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BEIJING, July 13 (Xinhuanet) -- Gasoline powers vehicles all around the world, but a sick Chinese man has been drinking the sticky liquid for 42 years under the illusion that it can relieve his physical pain.Chen Dejun, 71, lives by himself in shabby thatched cottage on a hill in Shuijiang township, Nanchuan district of southwest China's Chongqing municipality. The short and bony man said he drinks 3 to 3.5 kilograms of gasoline every month, which he buys from a station at the foot of the hill.Chen is known locally as a stonecutter and master of weaving bamboo with a good business sense. But he’s also known for his undying love of drinking gasoline.He developed the habit back in 1969 when he suddenly began coughing and felt pain in his chest. Seeing no progress after trying some medicine, he took up the folk remedy of drinking kerosene, Chongqing Evening News reported.It turned out to be helpful for him after the first sip, and he since became addicted to kerosene. Then he moved on to gasoline.Chen said it is hard to calculate exactly how much gasoline he has swallowed throughout his life, but the newspaper reported Chen has consumed an estimated 1.5 tons over the past 42 years.Chen's wife Yuan Huibi and their three sons tried many times to stop Chen's addiction to gasoline, but those efforts only made the family relations tense. Eight years ago Chen moved to the cottage to live alone.Sources from Honglou Hospital in Chongqing said Chen‘s health is fine despite having symptoms of emphysema. Chen refused to receive free check ups from the hospital.Feng Fu, an associate professor with the Second Hospital Affiliated to Chongqing Medical University, said Chen may have developed some resistance to gasoline. Otherwise, Feng said, it would be impossible for Chen to live. Feng also said gasoline may only work as anaesthetic for Chen but can’t cure his pain.

BEIJING, Sept. 23 (Xinhua) -- A defunct U.S. satellite is expected to crash down to Earth Friday, with nobody knowing where or when exactly it will hit. This was avoidable, a Chinese expert said Thursday.Pang Zhihao, a researcher from the Chinese Research Institute of Space Technology, told Xinhua that the crash could have been avoided had the satellite been put into a higher orbit, or manipulated to drop in the South Pacific when it had abundant fuel. It would pose no threat to Earth if these measures had been taken.NASA's tumbling, 5,900 kg Upper Atmosphere Research Satellite, or UARS, is the first of such man-made space vehicles that have been launched into outer space according to the agency's Mission to Planet Earth. The mission was launched in the 1990s.The mission is designed to provide data for better understanding Earth's upper atmosphere and the effects of natural and human interactions on the atmosphere.The satellite was deactivated in 2005 as it ran out of fuel and was left orbiting Earth like a big piece of space junk.There are other cases of defunct satellites. The European Space Agency said earlier its observation satellite ERS-2 has run out of fuel and is deorbiting. It would therefore also crash sooner or later.Pang said all countries which are operating space vehicles should take care of their own spacecrafts so that they won't pose any danger.The expert also said that the public need not worry too much.Pang said most spacecrafts will be incinerated upon re-entering Earth's atmosphere, and the debris will mostly likely fall into the ocean or hit an uninhabited area. In addition, a debris tracker is able to give a comparatively accurate prediction where the craft will fall about two hours before it hits Earth, giving residents, if there are any, time to evacuate.He added that there are several ways to minimize the threat of decommissioned spacecrafts, like putting them into higher orbits and crashing them into designated waters.Scientific progress would possibly bring about more ways of dealing with tumbling satellites. Scientists have already been trying to build spacecrafts with degradable materials so that they can self-destruct when re-entering Earth's atmosphere.

WASHINGTON, June 14 (Xinhua) -- Eating a low-carbohydrate, high- protein diet may reduce the risk of cancer and slow the growth of tumors already present, according to a study published Tuesday in Cancer Research, a journal of the American Association for Cancer Research.The study was conducted in mice, but the scientists involved agree that the strong biological findings are definitive enough that an effect in humans can be considered."This shows that something as simple as a change in diet can have an impact on cancer risk," said lead researcher Gerald Krystal, a scientist at the British Columbia Cancer Research Center.Krystal and his colleagues implanted various strains of mice with human tumor cells or with mouse tumor cells and assigned them to one of two diets. The first diet, a typical Western diet, contained about 55 percent carbohydrate, 23 percent protein and 22 percent fat. The second, which is somewhat like a South Beach diet but higher in protein, contained 15 percent carbohydrate, 58 percent protein and 26 percent fat. They found that the tumor cells grew consistently slower on the second diet.As well, mice genetically predisposed to breast cancer were put on these two diets and almost half of them on the Western diet developed breast cancer within their first year of life while none on the low-carbohydrate, high-protein diet did. Interestingly, only one on the Western diet reached a normal life span ( approximately 2 years), with 70 percent of them dying from cancer while only 30 percent of those on the low-carbohydrate diet developed cancer and more than half these mice reached or exceeded their normal life span.Krystal and colleagues also tested the effect of an mTOR inhibitor, which inhibits cell growth, and a COX-2 inhibitor, which reduces inflammation, on tumor development, and found these agents had an additive effect in the mice fed the low-carbohydrate, high-protein diet.When asked to speculate on the biological mechanism, Krystal said that tumor cells, unlike normal cells, need significantly more glucose to grow and thrive. Restricting carbohydrate intake can significantly limit blood glucose and insulin, a hormone that has been shown in many independent studies to promote tumor growth in both humans and mice.Furthermore, a low-carbohydrate, high-protein diet has the potential to both boost the ability of the immune system to kill cancer cells and prevent obesity, which leads to chronic inflammation and cancer.

KATHMANDU, Aug. 3 (Xinhua) -- Two glaciers in Nepal that shrank at an accelerated rate in the past 10 years compared to preceding decades will inevitably disappear from rising temperatures as no fresh snow supply is expected for them, a new research by Japan's Nagoya University says.According to Wednesday's Republica daily, the masses of the Yala glacier of Langtang Himal in central Nepal and the AX010 glacier of Shorong Himal in the Khumbu region shrank annually by 0. 8 meters and 0.81 meters respectively in the 2000s, which was a significant acceleration from the 0.68 and 0.72 meters of shrinkage per year between 1970 and 1990, said findings of the research published in a journal of the National Academy of Sciences of the United States on Tuesday."If the trend since the 1990s continues for the Yala and AX010 glaciers, the disappearance of these glaciers is inevitable because they are about to lose their accumulation areas, thus, no snow supply is expected for these glaciers," says the research conducted by Koji Fujita and Takayuki Nuimura.The researchers also found that while the shrinking of glaciers has accelerated in humid environments, the opposite is true for those in arid environments. The shrinking of Rikha Samba glacier located in the Kaligandaki Hidden Valley slowed from 0.57 meters per year between 1970 and 1990 to 0.48 meters per year in the 2000s."A comparison of the mass balance results and annual precipitation reveals that glacier wastage has been accelerated in humid environments but suppressed in an arid environment," the research says.Apart from environment, altitude also appears to play a role in the lifespan of glaciers, the researchers say. Rikha Samba is located at an altitude of 5,700 meters where loss of mass from melting could be compensated to some extent by collection of snowfall.The Yala glacier and AX010, on the other hand, are located at lower altitudes of 5,400 meters and 5,200 meters respectively.

BEIJING, Aug. 2 (Xinhuanet) -- The first close-up pictures of the asteroid Vesta, a protoplanet that dates back to the early days of the solar system, were revealed Monday by NASA scientists.The images were taken by the U.S. space agency's Dawn robotic probe, which is two weeks into a planned year-long survey of the second largest object in the main asteroid belt, located between Mars and Jupiter.About twice the size of California, Vesta is second in size only to Ceres, Dawn's next target and, along with Pluto, one of just five known dwarf planets. NASA is spending 466 million dollars to explore Vesta and Ceres during the course of a 10-year mission.Images from Dawn show Vesta a surprisingly diverse terrain and several unexplained geologic features. Chaotic terrain near the south pole is dominated by a towering central peak and huge ripple-like grooves stretching around its equatorial belt. Bright spots, dark pits and craters are filled with unexplained streaks of black and white debris. Terrain north of the grooves is much more heavily cratered.Scientists believe Vesta grew from a clump of gas and dust left over after the sun's birth some 4.65 billion years ago, a supernova explosion, which added radioactive materials to the growing body.Dawn will spend about a year circling Vesta, tweaking its orbit and altitude using an innovative technology called ion propulsion system, chief engineer Marc Rayman with NASA's Jet Propulsion Laboratory in California said.The ion propulsion system will enable Dawn to leave Vesta's orbit after a year of study and head off to Ceres, which is the largest object in the asteroid belt.