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　　Japanese doctors have used thin sheets of tissue from people’s cheeks to repair damaged corneas(角膜)．A team from Osaka University transplanted thin layers of cheek cells onto the eyes of four patients with a rare and painful eye condition, reports BBC online．Patients whose vision had been cloudy could see well afterwards, and the“new corneas”remained clear more than a year after the operation．

　　Doctors can also take cells from a healthy eye and grow them in a dish to produce a new cornea, or they can transplant corneas from donors．But these techniques may not work when both eyes are too badly damaged by accident or disease．

　　The team hope their work may help solve the problem and lead to other types of grow-your-own tissue transplants．The cornea is the clear layer of cells on the surface of the eye．It cat be damaged by trauma(外伤)or by a range of diseases．

　　The team worked with four patients who had a painful condition that caused cloudy corneas and dry eyes．Often the eye can regenerate cornea cells but none of the four patients had this ability．The researchers took a 3mm-wide square of tissue from inside the mouth(cheeks)and grew it into a thin layer in the lab．They used a special low-temperature technique to separate a very thin sheet off each batch(组)．They then laid that onto the patient’s eye．The cell layers stuck onto the eye and developed into tissue that looked and acted like a healthy cornea．

　　However, long-term follow-up and experience with a large series of patients are needed to assess the benefits and risks of this method．“Yet, it does offer the potential of treating severe eye diseases that are resistant to standard approaches,”said the head of the research, Kohji Nishida．

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　　Healthy relationships are fun and make you feel good about yourself．The relationships that you make in your teenage years will be a special part of your life．They will teach you some of the most important lessons about who you are．This may help you understand different kinds of relationships, what makes each relationship special, and how to communicate in a positive way．

　　Communication and Sharing：The most important part of any healthy relationship between two people is being able to talk and listen to each other．You and the other person can find out what your common interests are．You can share your feelings with the other person and trust that he or she will be there to listen to you and support you．In healthy relationships, people don’t lie．Communication is based on honesty and trust．By listening carefully and sharing your thoughts and feelings with other people, you show them that they play an important part in your life．

　　Respect and Trust：In healthy relationships, you learn to respect and trust important people in your life．Disagreements may still happen, but you learn to stay calm and talk about how you feel．Talking calmly helps you to understand the real reason for not getting along．It makes it much easier to figure out how to fix it．In healthy relationships, working through disagreements often makes the relationship stronger．In healthy relationships, people respect each other for who they are．This includes respecting and listening to yourself and your feelings so you can set boundaries and feel comfortable．You will find that you learn to understand experiences and feelings of others as well as having them understand your experiences and feelings．

　　You know that you are in a healthy relationship with someone because you feel good about yourself when you are around that person．Unhealthy relationships can make you feel sad, angry, scared, or worried．

　　Healthy peer relationships involve an equal amount of giving and taking in the relationship．In unhealthy relationships, there is an unfair balance．You may often feel that you are giving the other person more attention than that he or she gives to you．

　　You should feel safe around the other person and feel that you can trust him or her with your secrets．In a healthy relationship, you like to spend time with the other person, instead of feeling that you have to spend time with him or her．

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　　For children with cancer, the facts of life include the facts of death．There is always the fear they might not live to grow up, yet they realize that fighting cancer is the only way of beating it．So they fight．And sometimes, they win．It may take years．It certainly takes support from parents and doctors．

　　Unfortunately, many parents can’t deal with their child’s illness．And doctors, no matter how caring, have other patients to care for．At times like these, the Children’s Cancer Foundation(formerly the Children’s Cancer Fund)can help．We’re a group of Hong Kong doctors, nurses, psychologists, parents of children with cancer and concerned persons．All of us are volunteers．We’re with the children every day, listening to and encouraging them．We also advise parents, educate the public and send doctors overseas to study new cancer treatments．Our funding has brought better equipment to the wards．And paid for special fiats where children can recover in a hygienic(卫生的), yet cheerful home setting．

　　We want to do even more．But to do it, we need your support．It will be money well spent．One looks at our past achievements should prove that．To the children, your contribution will also be a show of support．A sign that you’re behind them, which is just the sort of news that a six-year-old with cancer needs to hear．

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　　A small piece of fish each day may keep the heart doctor away．That’s the finding of a study of Dutch men in which deaths from heart disease were more than 50 percent lower among those who consumed at least an ounce of salt water fish per day compared to those who never ate fish．

　　The Dutch research is one of three human studies that give strong scientific support to the long held belief that eating fish can provide health benefits, particularly to the heart．

Heart disease is the number-one killer in the United States, with more than 550,000 deaths occurring from heart attacks each year．But previous research has shown that the level of heart disease is lower in cultures that consume more fish than Americans do．There are fewer heart disease deaths, for example, among the Eskimos of Greenland, who consume about 14 ounces of fish a day, and among the Japanese, whose daily fish consumption averages more than 3 ounces．

　　For 20 years, the Dutch study followed 852 middle-aged men, 20 percent of whom ate no fish．At the start of the study, average fish consumption was about two-thirds of an ounce each day, with more men eating lean fish than fatty fish．

　　During the next two decades, 78 of the men died from heart disease．The fewest deaths were among the group who regularly ate fish, even at levels far lower than those of the Japanese or Eskimos．This relationship was true regardless of other factors such as age, high blood pressure, or blood cholesterol(胆固醇)levels．

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　　Everyday rubbish could provide a valuable source of energy thanks to a clever new invention．Smelly methane(沼气)gas expelled from landfill sites containing tones of rotting household waste could be used to produce a valuable energy resource．In Europe alone land fill tips produce 94 billion cubic meters of methane per year but currently only one percent of what could be a valuable source of energy is used, the rest is burnt off to prevent an explosive build up of gas．

　　Methane gas forms when organic matter breaks down and is drawn off from large rubbish tips by pipes sunk into the middle of the waste．Until now this process wasn’t possible on small sites because the pipe allowed oxygen to seep in and that stop the breakdown process．

　　Viktor Popov of the Wessex Institute of Technology has now developed a system to modify existing landfill sites by making them airtight while the methane is extracted from sunken wells．The site is covered by a special three-layered skin whose two outer layers are made of clay with a pressurized(加压的)layer of carbon dioxide gas in the middle．As the methane is sucked out through a central well it is replaced by carbon dioxide from the middle layer rather than oxygen, allowing the breakdown process to continue．

　　Unfortunately there are no plans to use the power of methane even though Popov claims his invention could provide a valuable source of energy over the next 20 years．

(From http：//www.thenewspaper.org.uk/science/pg000276.php-8k)

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　　John Steinbeck once said,“All American believe they are born fishermen．For a man to admit to a distaste in fishing would be like speaking publicly against mother-love or hating moonlight”．

　　I can’t say I’m the biggest John Steinbeck fan．Actually, the only thing I can ever remember reading by him was“The Pearl”when I was in middle school, but I couldn’t agree more with the man when it comes to fishing．When I am on a boat in the middle of the lay Lake, fishing off the shores of the Florida Keys for tarpon or catching rainbow trout in the Shoshone River of Wyoming．Fishing is my life．

　　According to the American Sports Fishing Association, the fishing industry brings in more than $ 116 billion per year from fishermen across the country．

　　Though a beautiful picture to imagine, fishing is much more than that．Fishing is a way of life from many people and a way to escape everyday stress．Being a fisherman makes me a member of a wonderful group of people extending to all walks of life．Even President Bush can be found fishing on his farm in Texas with his good friend Roland Martin when the jobs gets too stressful．

　　I can remember fishing with my grandfather when I was 5 years old on his boat at Lake Michel．Although I didn’t understand what I was doing, I did know that my grandfather was happy and that made me happy．Since then I’ve spent the past 16 years on the rivers and lakes of Alabama．

　　After days of practice, before and after work, I slowly developed an understanding of fishing．My boss, Ric Horst, took me back to the Shoshone, and I managed to bring in a 19-inch cutthroat trout．Fishing with Ric was a life-changing experience for me．He not only showed me how to fish correctly, but also told me how fishing could be a way to escape your problems．

　　Since then, prime-time season seems to take forever to arrive．

　　Now, with the ending of February and beginning of March is sight, the excitement of heading out to Lake Tus caloosa or Lake Lurleen before classes and catching something has finally returned．

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　　The government of Norway is planning to build an unusual storage center on an island in the Arctic Ocean．The place would be large enough to hold about two million seeds．The goal is to present all crops known to scientists．The British magazine New Scientist published details of the plan last month．The structure will be designed to protect the world’s food supply against nuclear war, climate change and other possible threats．It will be built in a mountain on the Norwegian island of Spitsbergen．The mountain is less than one thousand kilometers from the North Pole, the northernmost position on earth．

　　An international group called the Global Crop Diversity Trust is working on the project．The director of the group, Cary Fowler, spoke to New Scientist．He said the project would let the world rebuild agriculture if, in his word,“the worst came to the worst”．Norway is expected to start work next year．The project is expected to cost three million dollars．Workers will drill deep in the side of a sandstone mountain．Temperatures in the area never rise above 0℃．The seeds will be protected behind concrete walls a meter thick and high-security door．

　　The magazine report says the collection will represent the products of ten thousand years of farming．Most of the seeds at first will come from collections at seed banks in Africa, Asia and Latin America．To last a long time, seeds need to be kept in very low temperatures．Workers will not be present al the time．But they plan to replace the air inside the storage space each winter．Winter temperatures on the island are about eighteen degrees below 0℃．The cold weather would protect the seeds even if the air could not be replaced．

　　Mr．Fowler says the proposed structure will be the world’s most secure gene bank．He says the plant seeds would only be used when all other seeds are gone for some reason．Norway first proposed the idea in the 1980s．But security concerns delayed the plan．At that time, the Soviet Union was meeting in Rome of the Food and Agriculture Organization．

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　　Beginning college is exciting： new ideas to explore, new challenges to be met and many decisions to be made; your future begins here．

　　However, you will find college life is different from your previous school environment．Many of us can be easily overwhelmed by the details of running a well-balanced life．While some of us may have the know-how, I guess there are more of us who can benefit from learning about the experiences of others who have walked the college halls before you．

　　The following you may find of use about life on campus：

　　·Plan well．There are so many new things to do at a new college or university．Give yourself time to make new friends and became familiar with the campus, but don’t forget why you are there．Give some time for social activities and manage your time wisely．

　　·If you don’t have a“system”for planning your time now (like a day timer a computer data book)．get one．Most of all, don’t depend on your memory．

　　·Don’t miss the guidelines．The restrictions, rules and regulations of all kinds can usually be found in your student’s handbook．Consider them well-balanced food for thought．What dates are important?What pieces of paper need to be handed in?What can/can’t you do in your student residence(住处)?Who has the right for what?What do you need to complete to graduate?

　　·Write the word “STUDY” on the walls of our bedroom and bathroom, and maybe it will help to to write it on a piece of paper and stick it on the telephone, TV and the kitchen table．Consider this－you are paying thousands of dollars for your course．You pay every time you have to repeat or replace a course．

　　·Build your identity．This is the time for you to decide what to do and what not to do．Take as much time as you need to explore new ideas．Do not be afraid of the beyond．This is learning to make good choices．

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　　Cars!!!holidays!thousands of prizes!hurry!Free with every packet of splash!your personal lucky number!

　　Will be among the 500,000 winners!Use splash for the softest…quickest…whitest wash!Don’t delay… buy a packet today!

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　　The two things-snow and mountains-which are needed for a ski area are the two things that cause avalanches, large mass of snow and ice crushing down the side of a mountain－often called"White Death．"

　　It was the threat of the avalanche and its record as a killer of man in the western mountains that created the snow ranger．He first started on avalanche control work in the winter of 1937－38 at Alta, Utah, in Wasatch National Forest．

　　This mountain valley was becoming well known to skiers．It was dangerous．In fact, more than 120 persons had lost their lives in 1936 and another 200 died in 1937 as a result of avalanches before it became a major ski area．Thus, development of Alta and other major ski resorts in the west was dependent upon controlling the avalanche．The Forest Service set out to do it, and did, with its corps of snow rangers．It takes many things to make a snow ranger．The snow ranger must be in excellent physical condition．He must be a good skier and a skilled mountain climber He should have at least a high school education, and the more college courses in geology, physics, and related fields he has, the better．

　　He studies snow, terrain, wind, and weather．He learns the conditions that produce avalanches．He learns to forecast avalanches and to bring them roaring on down the mountainsides to reduce their killing strength．The snow ranger learns to do this by using artillery, by blasting with TNT, and by the difficult and skillful art of skiing avalanches down．

　　The snow ranger, dressed in a green parka which has a bright yellow shoulder patch, means safety for people on ski slopes．He pulls the trigger on a 75 mm．Recoilless rifle, skis waist deep in powder testing snow stability, or talks with the ski area’s operator as he goes about his work to protect the public from the hazards of deep snow on steep mountain slopes．

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