The technology is great. Without it we wouldn't have been able to put a man on the moon, explore the ocean's depths or eat microwave sausages. Computers have revolutionized our lives and they have the power to educate and pass on knowledge. But sometimes this power can create more problems than it solves.

    Every doctor has had to try their best to calm down patients who've come into their surgery waving an Internet print-out, convinced that they have some rare incurable disease, say, throat cancer. The truth is usually far more ordinary, though: they don't have throat cancer, and it's just that their throats are swollen. Being a graduate of the Internet “school” of medicine does not guarantee accurate self-health-checks.

    One day Mrs. Almond came to my hospital after feeling faint at work. While I took her blood sample and tried to find out what was wrong, she said calmly, “I know what's wrong；I've got throat cancer. I know there's nothing you doctors can do about it and I've just got to wait until the day comes.”

    As a matter of routine I ordered a chest X-ray. I looked at it and the blood results an hour later. Something wasn't right. “Did your local doctor do an X-ray?” I asked. “Oh, I haven't been to the doctor for years,” she replied. “I read about it on a website and the symptoms fitted, so I knew that's what I had.”

    However, some of her symptoms, like the severe cough and weight loss, didn't fit with it—but she'd just ignored this.

    I looked at the X-ray again, and more tests confirmed it wasn't the cancer but tuberculosis (肺结核)—something that most certainly did need treating, and could be deadly. She was lucky we caught it when we did.

    Mrs. Almond went pale when I explained she would have to be on treatment for the next six months to ensure that she was fully recovered. It was certainly a lesson for her. “I'm so embarrassed,” she said, shaking her head, as I explained that all the people she had come into close contact with would have to be found out and tested. She listed up to about 20, and then I went to my office to type up my notes. Unexpectedly, the computer was not working, so I had to wait until someone from the IT department came to fix it. Typical. Maybe I should have a microwave sausage while I waited?

    When we think about happiness, we usually think of something surprising and unexpected, a top great delight.

    For a child, happiness has a magic quality. I remember playing police and robbers in the woods, getting a speaking part in the school play. Of course, kids also experience lows, but their delight at tops of pleasure is easily seen, such as winning a race or getting a new bike.

    For teenagers, or people under 20, the idea of happiness changes. Suddenly it's conditional on such things as excitement, love, and popularity. I can still feel the pain of not being invited to a party that almost everyone else was going to. I also recall the great happiness of being invited at another event to dance with a very handsome young man.

    In adulthood the things that bring great joy — birth, love, marriage — also bring responsibility and the risk of loss. Love may not last; loved ones die. For adults, happiness is complex.

    My dictionary explains “happy” as “lucky” or “ fortunate”, but I think a better explanation of happiness is “ the ability to enjoy something”. The more we can enjoy what we have, the happier we are. It's easy for us not to notice the pleasure we get from loving and being loved, the company of friends, the freedom to love where we please, and even good health. Nowadays, with so many choices and much pleasure, we have turned happiness into one more thing we have. We think we own the right to have it, which makes us extremely unhappy. So we try hard to get it and consider it to be the same as wealth and success, without noticing that the people who have those things aren't necessarily happier.

    While happiness may be more complex for us, the answer is the same as ever. Happiness isn't about what happens to us. It's the ability to find a positive for every negative, and view a difficulty as a challenge. Don't be sad for what we don't have, but enjoy what we do possess.

    City people usually think they are a lot smarter than country people. They often laugh at simple country ways. But people do not laugh at country music. It is one of the most popular kinds of music in the United States today.

    Perhaps it is so popular because it is about simple but strong human feelings and events—love, sadness, good times and bad times, it tells real life stories and sounds the way people really talk. As life becomes more and more complicated(复杂的), it is good to hear music about ordinary people.

    Country music, sometimes called country western, comes from two kinds of music. One is the traditional music of the people in the Appalachian Mountains in the eastern United States. The other is traditional cowboy music from the West. The singers usually play the guitars, and in the 1920s they started using electric guitars.

    At first city people said country music was low-class. It was popular mostly in the South. But during World War Ⅱ, thousands of Southerners went to the Northeast and Midwest to work in the factories. They took their music with them. Soldiers from the rest of the country went to army camps in the South. They learned to like country music. Slowly it became popular all over the country.

    Today country music is popular everywhere in the United States and Canada, in small towns and in New York City, among black and white, and among educated and uneducated people. About 1,200 radio stations broadcast country music twenty-four hours a day. People sing it in their languages. The music that started with cowboys and poor farmers is now popular all over the world.

    My first introduction to Chinese art was an early morning walk in Beihai Park in Beijing. There, I saw elderly people writing on the pavement with paintbrushes which were a metre long! I soon learned that they were doing water calligraphy − writing in water. The words have meanings, but they are also art. The calligraphy quickly disappears, of course. But tomorrow, the old people will be back.

    Temporary art like this is very popular in China. Every winter, Harbin, in northern China, is visited by sculptors and tourists from around the world. They come for the Harbin Ice Festival, when the city has huge sculptures made out of ice. The sculptures are bigger than houses, and they take weeks to make. Harbin's freezing winter temperatures make it very difficult for the artists to work outside. But the weather also means that the sculptures will be protected until the spring.

    Of course, not all Chinese art is temporary − some of it has been around for a very long time! Near the city of Xi'an, I visited the amazing terracotta warriors, or soldiers. In 200 BC, 8,000 statues of soldiers were made by sculptors out of a material called terracotta. They are as big as real people and they all have different faces. An important king had the statues produced to protect his body after he died. They stayed under the ground with the dead king for over 2,000 years, until they were discovered by a farmer in 1974.

    At the China Art Museum, in Shanghai, I saw wonderful 16th-century Chinese paintings of tall mountains, trees and cliffs. The paintings were beautiful, but they didn't look very realistic to me at the time. 'Mountains aren't like that,' I thought. But that was before the last stop on my trip: the mountains of Zhangjiajie National Park.

    These mountains were used by film director James Cameron in his sci-fi film Avatar because they look like something from another planet. On my last weekend in China, I took a cable car up into the mountains there. Trees grew on the sides of hundred-metre cliffs, and strange towers of rock appeared out of the morning fog. It looked just like the pictures in the China Art Museum. For a moment, I felt like I was inside a Chinese painting!

    "I'm the smartest kid in class." We all want our kids to be self-confident, but unrealistic perception(认知) of their academic abilities, a new study finds, damage a child's relationship with others in the classroom: The more one student feels unrealistically superior(更好的) to another, the less the two students like each other.

Katrin Rentzsch of Bamberg University in Germany first became interested in the effects of such self-perception when she was studying how people became labeled as nerds(书呆子). "I really got interested in the question of whether it's OK to boast(吹嘘) about achievements," she says.

    This line of thinking led her towards something psychologists call "self-enhancement" －when a person feels unrealistically superior to someone else. So Rentzsch and her colleague Michela Schroder-Abe decided to take a closer look at how such self-enhancement affects relationships, so they turned to the eighth-grade classroom, somewhere they could measure differences between actual academic performance, and social popularity. The 358 students came from 20 eighth-grade classes in schools in southeast Germany.

    The researchers asked each student to rate their classmates, in terms of their likability and of their feelings of academic superiority. They then compared those ratings with the students' grades in math, physics, German and English. Importantly, they conducted the analysis at two different social levels: "habitual"－the way people act in general, and "relationship"－the way someone acts around a specific individual.

    In future work, Rentzsch would like to look at these effects on adults, perhaps specifically in team work. She's also interested in self-enhancement beyond academic achievements, for example physical attractiveness. And another question to explore is why students overestimate their academic abilities. Perhaps it is because of too much praise from their parents or teachers.

Volunteer Chances for Teens

    About Learning Buddies

    Learning Buddies is an education program for K-5 students at the Beacon Hill, Columbia, Douglass-Truth, New Holly and West Seattle Library branches (分馆). Teen volunteers and kids read together, learn math and play educational games with support from librarians.

    If you are a high school student who enjoys math, reading and helping kids succeed in school, please consider volunteering as a Learning Buddy. You will get service learning experience and earn(获得) community service hours for school.

Learning Buddies teaches kids once a week. Volunteer chances are offered at the following Library branches, October through December and March through May.

    Beacon Hill Branch: Tuesday, 4:15 p.m. to 5:45 p.m.

    Columbia Branch: Thursday, 4:15p.m. to 5:45 p.m

    Douglass-Truth Branch: Tuesday, 4:15 p.m.to 5:45 p.m.

    New-Holly Branch: Tuesday, 4:15 p.m. to 5:45 p.m.

    West Seattle Branch: Tuesday, 4 p.m. to 5:30 p.m.

    Become a Learning Buddy

    High school students must be at least 14 years old and live close to a Library branch that offers the Learning Buddies program.

    You can ask for a volunteer application (申请书) and attend an interview at one of the following Library branches at least one month before the fall or spring Learning Buddies series.

    Beacon Hill Branch: call the Teen Services Librarian at 206-684-4711.

    Columbia Branch: call the Teen Services Librarian at 206-386- 1908.

    Douglass-Truth Branch: call Services Librarian at 206-684-4704.

    New-Holly Branch: call the Supervising Librarian at 206-386- 1905.

    West Seattle Branch: call the Teen Services Librarian at 206-684-7444.