Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives (蜂窝)—either recorded or real—may even prevent elephants from damaging farmer's crops.

    In 2002, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today, Lucy wants to see if African honeybees might discourage elephants from eating crops. But before she asked farmer to go to the trouble of setting up beehives on their farms, she needed to find out if the bees would scare elephants away.

    Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next，Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a tree close to each family.

    From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy played the sound of a waterfall (瀑布) instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place.

    Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know, but her initial (最初的) results were promising enough to begin trials with farmers. She has now begun placing speakers in the fields to see if elephants are frightened away.

    Mass media are tools of communication.Mass media allow us to record and pass information rapidly to a large，scattered(分散的)audience.They extend our ability to talk to each other by helping us overcome barriers caused by time and space.

    There are various ways in which mass media make daily life easier for us.

    First,they inform and help us keep a watch on our world. They gather and pass on information we would be unlikely or unable to get on our own.

    Second，mass media help us to arrange our time and life.  What we talk about and what we think about are greatly influenced by the media.When people get together，they tend to talk about certain happenings in the newspapers or on TV.Because we are exposed(暴露)to different points of view through different kinds of media every day，we are able to evaluate(评价)all sides of a certain issue.

    Third,the media are used to persuade people. A good example is advertising through the media.Newspapers，magazines and TV are filled with all kinds of colorful，persuasive advertisements.Though many advertising may not say openly that they want you to buy a certain product，they describe their products in such a way that you may want to buy them.

    Fourth,the media also entertain.  All of the media make some efforts to entertain their audience.For instance，even though the newspaper is primarily a medium of information，it also contains entertainment features(特征)．Television，motion pictures，fiction books and some radio stations and magazines are devoted mainly to entertainment.It is estimated that in the future，the entertainment function of mass media will become even more important than it is now.

    Business administration is the most popular undergraduate major in U.S. colleges and universities, accounting for as much as one-fifth of all bachelor degrees awarded each year. Students naturally think of a business degree as the surest way to land a good job after graduation. Many international students agree. Twenty percent studied business last year-the second most popular major after engineering, according to the Institute of International Education.

    Below are descriptions of three of U.S. colleges and universities with strong offerings in business.

    Bentley College    Waltham, Massachusetts

    Bentley offers its 4,000 undergraduates a top-flight business education and an equally strong liberal-arts program that leaves them well-prepared to join the ranks of future business leaders. The college occupies a scenic campus only a shuttle-bus ride from Boston's Harvard Square. More than 90 percent of students seek career-oriented internships（实习）.

    Bucknell University    Lewisburg, Pennsylvania

    Bucknell's 3,500 undergraduates benefit from small classes and an engaging staff at this liberal-arts institution in a remote but beautiful campus in central Pennsylvania. Accounting and financial management are specialties in the introductory management course that create and sell a product and then donate their profits to charity（慈善）.

    University of Cincinnati        Cincinnati, Ohio

    This urban university with 21,000 undergraduates, located a mile from downtown Cincinnati, was the-birthplace of cooperative education over a century ago. Under this five-year “earn while you learn” program, more than 3,000 students alternate academic study with internships in local businesses and other organizations.

    Like many children, young Lotte Reiniger was crazy about movies, which at the time were a completely new invention. She taught herself how to cut paper silhouettes（剪影）, of people, animals, and objects. I could cut silhouettes almost as soon as I could manage to hold a pair of scissors, Reiniger said. “I could paint, too, and read...But everybody was surprised at the scissor cuts”

    At first, Reiniger wanted to be an actress, but her skill at making silhouettes drew the attention of the German film industry. Before 1927, films were silent. To help the audience understand the film, title cards with printed text appeared during the film between scenes. Reiniger helped create title cards for films, using her silhouettes. In 1918, she was asked to provide stop-motion animation（定格动面）, in which objects are photographed（拍摄）in a series of slightly different positions and then replayed at high speed so that the objects appear to move on their own, for wooden rats（老鼠）in the movie The Pied Piper of Hamelin. It was a breakthrough that led to her own films, first short films and then, in 1926, The Adventures of Prince Achmed, the first full-length animated film.

    Although Reiniger once described herself as “a primitive（原始的）caveman artist”, her work is not simple. She carefully cut bits of card, paper, and wire, creating wonderful shapes, and then made them move and dance by hand. The black shapes were then placed on colorful backgrounds. She made more than 60 films, around 40 of which survive, all cut by her own hands. Most were based on timeless fairy tales, like Cinderella and Sleeping Beauty.

    Reiniger was truly a pioneer both in animation and for women in film-making. Though her last film came out in 1980, her style is still influential and can often be seen in today's films.

    "A photograph that one has taken of oneself, typically with a smart phone or webcam and uploaded to a social media website" is the definition of "selfie" in the Oxford English Dictionary. In fact, it wasn't even in the dictionary until August of last year. It earned its place there because people are now so obsessed with (对……痴迷) selfies—we take them when we try on a new hat, play with our pets or when we meet a friend whom we haven't seen in a while.

    But is there any scientific explanation for this obsession? Well, you should probably ask James Kilner, a neuroscientist(神经系统科学家) at University College London.

    Through our lifetime we become experts at recognizing and interpreting other people's faces and facial expressions. In contrast, according to Kilner, we have a very poor understanding of our own faces since we have little experience of looking at them—we just feel them most of the time.

    This has been proved in previous studies, according to the BBC.

    Kilner found that most people chose the more attractive picture. This suggests that we tend to think of ourselves as better-looking than we actually are. To further test how we actually perceive our own faces, Kilner carried out another study. He showed people different versions of their own portrait—the original, one that had been edited to look less attractive and one that was made more attractive—and asked them to pick the version which they thought looked most like them. They chose the more attractive version.

    But what does it say about settles? Well, isn't that obvious? Selfies give us the power to create a photograph—by taking it from various angles, with different poses, using filters (滤色镜) and so on—that better matches our expectations with our actual faces.

    "You suddenly have control in a way that you don't have in non-virtual(非虚拟的) interactions," Kilner told the Canada-based CTV News. Selfies allow you "to keep taking pictures until you manage to take one you're happy with", he explained.

    People always think men are more skilled than women in driving. Nowadays women appear to have a positive image of themselves as safer drivers than men.

    In a survey done by insurer MetLife, 51% of women said they drive more safely. The evidence is on their side: Men are 3.4 times more likely than women to get a ticket for careless driving and 3.1 times as likely to be punished for drunk driving. "Women are on average less aggressive and more law abiding (手法的) drivers, which leads to fewer accidents," the report says. However, not all male drivers share the same opinion. Of the men surveyed by MetLife, 39% claimed male drivers were safer. The findings did back them up on one point: automotive knowledge. The report showed that more men are familiar with current safety equipment such as electronic stability control, which helps prevent rollover accidents.

    Auto safety unavoidably matters to money. Insurance companies focus on what classes of drivers have the lowest dollar amounts of claims, and for now, that mainly includes women. In general, women pay about 9% less for auto insurance than men. A study by the website Insweb also showed that auto insurance rates are lower for women in most states. Among individual states, women get the greatest advantage in Wyoming (where they pay 20% less), South Dakota and Washington, D.C., where their insurance costs are 16% lower.

    "More than 11, 9000 male drivers died in U.S. traffic accident in 2009, compared with just under 4,900 women drivers," according to the study. "Based on miles traveled, men died at a rate of 2.5 deaths per 100 million miles traveled, vs. 1.7 deaths for women."