I live in the land of Disney, Hollywood. You may think people in such an attractive and exciting, fun-filled place are happier than others. If so, you have some mistaken ideas about the nature of happiness.

    Many intelligent people still consider happiness equal to fun. The truth is that fun and happiness have little or nothing in common. Fun is what we experience during an act. Happiness is what we experience after an act. It is a deeper, more lasting emotion.

    Going to an amusement park or ball game, watching a movie or television, are fun activities that help us relax, temporarily forget our problems and maybe even laugh. But they do not bring happiness, because their positive effects end when the fun ends.

    I have often thought that if Hollywood stars have a role to play, it is to teach us that happiness has nothing to do with fun. These rich, beautiful people have constant access to glamorous parties, fancy cars, expensive homes, everything that brings “happiness”. But in memoir after memoir, famous people expose the unhappiness hidden beneath all their fun — depression, alcoholism, drug addiction, broken marriages, troubled children and extreme loneliness.

    Ask an unmarried man why he refuses to get married even though he finds dating to be less and less satisfying. If he's honest, he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful. The single life is filled with fun, adventure and excitement. Marriage has such moments, but they are not its most distinguishing features.

    Similarly, couples that choose not to have children are deciding in favor of painless fun over painful happiness. They can dine out whenever they want and sleep as late as they want. Couples with babies are lucky to get a whole night's sleep or a three-day vacation. I don't know any parent who would choose the word fun to describe raising children.

    The way people stick to the belief that a fun-filled, pain-free life equals happiness actually reduces their chances of ever achieving real happiness. If fun and pleasure are equal to happiness, then pain must be equal to unhappiness. As a result, they fear the pain unavoidably brought by such things as marriage, raising children, professional achievement, religious commitment and self-improvement.

    But, in fact, the opposite is true. More times than not, things that lead to happiness involve some pain. The very efforts are the source of true happiness. Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations we can ever come to.

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    Robots and humans will soon be living in harmony(和睦).A singing robot is being taught to create jazz with a human in a project.

    Antonio Chella from Italy is working with a Telenoid robot. To start with, the Telenoid will be trained to follow the movements and simple sounds made by a human singer, and to connect music with different emotional states. Chella then plans to see if the robot can use these connections to create music.

    Intelligence is often regarded as the ability to find connections between the existing things. But Chella suggests that a conscious(有意识的) creature should be able to go a step further and introduce new connections that result in the creation of something new.

    Some jazz musicians say that they should have a mental library of musical phrases so that they are able to combine them in new ways. More importantly, however, this combination happens in a state that is similar in a sense to dreaming. Chella wants to copy these states in a machine.

    “This work raises interesting questions about the link between consciousness and music making,” says Philippe Pasquier, a musician and computer scientist. But he is skeptical about whether a robot musician needs a physical body.

    Pasquier argues that the robots are faced with two challenges(挑战). Software that can copy Bach has already been developed. But interpretation（演绎）includes human's different tastes and judgments. “What made the Beatles famous was not so much their works, but the fact that the interpretations of the works were wonderful,” he says.

    It is not yet clear how a robot would go about interpreting music in a new way. But by copying humans and then learning to sing, Chella's robot could provide clues.

    What seems to be important is that human composers often listen to lots of music made by others. So Chella's robot had better listen to those jazz standards first.

    Are you looking for some new and exciting places to take your kids to? Try some of these places:

    Visit art museums. They offer a variety of activities to excite your kids' interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings(签名) by children's favorite writers, and even musical performances and other arts.

    Head to a natural history museum. This is where kids can discover the past from dinosaur models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.

    Go to a Youtheater. Look for one in your area offering plays for child and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. Puppet (木偶) making and stage make-up are just a couple of the special offerings you might find.

    Try hands-on science. Visit one of the many hands-on science museums around the country. These science play-lands are great fun for kids and grown-ups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.

    I decided to ski to the North Pole. It was after I saw an advertisement in a newspaper looking for people to join a team to ski 350 miles to the North Pole. Back in 1996, there had never been a woman from the UK who had accomplished this challenge. I wondered what it would be like to survive in temperatures cold enough to freeze your flesh in seconds, so I sent off for the application form.

    The application form full of pictures of male explores arrived. The words "Are you man enough for the ultimate（极限的）challenge?" made me angry and even more determined to get on the team.

    Over 500 individuals applied for a place in the team, and the selection process included physical and psychological tests designed to pick the best group. In one test, there was a huge rope ladder we had to climb, and I froze at the top because I have a fear of heights. I thought my hopes were fading as most other applicants sailed past, leaving me behind. But two others helped me over, and later I found out that the organizers were not looking for amazing individuals, but great team players, and this moment had shown them who would take care of others in the team.

    I had revealed（显示）my weakness, and in a place like the Arctic, you have to be yourself, as there is nowhere to hide. These personalities of asking for help and showing weakness are necessary for women to master.

    I realized that by being myself, I could succeed. I was selected for the team. I realized that I could achieve more than I ever imagined — more importantly, by sharing my story with others, I could inspire them to take a step into the new world and reveal more of their abilities.

    Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.

    Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It's this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.

    Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.

    However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.

    As a result, she says, some of the injuries associated with running, such as runner's knee, are uncommon among race walkers. But the sport's strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.

Yoga (瑜伽) is a kind of sport. It is very popular around the world now. Everyone, young or old, men or women, can do yoga.

There are many reasons why people like yoga. First, yoga can build up your muscle. Your body will become stronger and more flexible. Second, yoga helps you get rid of stress. What's more, yoga can help your mind stay calm. To put it simply, the reason why so many people are falling in love with yoga is that they are discovering how wonderful it is for their mind, body and spirit.

Yoga began in India about 5,000 years ago. At that time, people wanted to be free, healthy and live a long life. As a result, this kind of exercise was born. The early yoga was part of the religion (宗教). It was usually taught one to one—one teacher and one student. Later, it was accepted by more people.

Yoga is an Indian word that means "to join together". There are three parts of yoga altogether: exercise, breathing and meditation (冥想). In the past, people paid more attention to the spirit. The idea behind the exercise was to join the mind, body and spirit as one.

With the development of the exercise, more and more people are doing yoga as a way of keeping healthy. Among them, office ladies enjoy doing yoga most. Yoga can give them peace, help them feel relaxed and have fewer worries and illnesses.