Researchers around the world have been trying their hand at making better use of the huge amount of wind energy available in nature to produce clean energy. Apart from this, studies are being carried out to harness(利用) usable windenergy produced by man-made technologies.

    One useful source identified by Indian inventor Santosh Pradhan about two years ago is a speeding train, which produces fierce wind that can betrans formed into electricity.

    According to Pradhan's proposal, with a few small improvements in existing trains running in Mumbai, the largest city in India, at least 10,000 megawatts(兆瓦) of electricity could be harvested each day.

    Building on this principle, designers Ale Leonetti Luparinia and Qian Jiang from Yanko Design have created a device(装置) called T-Box that harnesses wind energy from speeding trains.

    T-Box can be placed within the railway tracks. It is half-buried underground between the concrete sleepers(水泥枕木), which does not disturb the normal train operating at all. According to Yanko, around 150T-Boxes can be fitted along a 1,000-meter railway track.

    A train running at a speed of 200 kph can produce winds blowing at 15 miles a second. Based on this calculation, 150 T-Boxes can produce 2.6 KWH of electricity per day. The T-Box's design won a silver medal in last year's Lite-On Awards and was exhibited last summer at the Xue Xue Institute inTaipei, Taiwan Province.

    Though the figures look impressive, it is important to remember that the design is still at a conceptual stage and hasn't taken into account issues such as pieces of waste material produced by the device and the efforts and costs involved in the maintenance(维护) of the device.

    We can expect the technology to see the light of the day only after it clears these issues. If so, rail travel, one of the greenest forms of travel, will become greener and more energy-efficient.

    Doctors say anger can be an extremely damaging emotion, unless you learn how to deal with it. They warn that anger can lead to heart disease, stomach problems, headaches, emotional problems and possibly cancer.

    {#blank#}1{#/blank#} Some people express anger openly in a calm reasonable way. Others burst with anger, and scream and yell. But other people keep their anger inside. They can not or will not express it. This is called repressing anger.

    For years many doctors thought that repressing anger was more dangerous to a person's health than expressing it. They said that when a person is angry, the brain releases the same hormones (荷尔蒙). They speed the heart rate, raise blood pressure, or sugar into the blood, etc. {#blank#}2{#/blank#}

    Some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger violently may be more likely to develop heart disease, and they believe that those who keep anger inside may face a greater danger of high blood pressure.

    {#blank#}3{#/blank#} They say the first step is to admit that you are angry and to recognize the real cause of the anger, then decide if the cause is serious enough to get angry about. If it is, they say, “{#blank#}4{#/blank#} Wait until your anger has cooled down and you are able to express yourself calmly and reasonably.”

    Doctors say that a good way to deal with anger is to find humor in the situation that has made you angry. {#blank#}5{#/blank#}

A. In general the person feels excited and ready to act.

B. They said that laughter is much healthier than anger.

C. Expressing anger violently is more harmful than repressing it.

D. Anger may cause you a cancer.

E. Do not express your anger while angry.

F. Anger is a normal emotion that we all feel from time to time.

G. Doctors say the solution is learning how to deal with anger.

    Do other countries' students also have so much homework? What do they usually do in their free time? You may feel curious about them.

    On April 8, a report came out on the lives of high school students in China, Japan, South Korea and the US. It surveyed around 6,200 students from the four countries last year. You will find the answers to many of your questions in this report.

    Who studies hardest?

    Chinese students spend the most time studying. Nearly half of Chinese students spend more than two hours on their homework every day. That's much more than the stud the US (26.496), Japan (8.2%) and South Korea (5.2%).

    Who sleeps most often in class?

    Japanese students fall asleep in class most often. About 45% of them said they sometimes doze off in class. In South Korea, it's 32%; in the US, 21%; and 5% in China.

    South Korean students don't like taking notes. About 70% said they write down what the teacher says in class, many fewer than in Japan (93%), china (90%) and the US (89%).

    Who is the most distracted (走神)?

American students are the most active in class, but also the most distracted: 64.2% said they chat with friends in class; 46.9% said they eat snacks in class; and 38.9% said they send e-mails or read unrelated books in class.

What do they do after school?

    In their spare time, most Chinese students study or surf the Internet. Most American students hang out with their friends. Most Japanese students do physical exercise. Most Korean students watch TV.

    It's said that you don't know a man until you walk a mile in his shoes. And you also don't know what it's like for older people to travel until you accompany one on a trip.

    After flying with my elderly father from Washington, D.C. to L.A. in July, I began to realize that a companion has important tasks that can make a journey easier for older people. I booked nonstop tickets on JetBlue to avoid tiring, confusing connections, and we flew directly into small, manageable Long Beach Airport. Even though my father could walk, I arranged with the airline for wheelchair assistance, which meant we got on board first.

    When I took him back to the airport for his return flight to Washington, I got permission from JetBlue to wait with him at the gate instead of saying goodbye at the security checkpoint. I wished he'd had a first-class seat and access to a comfortable airline club. Better yet, I wish I had flown with him both ways. As I watched the attendant wheel him to the lift that took him from the tarmac (飞机跑道) to the plane, I felt like an anxious mom sending her child to school for the first time.

    I didn't need to worry about my father wandering away; at 82, his mind was sharper than mine. But his hearing was poor, so I worried about what would happen if he missed an important announcement. Fortunately, everything went just fine. Careful planning made the trip successful.

    Next time I travel with a senior, I'll know better. I hope there will be a next time.

    If you are a teenager without a job, you probably do not have much extra money. Sometimes parents will give their children a pocket money for doing small housework, but it is often not enough once the children grow into teenagers and want to do things with their friends all of the time. How to make money is an important thing for teens to learn. If you're wondering how a teenager can make good money, some ideas might be:

    Getting a part-time job at a local restaurant or store is always a sure way to make money as a teen. But getting a job somewhere like this might be hard, considering many jobs in local stores are being taken by adults more and more often.

    Doing landscaping (绿化) is something that most adults do not like to do, and teens can usually find jobs around their neighborhood doing the landscaping of friends and family.

    Some teens are good at something such as writing or photography. These teens can make money by doing things such as writing articles for newspapers or magazines or selling their photos online.

    Teens who live in a country area can earn money by helping out on farms, or they can try raising their own animals such as chickens, and selling them or their products.

    Looking for jobs can seem hard at first, but if you have a try, it should not be too hard to find a job or way to make money.

Some Ohio high school students have become winners in a national contest (竞赛) after inventing a mobile phone app that helps needy families find local food pantries (公益食品仓库).

And someday the teens, who are students at Ross High School in Ross Township, may be selling the app to food pantries and food banks across America.

The app was created as part of a computer science class — coordinated (协调) by Butler Tech career school system at the high school. Three students, Jacob Kahmann, Gunner Nonnamaker and Kyle Inderhees, recently were visited by Congressman Warren Davidson, who praised their work. Davidson lauded the teens for creating "this app to set the standard for efficient food collection and distribution (分发)".

Butler Tech IT Instructor Tom O'Neill said the students' app includes characteristics that help users locate the nearest food pantry and improve food collection processes, and that the national contest provides a real-life learning chance for his students.

The students are continuing to make additions to the app and are working on turning it into a product, said O'Neill, who in recent years has helped many Ross High School teens win national honors for their computer-science-based inventions.

"The teachers and students in the Ross School District continue to amaze me with their future-thinking and creation," said Superintendent Scott Gates. "Our students are not only thinking about careers, they are thinking about problems they want to change, solve or improve. The app that was created will make serving a population in need more efficient."