If you are interested to find a part time job or learn something different during your spare time, you can have a look at the following jobs offered by the DC Public Library.

Teens of Distinction Program

    The DC Public Library offers part time jobs for teens through the Teens of Distinction Program. Teens work 10-12 hours per week all year long, helping the library with important tasks and projects. The Teens of Distinction Program is now hiring! To apply, you have to：

● be a DC resident

● have and maintain at least a 2.5 grade point average

● be 16 to 18 years old

● be able to work 10-12 hours per week

● be able to work for DCPL for at least 9 months

Oh, and of course you have to impress us with your wonderful personality!

Teen Volunteer Opportunities

    If you want to earn community service hours for school, Youth202 is a good choice.

    Youth202 is a radio program created by youth and for youth. You can learn radio production skills, interview people around you, and help keep other teens to learn news, events, and anything else you think is important.

Summer Youth Employment Program (SYEP)

    Every summer, teens can work here to help library customers organize books and learn lots of new skills, such as program planning, writing and media production.

    On Friday, January 25 at 12:15 pm, the application for the 2014 SYEP will be open to teens between the ages of 14 and 21.

    Applications will be processed on a first come, first served basis. Space is limited this year, so teens are encouraged to apply early, and remember not to miss the deadline, Saturday, February 16.

    After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.

    Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.

    The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf – grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park's red foxes, and completely drove away the park's beavers.

    As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.

    The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone .Elk, deer, and coyote populations are down, while beavers and red fores have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.

    Spend any time in London, England's capital, and you'll quickly gather that it's a multicultural (多元文化的) community. Look around at your fellow passengers on the Tube（地铁）or the bus. They're of every skin color and dress differently to one another. Listen, and you'll hear many other languages besides English spoken. Some of these people, no doubt, will be tourists who are in London to see the sights. But others – in fact probably most – will be living their lives there, along with millions of others.

    Along with white British people, there are Britons from, or with parents and grandparents from, the Caribbean, India, China and most other places. This makes London a fascinating place in which to live. The reason is that when people settle in a place, they don't just buy a house and live there, but bring aspects of the culture of their “old country” with them.

    The most visible sign of this is the number of restaurants offering dishes from different parts of the world. In a city in which it's estimated 250 different languages are spoken, you can expect a similarly wide range of foods to be available. You would expect in one of the world's leading cities to encounter(遇到) French, Italian, Chinese and Indian eateries. But in London you'll also find Polish, Patagonian and Palestinian restaurants.

    However, London's multiculturalism isn't just about food. Many types of people are gathered in one space, but the way they live differently shows in that space. They worship(崇拜)differently, for one thing. Alongside the famous old English churches by Nicholas Hawksmoor and Christopher Wren – responsible for one of the capital's most famous landmark, St Paul's Cathedral—you'll find mosques(清真寺), temples and synagogues (犹太教堂).

      London even speaks its own special kind of English. Language experts created the term “Multicultural London English” to identify the dialect of English that appeared at the end of the last century.

    All of this makes London a very surprising and varied place to call your home. But, in a way, this has long been true. In the 18^th century, the compiler(编纂者) of the first English dictionary, Samuel Johnson, once said: “ He who is tired of London is tired of life.”

    The following notice is posted in the bus station.

    Time Table:

    Buses leave the Railway Station, New York City, from 7:00 am and every half-hour there after, until 11:30 pm (7 days a week)

    Buses leave Brennan Station 20 minutes before and after every hour from 6:20 am to 11:40 pm (7 days a week)

    Evening rush hours (5:00 pm to 7:00 pm): Buses leave the Railway Station, New York City every minutes. (Monday- Friday)

    Holidays Buses leave every hour on the hour, each direction. (Trip time: 30 minutes each way)

    All tickets must be bought at Window 12, the Railway Station, New York City, or at the Brennan Station Window BEFORE boarding buses.

Plastic-Eating Worms

    Humans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.

    Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms' chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms' stomachs. Their findings were published in Current Biology in 2017.

    Federica Bertocchini, co-author of the study, says the worms' ability to break down their everyday food — beeswax — also allows them to break down plastic. “Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well,” she explains, “The wax worm evolved a method or system to break this bond. ”

    Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?

    Bertocchini agrees and hopes her team's findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply “millions of worms thrown on top of the plastic.”

    Amy Pankratz spent a few nights in the hospital with her daughter, Isabella, who caught a bad flu. “Lying in bed beside Isabella, I could hear the cries of children in pain, ”says Amy. “It completely broke my heart. ”

    When Isabella was getting well and could leave her room, she wore her prized possession—a “superhero cape(短斗篷)”Amy had sewn to encourage her—and walked into the hallway. The pink cape was an instant hit with the other young patients, who were doing exercise around the nursing station. “Then, all the kids were taking turns wearing the cape, giggling, ”Amy says. “These were some of the same children I had heard crying the night before, and here they were playing and having fun—kids just being kids! ”

    From that moment on, Amy began making Comfort Capes for little ones battling with serious illnesses. “I felt God presenting an opportunity, ”she says. “I hoped Comfort Capes can help these kids feel brave, to lift some of the fear away. ”

    Since then, Amy has made and donated more than 5, 000 capes in the United States. Amy usually pays for materials herself, although she accepts donations.

    The capes she makes for kids in treatment are different from those her own children have. Before Amy starts to sew she learns what image or character the little boy or girl connects with. “ I choose the pattern, color and theme specially for each child,” explains Amy.

    When she is not sewing, Amy is raising awareness of childhood cancers and looking into ways to get Comfort Capes to more kids who need them, “ If a cape can help a child, even only for a moment, forget his illness, it's worth the time spent sewing,” she says.