foreign associates are non-voting members of the academy. The 18 newly elected, from 12 different countries, brought the total number of foreign associates to 387. Two Chinese scientists, Zhang Qifa and Li Aizhen, were among the new foreign associates. Professor Zhang is the director of National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, in central China's Wuhan. Li is from the Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences. The U.S. National Academy of Sciences is a private organization of scientists and engineers dedicated to the advance of science and its use for the general welfare. It was established in 1863 by a congressional act signed by Abraham Lincoln. The act calls on the academy to act as an official adviser to the federal government, upon request, in any matter of science or technology

Almost 85 percent of Chinese people share just 100 surnames, with Wang, which literally means "king", being the most popular, the Xinhua news agency said on Tuesday. There are 93 million Wangs in China, followed closely by 92 million people with the family name Li and 88 million called Zhang, Xinhua said, citing newly-announced calculations by the Ministry of Public Security. Another seven common names -- including Chen, Zhou and Lin -- have at last 20 million members each, it added. Chinese family names can be traced back thousands of years and people generally feel a closeness to those with the same surname. But there are also some family names which are only used by a very few people, such as Guo, meaning to "cross over", and Mu, which means "mother".

A regional pilot scheme designed to provide basic medical insurance for all urban citizens will go nationwide this year, a senior labor official said Tuesday.A further 229 cities will be added to the scheme this year, Wang Dongjin, former vice-minister of labor and social security and head of a team of experts involved with the pilot, said at a national teleconference.By the end of the year, the scheme will cover 317 cities, Wang said.Dubbed by the public as a lifesaving project, the scheme has been well received by residents in the 88 pilot cities and has brought financial and medical relief to all beneficiaries, he said.Launched in September, the program, as of December, covered 40.68 million people with 620,000 of them already benefiting from it, Wang said.With an average annual premium of 236 yuan () for adults and 97 yuan for children, the scheme will be extended to at least 240 million non-working urban residents, such as children, students, the elderly, the disabled and the unemployed.These groups have been given access to the insurance plan through agents at schools and neighborhood communities, Wang said.For the disabled, home visits will be offered to help them sign up, he said.The premiums are paid by households, instead of individuals, he said. And the government will give subsidies annually to each participant, with more going to families of low-income earners and the disabled.Wang cited a recent survey showing 68 percent of those insured giving it the thumbs up.The poll also found that, between October and December, the number of patients who refused medical treatment for fear of high costs decreased by 10 percent.While subsidized by both central and local governments, the insurance scheme presents both personal and governmental liabilities and cannot be considered a welfare program in its entirety, Vice-Premier Wu Yi said at the conference.Personal contributions to enroll in the scheme cannot be lowered, she said.With the new scheme, China now has a three-layer medicare system, including the health insurance plan for urban employees launched in 1998 and the New Rural Cooperative Medical Scheme launched in 2003.Among those already covered by the medical scheme are more than 10.8 million urban residents in Jiangsu province, almost 4.7 million people in Anhui province, and in excess of 2.2 million urban residents in Gansu province.

China, the world's largest tobacco producer and consumer, will ban all forms of tobacco promotion by January 2011.A ban on tobacco advertising has been in place since 1996, but firms have managed to sidestep the rules and promote their brands in other more subtle ways such as sponsoring sporting events, or using their logos without mentioning "cigarettes" on television, radio and in newspapers and magazines.Xu Guihua, vice-president of China Tobacco Control Association, made the landmark announcement on Monday at a seminar in Guangzhou, capital of Guangdong Province. She said the country is committed to fulfill its obligations to the World Health Organization (WHO) Framework Convention on Tobacco Control.China formally became a member of the convention last January.Xu said the nation lags behind other countries in efforts to control the use of tobacco, and the biggest problem is the lack of national regulations banning smoking in public areas.To date, fewer than half the cities have framed rules on smoking bans in some public spaces. Efforts to ban smoking in other areas such as karaoke parlors and restaurants have been stifled by unwilling owners and managers who fear a loss of business.Figures from the Ministry of Health show that China has an estimated 350 million smokers, almost a third of the world's 1.1 billion smokers.Cigarette makers spent more than 1.6 billion yuan (2 million) to promote their brands last year, according to China Youth Daily.In 2005 the government collected 240 billion yuan (.7 billion) in tobacco taxes.According to the WHO convention, tobacco products must carry prominent health warnings on the packaging.This measure needs to be implemented within three years from when China signed the convention.Within five years, China must fulfill it commitment to comprehensively ban all forms of tobacco advertising, promotion and sponsorship.Last year, authorities found there were 231 instances of tobacco promotion considered illegal. The violators were fined a mere total of 1.23 million yuan (2,780).A senior official from China's State Tobacco Monopoly, who did not want to be named, said the administration was "actively taking measures" to fulfill its obligations to the convention.Regulations to further control tobacco promotion on the Internet were expected shortly, he said.Despite a willingness to cooperate, the official said tobacco producers were lawful enterprises, and it was not fair to "butcher the industry"."There is market demand for tobacco, people can choose if they smoke or not," he told China Daily.He said tobacco firms are using scientific and technological improvements in tobacco products to "lower" the harmful effects of smoking.However the WHO has long argued there is no way to make smoking healthier.Yang Yan, a researcher with Chinese Center for Disease Prevention and Control, said 12 percent of deaths in China are caused by tobacco related illnesses, and by 2025, that figure will climb to 33 percent.