An artist in Oakland, California is using his skills to help the homeless. Greg Kloehn builds very small shelters that make life on the streets a little more comfortable. The structures offer the homeless some safety and protection from bad weather. Each little house also has wheels on the bottom so it can go wherever its owner goes.

    Greg Kloehn has given away at least 20 tiny houses. Several are on the roadside near an active railroad. On a recent day, Mr. Kloehn stops at one to visit Oscar Young. The two men hug. Inside his little shelter Mr. Young gets relief from cold nights on the streets. Mr. Kloehn also visits Sweet-Pea, another friend who also lives in one of the little homes the artist built. She says it keeps her safe and protects her belongings.

    In the mornings, Mr. Kloehn searches the streets for building materials. He gathers what he can and takes it to his studio. There, he puts the houses together. Empty coffee bags become roof material. A washing machine door and refrigerator part become windows. Nails, screws and the sticky glue hold all the pieces together. The artist also attaches a small electrical device to the house. The device is powered by the sun.

    Some of the people living on the streets once had normal houses of their own. But some of the people say they have learned to live with less and they are thankful to that man.

    Mr. Kloehn says his work is not a social project. He says he is just someone using his skills to help his homeless neighbors.

    Many foreign students report feeling lonely or unwelcome in Australia. Those feelings are among the reasons why Australia is taking a close look at its international education industry. But wherever international students go, making friends may not always be easy. Elisabeth Gareis of Baruch College in New York surveyed 454 international students. They were attending four-year colleges and graduate schools in the American South and Northeast.

    Students from English-speaking countries and from northern and central Europe were more likely to be happy with their friendships. But 38% of the international students said they had no close friends in the United States. And half of the students from East Asia said they were unhappy with the number of American friends they had. Thirty percent said they wished their friendships could be deeper and more meaningful.

    Professor Gareis says, “Students from East Asia have cultures that are different on many levels from the culture in the United States. There are also language problems, and maybe some social skills, such as small talk, which are possibly not as important in their native countries, where it's not as important to start friendships with small talks. Many East Asian students blamed themselves for their limited friendships with Americans, for not speaking the language well enough and for not knowing the culture well enough.

    VOA's Student Union blogger Jessica Stahl did her own survey to find out how American students and foreign students relate to each other. More than 100 students, about half of them American, answered her online questions.

Half of the international students and 60% of the Americans said they related as well or better to the other group than to their own group.

    Professor Gareis says: "International students who make friends with host nationals are, overall, more satisfied with their stay in the host country. They have better language skills, they have better academic performance and they have better attitudes toward the host country."

    Energy goes from one plant or animal to another. A food chain shows how this energy moves. Each time an animal gets eaten, its energy is passed onto the animal that eats it. The food chain is very important because it keeps the balance of nature. If one part of the food chain disappears, it can affect all the other plants and animals. Any threat to the food chain is a threat to the environment's biodiversit(生物多样性). The food chain helps keep animal populations in balance. However, if something happens to increase or decrease one of the links in the food chain, that balance is broken. If one animal becomes endangered, it puts all the animals above it at risk.

    Some of the threats are natural, such as wildfires, hurricanes, tornados, floods and so on. But the biggest threats to the food chain come from you and me. These threats include overhunting, overfishing, logging, farming, development, pollution, etc. The food chain is endangered anywhere humans have had an effect on the natural environment.

    A recent study shows that the overfishing of large sharks is damaging the food chain along the US Atlantic coast. Canadian and American scientists say sharks are being killed in great numbers for their meat and fins(鳍). Now, not enough sharks are around to eat the cownose(牛鼻) ray. The ray's population has increased and they have eaten up the shellfish to the point where it has hurt commercial(商业的) fishing.

    Many of us disturb the natural environment in our own backyards. It's up to us to take care of the environment and try not to disrupt the natural food chain. If we don't act responsibly, animals will start disappearing.

    If it had not been for Fan Jinshi and her team, the world cultural heritage at Dunhuang Mogao Grottoes in a remote Chinese desert might have long been destroyed by sand, weather or humans.

    Born and raised in Shanghai, Fan has spent half a century fighting an uphill battle to preserve the ancient Buddhist wall painting at Dunhuang, in Northwest China's Gansu Province. The 1,651-year-old Dunhuang Mogao Grottoes are a huge collection of Buddhist art—more than 2,000 buddha figures and 45,000 square meters of paintings spread among 735 caves. It is China's first UNESCO World Heritage Site.

    Archaeologist Fan was sent to Dunhuang after graduation from Peking University in 1963. While in Dunhuang, a remote village in the desert then, Fan lived in an abandoned temple. At first, she did not even dare to go out to the toilet at night. To protect the treasures from sand and dampness, Fan and other workers put doors on the caves, planted trees and started monitoring temperature and humidity in the caves. They also controlled the number of visitors.

    In the late 1990s, with tourism booming nationwide since national holidays were extended, the local government planned to go public with Dunhuang Mogao Grottoes, but found Fan firmly in their way. “The heritage would have been destroyed if it had been listed,” she said.

    Dunhuang Academy has now photographed and cataloged online all the sculptures and paintings. “Despite our efforts to minimize damage, we can't completely stop them from being eroded. But the digital database will last.”

    Fan was grateful when her husband joined her in Dunhuang in 1986 after 19 years of separation. Her two sons grew up in Shanghai with their aunt.  “I have not been a good mother or wife. With regard to my family, I'm full of guilt,” she said. Fan, 79, retired two years ago as the director of Dunhuang Academy but continues her efforts as a national political adviser.

    I've always felt a need to be prepared for whatever situation I've found myself in.

    My mother once took me to a store when I was seven years old. She and I got to the checkout counter, and she realized she had forgotten a couple of things on her shopping list. She left me with the cart and ran off to get what she needed.

    "I'll be right back." she said.

    She was gone just a few minutes, but at that time, I had loaded all the things on the belt and everything was rung up. I was left staring at the cashier, who was staring at me. "Do you have money for me, son?" she said. "I'll need to be paid."

    I didn't realize she was just trying to please herself. So I stood there, ashamed and embarrassed.

    By the time my mom returned, I was angry. "You left me here with no money! This lady asked me for the money, and I had nothing to give her."

    Now that I'm an adult, you'll never catch me with less than $200 in my wallet. I want to be prepared in case I need it.

    I've always admired people who are over-prepared. In college, I had a classmate named Norman. One day he was giving a speech on an overhead projector(投影仪) and in the middle of his talk, the light bulb（灯泡）on the projector blew out. We would have to wait ten minutes until someone found a new projector.

    "It's Okay." he said. "There's nothing to worry about."

    We watched him walk over to his bag and pull something out. He had brought along a spare(备用) bulb for the overhead projector. Who could even think of that?

    I often told my students, "When you go into the wilderness, the only thing you can depend on is what you take with you." And essentially, the wilderness is anywhere but your home or office. So take money. Pack a light bulb. Be prepared.

More than half of the 1,000 consumers surveyed by Credit Karma said they have impulsively(冲动地) shopped to deal with feelings of stress, anxiety or depression. Twenty-three percent of respondents said they've maxed out (刷爆) a credit card in the past year.

As for age, 68 percent youngsters, responded by saying they have experienced it in the past, compared to 53 percent of the middle-aged and only 26 percent of the old

In regards to genders, 48 percent of men and 31 percent of women who have stress spent said they had purchased alcohol when stressed. Eighty-two percent of women stress spent on clothing compared to 52 percent of men. Women also lead stress spending for jewellery, 42 percent, compared to 22 percent for men with men stress spending more for electronics 44 percent while 30 percent for women.

In fact, shopping to reduce stress can actually help you live a healthier life by making sure that your blood pressure is lowered. Shopping to relieve stress is also called shopping therapy (疗法) as a form of reducing stress.

The survey found that that 82 percent had only positive feelings about their purchases and that the positive mood boost that followed those purchases was long-lasting.

However, the side effect of shopping therapy, for many, can start out as a relatively harmless mood booster but could possibly grow into a financial loss, cause conflict, and therefore add a large amount of stress to a person's life.