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Tail Spin

    Two dolphins race around in a big pool in the Ocean Park. The smaller dolphin Grace, shown off a few of her tricks, turning around and waving hello to the crowd. The most amazing thing about her, however, is that she's even swimming at all. She doesn't have a tail.

Grace lost her tail as a baby when she got caught up in a fish trap. When the dolphin arrived at the Ocean Park in December 2005, she was fighting for her life. “Is she going to make it?” Her trainer, Abbey Stone, feared the worst. Grace did make it — but her tail didn't. She ended up losing her flukes and the lower part of her peduncle.

Over the past six years, she has learned to swim without her tail. Dolphins swim by moving their flukes and peduncle up and down. Grace taught herself to move another way—like a fish! She pushed herself forward through the water by moving her peduncles from side to side.

    The movement put harmful pressure on Grace's backbone. So a company offered to create a man-made tail for her. The tail had to be strong enough to stay on Grace as she swam but soft enough that it wouldn't hurt her.

    The first time Grace wore the artificial tail. She soon shook it off and let it sink in the bottom of the pool. Now, she is still learning to use the tail. Some days she wears it for an hour at a time, others not at all. “The tail isn't

necessary for her to feel comfortable,” says Stone, “but it helps to keep that range of motion(动作) and build muscles(肌肉).”

    Now, the dolphin is about to get an even happier ending. This month, Grace will star in Dolphin Tale, a film that focus on her rescue and recovery. Her progress has inspired more than just a new movie. Many people travel from near and far to meet her. Seeing Grace swim with her man-made tail gives people so much courage.

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    Easter(复活节) is still a great day for worship, randy in baskets and running around the yard finding eggs, but every year it gets quite a bit worse for bunnies.

    And no, not because the kids like to pull their ears. The culprit is climate change, and some researchers found that rising temperatures arc having harmful effects on at least five species of rabbit in the US.

    Take the Lower Keys March rabbit, for instance. An endangered species that lives in the Lower Florida Keys, this species of cottontail is a great swimmer — it lives on the islands! — but it is already severely affected by development and now by rising levels. According to the Center for Biological Diversity, an ocean level rise of only 0. 6 meters will send these guys jumping to higher ground and a 0.9-meter rise would wipe out their habitat (栖息地) completely.

    The snowshoe hare, on the other hand, has a color issue. Most of these rabbits change their fur color from white in the wintertime to brown in the summer, each designed to give them better cover from predators（捕食者）. As the number of days with snow decreases all across the country, however, more and more bunnies arc being left in white fur during brown dirt days of both fall and spring, making them an easier mark for predators. Researchers know that the color change is controlled by the number of hours of sunlight, but whether the rabbit will be able to adapt quick enough to survive is a big question. The National Wildlife Federation has reported that hunters have noticed their numbers are already markedly down.

    American pikas or rock rabbits, a relative of rabbits and hares, might be the firs' of these species to go extinct due to climate change. About 7-8 inches long, pikas live high in the cool, damp mountains west of the Rocky Mountains. As global temperatures rise, they would naturally migrate (迁徙) to higher ground — but they already occupy the mountaintops. They can't go any higher. The National Wildlife Federation reports that they might not be able to stand the new temperatures as their habitat beats up.

    The volcano rabbit has the same problem. These rabbits live on the slopes of volcanoes in Mexico, and recent studies have shown that the lower range of their habitat has already shifted upward about 700 meters, but there are not suitable plants for them to move higher, so they are stuck in the middle. Scientists are concerned about their populations.

    Native to the US, pygmy rabbits weigh less than 1 pound and live in the American West. They are believed to be the smallest rabbits in the world. Their habitats have been destroyed by development. Several populations, such as the Columbia Basin pygmy, almost went extinct and were saved by zoo breeding programs. Pygmy rabbits also rely on winter cover by digging tunnels through the snow to escape predators, but lesser snowfall is leaving them exposed.

All of this gives new meaning to dressing up in a giant bunny costume this Easter.

    A generation ago young people longed to become lawyers and doctors. Now they desire to be the next Oscar winner or famous pop star. But one university psychologist has pointed out that this is damaging our self-image and sense of self-worth. Over recent years people around the world have been suffering from an increasing fear of their own “insignificance”, according to Dr. Strenger of Tel Aviv University.

    He began a project on the phenomenon 10 years ago, after noticing an increase of fear in his own patients. His findings note hundreds of research projects that have recorded an unprecedented (前所未有) increase in levels of anxiety and depression. By using a wide-ranging framework Dr. Strenger thinks he has given the accurate cause. “The impact of the global entertainment network on the individual is to blame,” he said. “A new species—global man—is born and we are defined by our close connection to the global entertainment network, which has turned ranking and evaluating people according to wealth and fame into an obsession (狂热).”

    As humans we naturally measure ourselves by those around us, but now we live in a “global village” where we are comparing ourselves with the most “significant” people in the world - and finding ourselves not good enough. Today, even high achievers constantly fear that they are insignificant when they compare themselves to success stories in the media. “This creates highly unstable personality and an unstable society,” Dr. Strenger said.

    Dr. Strenger says people should stop measuring their achievement through the cultural fantasies of rich and famous people. The remedy (治疗方法) is a process that he calls “active self-acceptance” through a continuing search for self-knowledge through life. The fear of insignificance can only be overcome through strong individual and cultural identity over and above measurable achievement. “People should invest time and thought in their personal growth from different aspects in the same way they invest in medical studies and law school,” Dr. Strenger advises.

    Getting paid to stay in bed all day sounds pretty good. But what if someone offered you $23,000 to stay in bed for two months? That's the deal that are search team is offering to 24 volunteers.

    Researchers are looking for volunteers to help them study the influences of weightlessness on the human body by spending 60 days lying down. Lying in bed isn't exactly the same as being weightless, but the influences on the human body are similar.

    When astronauts spend a long time in an environment with no gravity(重力), like the International Space Station (ISS),their bodies are affected in many ways. After a couple of months on the ISS, astronauts' hearts don't beat as hard. Their muscles（肌肉）become weaker because they no longer have to work against gravity. Their bones may break more easily. There may also be changes in the astronauts' sleep habits.

    Dr. Arnaud Beck, the researcher in charge of the study, said his goal is to measure the influences of weightlessness, and also to find ways to prevent problems. The study will take 88 days altogether. During the first two weeks the volunteers will be tested to establish(确定) their levels of fitness. Then they will spend 60 days lying in bed with their heads slightly lower than their bodies. They will have to do everything while lying down, including brushing their teeth and going to the bathroom. Dr. Beck said the rule is that they must have at least one shoulder touching the bed at all times. Half of the volunteers in the study will be taking capsules(胶囊) containing special food supplements（增补物）several times a day to see if they help reduce the health problems caused by weightlessness. The last two weeks of the study will be spent trying to let the volunteers recover. Volunteers must be men between the ages of 20 and 45 who are in perfect health. They must be non-smokers.

    The study will take place from September 1^st to November. The first two days are the time for volunteers to sign in.

    Spend any time in London, England's capital, and you'll quickly gather that it's a multicultural (多元文化的) community. Look around at your fellow passengers on the Tube(地铁) or the bus. They're of every skin color and dress differently to one another. Listen, and you'll hear many other languages besides English spoken. Some of these people, no doubt, will be tourists who are in London to see the sights. But others — in fact probably most — will be living their lives there, along with millions of others.

    Along with white British people, there are Britons from, or with parents and grandparents from, the Caribbean, India, China and most other places. This makes London a fascinating place in which to live. The reason is that when people settle in a place, they don't just buy a house and live there, but bring aspects of the culture of their “old country” with them.

    The most visible sign of this is the number of restaurants offering dishes from different parts of the world. In a city in which it's estimated 250 different languages are spoken, you can expect a similarly wide range of foods to be available. You would expect in one of the world's leading cities to encounter(遇到) French, Italian, Chinese and Indian eateries. But in London you'll also find Polish, Patagonian and Palestinian restaurants.

    However, London's multiculturalism isn't just about food. Many types of people are gathered in one space, but the way they live differently shows in that space. They worship(崇拜) differently, for one thing. Alongside the famous old English churches by Nicholas Hawksmoor and Christopher Wren — responsible for one of the capital's most famous landmark, St Paul's Cathedral—you'll find mosques(清真寺), temples and synagogues (犹太教堂).

    London even speaks its own special kind of English. Language experts created the term “Multicultural London English” to identify the dialect of English that appeared at the end of the last century.

    All of this makes London a very surprising and varied place to call your home. But, in a way, this has long been true. In the 18^th century, the compiler(编纂者) of the first English dictionary, Samuel Johnson, once said: “ He who is tired of London is tired of life.”

    Craft (手工艺）is becoming a heritage industry — but a record of disappearing skills might just come in handy in the future.

    Mr. Lobb (of John Lobb the bootmaker) mentioned that custom clothing and shoe-making were once the norm for everyone. How come，then，today a pair of normal Lobbs would set you back over £2,000? The price has obviously gone up because of lack of competition and higher wages，but would custom clothing once again be affordable to all if the demand was there? Do we just wave goodbye to these skills，or should we fight to maintain them?

    The disposable (一次性的）culture we “enjoy” today has existed in our life for almost two generations now. We like our products to be made by either a robot or invisible，cheap hands so that we can accumulate them cheaply and frequently. The concept of “craft” is something that's now largely considered to be strange，and seems to be limited to museums and dusty, independent shops. Hobby crafts such as knitting do undergo revivals (复兴)from time to time，but I think that's because they are seen as short-lived fashionable leisure pursuits rather than a craft worthy of revivals on a commercially feasible (可行的)scale.

To drive a revival in any of these crafts, you would probably need to apply the same marketing techniques that are used to sell any other items today. The consumer must believe that they just have to have it. If they don't have it now, it will either go up in price or go out of fashion — both reasons enough in themselves for a shopper to act.

    But does it finally matter if these skills will no longer serve any practicable use in the decades to come? I don't know the answer to that，but I have long thought it would be a good idea if we “banked” these skills somehow，just as we are not attempting to do with seeds. You just never know whether we'll need them in the future. Maybe it's time to establish a worldwide network of volunteers to record，through the written words and videos，as many of these dying skills as possible. Actually, a rough look on YouTube fills me with hope that an army of willing volunteers is probably out there already and just needs someone or something to gather them together.