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WASHINGTON, March 25 (Xinhua) -- Researchers at the University of Colorado (CU) and the Harvard University have found that people living at higher altitudes have a lower chance of dying from ischemic heart disease and tend to live longer than others, according to a study published this week in the Journal of Epidemiology and Community Health.They spent four years analyzing death certificates from every county in the United States. They examined cause-of-death, socio- economic factors and other issues in their research.They found that of the top 20 counties with the highest life expectancy, eleven for men and five for women were located in Colorado and Utah. And each county was at a mean elevation of 5, 967 feet above sea level. The men lived between 75.8 and 78.2 years, while women ranged from 80.5 to 82.5 years.Compared to those living near sea-level, the men lived 1.2 to 3. 6 years longer and women 0.5 to 2.5 years more."If living in a lower oxygen environment such as in our Colorado mountains helps reduce the risk of dying from heart disease it could help us develop new clinical treatments for those conditions," said Benjamin Honigman, professor of Emergency Medicine at the CU School of Medicine. "Lower oxygen levels turn on certain genes and we think those genes may change the way heart muscles function. They may also produce new blood vessels that create new highways for blood flow into the heart."Another explanation, he said, could be that increased solar radiation at altitude helps the body better synthesize vitamin D which has also been shown to have beneficial effects on the heart and some kinds of cancer.Despite these numbers, the study showed that when socio- economic factors, solar radiation, smoking and pulmonary disease were taken into account, the net effect of altitude on overall life expectancy was negligible.Still, Honigman said, altitude seems to offer protection against heart disease deaths and may also play a role in cancer development.Colorado, the highest state in the nation, is also the leanest state, the fittest state, has the fewest deaths from heart disease and a lower incidence of colon and lung cancer compared to others.

BEIJING, Feb. 19 (Xinhua) -- Chinese Vice Premier Li Keqiang has demanded the comprehensive enforcement of the country's food safety laws, urging checks to be tightened against unsafe food products.China should enhance efforts to ensure food safety, which is crucial for protecting human lives and improving people's living standards, Li said while addressing a meeting on food safety on Friday, according to an official statement issued Saturday.Also, emphasis should be directed to both special campaigns, which are launched to check against unsafe food, as well as daily supervision of food manufacturers, he said.The meeting also heard reports on food safety delivered by officials from health and agriculture ministries, the State Administration for Industry and Commerce, and the General Administration of Quality Supervision, Inspection and Quarantine.Participants at the meeting agreed that China should improve its system to monitor and assess food safety risks and enhance emergency response capabilities in this regard.They also called for improvement of food safety-related laws and regulations, as well as measures to target those core factors that affect the safety of food products.At the meeting, local government departments were asked to closely cooperate and improve the system to ensure food safety.Further, the participants agreed that authorities should publicize accurate information about food safety in a timely manner, and do more to forge a social atmosphere favorable for ensuring food safety.

BEIJING, Jan. 21 (Xinhua) -- Chinese authorities issued an order on Friday to crack down on various election irregularities prior to the upcoming election of a new term of party committees, people's congresses, governments and political consultative conferences at provincial, city, county and township levels.The Central Commission for Discipline Inspection and the Organization Department of the Communist Party of China Central Commission jointly issued the order to guarantee an honest and orderly election.The order says election irregularities, such as winning votes through pulling strings with voters, or bribing key officials who have a say on one's promotion, or manipulating votes by means of threat or deceit, are strictly frobidden.The order also prohibits officials from favoring candidates who are family members or friends, or disclosing election-related information which might alter the results of elections.China holds local elections for party committees, people's congresses, governments and political consultative conferences every five years.

NEW YORK, April 13 (Xinhua) -- New York City Mayor Michael Bloomberg and former U.S. President Bill Clinton announced on Wednesday the merger of their environmental groups, hoping to make it the most prominent climate policy organization in the world.The new organization would combine C40, a coalition of international cities run by Bloomberg, and the Clinton Climate Initiative, a project of Clinton' s philanthropic foundation, into a single organization, which will focus on population-rich cities to address global warming."I am elated by this. I think we really have a chance to make a difference," said Bill Clinton during a press conference at Gracie Mansion, adding that "together we are proving it is possible to create jobs and grow economies through reduced emissions."C40 and the Clinton Climate Initiative both seek to cut carbon emissions through programs that reduce energy use in buildings, promote mass transit and reuse greenhouse gases emitted by landfills.The newly combined organization is said to have a budget of about 15 million U.S. dollars. The group will have main offices in New York, Los Angeles and London.