Lying alongside mountains of smelly garbage under the South American sun, Cateura is a long way from the conservatories of Prague or Vienna. Yet the township, which grew out of Paraguay's largest dump(垃圾场), is gaining a reputation as a hothouse for musical talent and for its youth orchestra(管弦乐队) that plays instruments made from garbage. "The world sends us garbage. We send back music," says Favio Chavez, leader of the "Recycled Orchestra," during a recent visit by the group to Los Angeles. Orchestra members, poor children from Cateura, play violins fashioned from oven trays and guitars made from dessert dishes. The orchestra provides the youngsters an outlet and an escape, a chance to go beyond the mess of their slum(贫民窟) through the music of Mozart, and even Sinatra. "In the beginning, it was difficult to play," says the l0-year-old violinist Celeste Fleitas." But Favio helped me learn over time. From Favio, I have learned to be more responsible and value the things I have."

    The destination for more than 1,500 tons of waste each day, the community has no safe drinking water and little access to electricity or sanitation(卫生设施). Illiteracy is severe, and the children of the township often fall into drugs, violence and crimes.

    Favio Chavez, a musical talent, came to Cateura as an environmental technician in 2006 and started a youth music school. He knew shop-bought instruments were beyond the means of villagers whose sheds are worth less than a violin, so he approached a carpenter to make some out of waste from the dump.

    The orchestra caught the eye of Paraguayan filmmaker Alejandra Amarilla. She uploaded a short piece of the orchestra to YouTube in 2012, hoping to secure crowdfunding for what would become Landfill Harmonic, a documentary released across the United States this month and promoting the youngsters on a tour of the world's music halls later on.

    For years,Hagelin has studied what role scents（气味）play in wild birds' behavior.In 2010,Hagelin heard Jan Straley,a marine biologist,talk about the behavior of whales.Straley mentioned that whales often leap into the air,but nobody knew why.

    The mystery interested Hagelin.So Hagelin asked Straley whether they might leap to smell the air—maybe to locate food or look for danger.Straley replied that it was an interesting idea but there wasn't much evidence that whales have a sense of smell.To investigate the idea further,the two scientists teamed up.

    In the summer of 2011,they set up a post on the coast of southern Alaska.The researchers spent hours monitoring the direction of the whales and of the wind.The whales headed into the wind half of the time.This didn't prove that whales leap to smell,but it suggested that it is possible.

    Meanwhile,other researchers in Alaska were studying a region of the brain called the olfactory bulb（嗅觉球）in whales.Olfaction means the ability to smell.Humans also process smells in the olfactory bulb.

    In identifying a scent,you might think the nose does all of the work.However,the major role of a nose is to draw chemicals on the air and pass them across sensing cells.As chemicals come into contact,they give signals that travel directly to the bulb and then in the brain for further interpretation.

    The researchers discovered that the bulb in a whale was more complex than the one in a human.In whales,this smell-processing center takes up a share of the brain six times larger than it does in humans.

    The brain research suggested that whales probably can smell just as well as people—and possibly better than humans can.It is supposed that a good sense of smell could help them find food more easily.

    However,Hagelin is not sure of that.Now he is planning a new study that will examine whether whales do use the sense of smell to find food.

                                                                                           Taktak tabulaba?

    You probably don't know how to answer that question ─ unless you happen to be one of the about 430 people in the world who speak a language called Matukar Panau. Then you would know it means “ What are we doing?” Matukar Panau is one of the world's rarest languages. It is spoken in just two small coastal villages in Papua New Guinea.

    Several years ago, David Harrison, a language expert, didn't know much about Matukar Panau either. No one had ever recorded or even studied its words and rules. With so few speakers, the language risked disappearing soon. It was endangered.

    Harrison didn't want that to happen to Matukar Panau. So in 2009, he set out for Papua New Guinea. His goal: use modern technology to help the remaining speakers preserve their native tongue.

    But Matukar Panau is not the only language facing loss. Studies suggest that by the end of this century，nearly half of the 7,000 languages now spoken worldwide could disappear. They're in danger partly because the only people left speaking them are elderly adults. When those old men die, their language will die with them. In addition, children may discard a native language and instead use more common global languages, such as Chinese, English or Spanish.

    In the United States alone, 134 native American languages are endangered. “Language hotspots” exist all over the world. These are places with endangered languages that haven't been recorded. They include the state of Oklahoma, pockets of central and eastern Siberia, parts of northern Australia and communities in South America.

    Six months ago,Jack came to china to study.He has heard that Yanghou is famous for its gardens. And he plans to visit some gardens in July, so he has collected information about them online as follows:

    The Slender West Lake named National AAAAA Tourist Area in 2010, includes the Great Rainbow Bridge, the White Pagoda, Five-pavilion Bridge, the Twenty-four Bridge, the Small Golden Hill and so on. The best time to tour the Slender West Lake is in March. During the visit to the park, the boat travels on the water and visitors travel in the picture.

    Ticket: Mar. - May. ¥ 150; Other months ¥90

    Time: 8:30 - 17:00

    Bus: No. 4, 5, 6, 17, 61 buses

    Tel: 0514-87357803; 0514-87370091

    Website: http://www.shouxihu.com

    Ge Garden, one of the four lop famous Chinese gardens, got its name from bamboo. The bamboo in the garden forms the green scenery. The centre of the garden is well known for man-like hills. Four seasons can be experienced here at a time.

    Ticket: Mar. - May. ¥ 10; Other months ¥30

    Time: Mar. - May. 7:15 - 18:00; Other months 7:15 - 17:30

    Bus: No. 8, 30, 61 buses

    Tel: 0514-87935285

    Website: http://www.gy-garden.net

    He garden, the most famous garden in the late Qing Dynasty, is known for its long double-way corridor(走廊), which is regarded as the earliest footbridge.

    Ticket: Mar. - May. ¥ 40; Other months ¥30

    Time: 7:30 - 17:15

    Bus: No. 19, 61 buses

    Te: 0514-87900345; 0514-87222353

    Website: http://www.he-garden.net

    Eating is best when it's a social activity. Think of the meal a family enjoys in the evening when everyone's together after work or school, or the big get-togethers over food at Spring Festival. But now, in the age of the Internet and social media, anyone with an Internet connection can enjoy a social eating event.

    Mukbang-a South Korean phrase meaning “eating broadcast”-is an unusual food fanaticism that's sweeping the country. This is a meal where only one person gets to eat, while many viewers watch live shows of hosts eating large quantities of food. They leave comments on the dishes the host is taking, and the host responds to them live.

    So why have people taken to this unusual new food trend(趋势)? Jeff Yang, an Asian-American cultural critic, thinks that it's down to “the loneliness of unmarried or uncoupled South Koreans”. He believes that eating on your own can be hard in a country like South Korea, where social eating is such a long tradition. However, Mukbang gives people the feeling that they are part of something larger, it seems.

    Millions of people have trouble with food. Either they eat too much of it, or too little. Some say that the popularity of Mukbang helps people with these disorders. Those who always eat too much and put on weight can watch Mukbang live shows to satisfy their appetite (胃口). And those who don't eat enough can build their appetite by watching delicious food being eaten.

    Even though Mukbang is a South Korean phenomenon, it's also taken off in the US. But unlike South Koreans who sit down to enjoy noodles and kimchi (泡菜), Americans enjoy their own native dishes. This means that viewers of US Mukbang live shows will see locals stuffing themselves with hamburgers, fries and ice cream.

    My first term at MIT（麻省理工学院）was awesome—I got all A's, and I declared math as my major. My parents were expecting me to become a doctor like them so I was trying to satisfy them. But I was desperately running away from them. I had no idea what I wanted to do with my life. My third term, I ended up with a D in math. I didn't do that well in my other classes, either. It seemed like all my friends were doing so well, getting opportunities over the summers.

    My fifth term, I realized that I was awful at higher-level math. I had lost all confidence in myself. I went to a few classes at the beginning of the term, but after by midterm, I had totally stopped. My only relief was the dance team I was on. I would sleep all day, and then go to dance practice, and then go back to sleep. As expected, I failed in all of my classes and had to withdraw from MIT.

    I had no choice but to tell my parents. Instead of yelling or hitting me, though, they just held me and cried. The next day, my dad took a day off from work and took me to a nearby, small arts college.

    I had lost all confidence in myself. Before my first biology test, I didn't think I could pass. I did pass. Since I had so much free time, I decided to join a biology lab. I realized that was what I wanted to do! I wanted to be a scientist!

    This past May, I graduated with the highest honors, and now I have my PhD in biology. Though it ended up taking me 5 years to graduate from college, I can say now that dropping out of MIT was one of the best things that ever happened to me. I've realized that a person is not their grades. I've realized how much my parents loved me. I've finally discovered my passion（热情）in life!