Internet use appears to cause a decline in psychological well-being（安康）, according to research at Carnegie Mellon University.

    Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less frequently, the two-year study showed. And it wasn't that people who were already feeling bad spent more time on the Internet, but that using the Net actually appeared to cause the bad feeling.

    Researchers are puzzling over the results, which were completely contrary to their expectations. They expected that the net would prove socially healthier than television, since the Net allows users to choose their information and to communicate with others.

    The fact that Internet use reduces time available for family and friends may account for the drop in well-being, researchers suggested. Faceless, bodiless “virtual”（虚拟的）communication may be less psychologically satisfying than actual conversation, and the relationship formed through it may be shallower. Another possibility is that exposure to the wider world via the Net makes users less satisfied with their lives.

    “But it's important to remember this is not about the technology perse; it's about how it is used,” says psychologist Christine Riley of Intel, one of the study's sponsors. “It really points to the need for considering social effects in terms of how you design applications and services for technology.”

    Finding summer jobs for teenagers has not always been easy, but now you no longer have to worry about what your kids can do to earn their own money. Recently I found some different sites online that offer information about what kids can do. Below issome of that information, along with questions to think about to help you come upwith your own ideas.

Ideas for summer work:

●Parks and Recreation Programs.

●Babysitting (当临时保姆) during the day of school.

●Working part-time at a day care for the summer.

●Car washing.

●Working at local vegetable stands.

    The easiest way for you to find ways for your child to make money is to think about others' inconveniences (不方便). Think of things you need done, or would like to have done, and what you would consider paying for these things to get done. Once you have some ideas, you can sit down with your children and talk to them aboutwhat they would be interested in doing. Then once you have an idea of what theywant to do you can help them come up with fair prices.

    Preferably you would want to only have your child working with people you know and trust, or in the least bit you could have your child pick a partner. That way with each of them carrying cell phones, even those without service can call 911, they will be much safer.

    You can find out more information and many more ideas for kids to use to make money during their summer holidays by visiting http://www.kidswantmoney.com.

    The faces of the four U. S. presidents on Mount Rushmore will likely last for centuries. But at a newly opened exhibit in Japan, you can catch them only for about eight months. This year, the annual sand sculpture event at the Sand Museum in Tottori, Japan, is focused on another country. This is the 10^th anniversary of the event. Artists came from 19 countries to shape sand into different sculptures that represent events in U. S. history and American landmarks.

    Tottori is a remote city in western Japan. In the past, not many tourists traveled to it. To attract more visitors, Tottori officials decided to use a natural resource: sand. They decided to create a sand museum that would house a series of sand sculptures based on different geographic areas of the world. The sand from each year's exhibition is used again the next year. The project has been a success. About 500,000 people visit the museum during the eight months. Some return year after year to see the new sculptures.

    The city is now a popular spot for sand sculpture artists too. Sculptors from around the world come to Tottori each spring, spending a few weeks working on their masterpieces. They use special tools to smooth the sandy surfaces, cut angles and details. They use only sand and water to create the huge sculptures, some of which tower over their creators.

    Originally, the artists built their creations outside. But the works lasted less than two months outdoors. So the museum built a permanent structure 10 house the artworks, which extended their life to eight months. Now many more tourists get to see the sculptures. Still, the fact that this art is not permanent is part of the appeal. The temporary sculptures reflect the Japanese value of appreciating the fleeting（稍纵即逝）nature of the world.

    Tottori is not the only Japanese town that shows temporary art like this. Sapporo, in northern Japan, hosts a similar exhibit in the winter, using snow instead of sand. Thai will be just about the time that the U. S. sand sculpture exhibition is taken apart, and the sand is saved for next year's show.

    Sometimes you'll hear people say that you can't love others until you love yourself. Sometimes you'll hear people say that you can't expect someone else to love you until you love yourself. Either way, you've got to love yourself first and this can be tricky. Sure we all know that we're the apple of our parents' eyes, and that our Grandmas think we're great talents and our Uncle Roberts think that we will go to the Olympics. But sometimes it's a lot harder to think such nice thoughts about ourselves. If you find that believing in yourself is a challenge. It is time you build a positive self-image and learn to love yourself.

    Self-image is your own mind's picture of yourself. This image includes the way you look, the way you act, the way you talk and the way you think. Interestingly, our self-images are often quite different from the images others hold about us. Unfortunately, most of these images are more negative than they should be. Thus changing the way you think about yourself is the key to changing your self-image and your whole world.

    The best way to defeat a passive self-image is to step back and decide to stress your successes. That is, make a list if you need to, but write down all of the great things you do every day. Don't allow doubts to occur in it.

    It very well might be that you are experiencing a negative self-image because you can't move past one flaw or weakness that you see about yourself. Well, roll up your sleeves and make a change of it as your primary task. If you think you're silly because you aren't good at math, find a tutor. If you think you're weak because you can't run a mile, get to the track and practice. If you think you're dull because you don't wear the latest trends, buy a few new clothes. But remember, just because you think it doesn't mean it's true.

    The best way to get rid of a negative self-image is to realize that your image is far from objective, and to actively convince yourself of your positive qualities. Changing the way you think and working on those you need to improve will go a long way towards promoting a positive self-image. When you can pat(拍) yourself on the back, you'll know you're well on your way. Good luck!

    Many people believe that you lose the ability to learn new languages as you get older. Language experts, however, will tell you that you're never too old to learn a new language. As you get older, it can be more difficult to learn a new language, though.

    Children and adults learn new languages in different ways. For children, language is their life. They study for thousands of hours every year, because they need to learn languages to become part of their communities. Adults, on the other hand, are already part of a language community. Learning a new language means becoming part of another language community, and adults rarely get the chance to practice as much as young children do.

    Moreover, children learning a new language are expected to make mistakes. This gives them freedom when learning to be daring and confident. Adults, however, often feel pressured to be perfect when learning a new language. This can discourage many people and make it even harder to learn a new language.

    When young children learn a new language, they come to see various languages as a “normal” part of society. This mindset(思维模式) helps them embrace learning a new language without feeling like they're doing something unusual or “too hard”.

    So if you want to learn a new language, go for it! It's never too late to learn a new language. If you're older, it may take more work, but it can be done. If you're a young child, though, now is the time to step out and learn a new language!

                                        Do dogs understand us?

    Be careful what you say around your dog. It might understand more than you think.

    A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).

    In one experiment, the researchers took all 200 items that Rico is supposed to know and divided them into 20 groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests, Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.

    In another experiment, the scientists took one toy that Rico had never seen before and put it in a room with seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.

    The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.

    Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (品种)known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.

    It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!