The deadliest Ebola outbreak in history that has so far killed almost 1000 people in Guinea, Liberia, Sierra Leone and Nigeria in West Africa has caused fear around the world.

    The outbreak is unprecedented（空前的）both in infection numbers and in geographic scope. Officials from the World Health Organization (WHO) said earlier this month the outbreak “is moving faster than our efforts to control it”, reported CNN. So far, the battle against the virus doesn't appear to be slowing down.

    The Ebola virus is terrifying no matter where it strikes: It's a disease with no cure that causes headaches and fever, severe diarrhea(腹泻), vomiting and bleeding and has been known to kill up to 90 percent of its victims.

    It is understandable for people to be panicked, but those living outside Africa shouldn't be particularly concerned about contracting the virus, says a Washington Post article.

    This is because transmission of Ebola requires direct contact with an infected person's blood, vomit or other bodily fluids during the period that he or she is contagious(接触传染的). It is something that is extremely unlikely for anyone but healthcare workers. The virus is not spread by coughing or sneezing.

    Media outlets in the US and the UK are using terrifying headlines, wrongly claiming that people infected with the virus have traveled to their countries.

    James Ball at The Guardian says the Ebola outbreak in Africa is tragic, but it is important to keep a sense of proportion. Other infectious diseases, including common influenza, are far, far deadlier.

    Here's an interesting fact: Every teenager American seems to have, at some point, appeared drunk or rude online. This generation didn't invent stupidity, of course; it's just the first to post the picture online the entire world to see. And that's the rub: Employers are getting clever at looking you up online. They look at what people post and wonder. Is that new salesperson, the one who made a strange face on collegehumor.com,likely to do the same at a conference?”

    Anything that you put online is public information. This should seem pretty obvious to the generation who grew up on these sites, right? But it's not. When it comes to the Net, young people tend to fell for two traps. One:“ Many of them believe it's truly private, and they'll determine who gets to sec what, and it will stop there.” Wrong! And two: “Their sense of what things will be like in the next stage of their life is not realistic.”

    So what do you do about that picture? Take it down! But what if it is now on other sites? After all, a friend can post your photo elsewhere, and from there, it can be posted on another site. This problem is so common that a new industry has appeared: identity management, which helps people remove embarrassing material.

    The new industry serves to remind us that we've got to be careful out there. Most of us have got drunk or done something we regret. But putting it online is another matter. And for some, it's even become an addiction, one with a nickname: Crackspace. Young or old, students and managers alike turn into exhibitions, putting every aspect of their lives on public display(展示).

    Yes, it can be great fun. But should those of us posting pictures of ourselves dancing in our underwear be given a good comment? In a forgiving, kindly environment, yes. But what about in a business environment? Well, you decide.

    The iPhone the iPad: each of Apple's products sounds cool and has become a fad(一时的风尚). Apple has cleverly taken advantage of the power of the letter “i”—and many other brands are following suit. The BBC's iPlayer—which allows Web users to watch TV programs on the Internet—used the title in 2008. A lovely bear—popular in the US and UK一that plays music and vide is called “iTeddy”. A slimmed-down version(简装本) of London's Independent newspaper was stated last week under the name “i”.

    In general, single-letter prefixes(前缀) have been popular since the 1990s, when terms such as e-mail and e-commerce first came into use.

    Most “i” products are targeted at young people and considering the major readers of Independent's “i”, it's no surprise that they've selected this fashionable name.

    But it's hard to see what's so special about the letter “i” Why not use “a”, “b”, or “c” instead? According to Tony Thorne, head of the Language Center at King's College, London, “i”works because its meaning has become ambiguous. When Apple uses “i”, no one knows whether it means Internet, information, individual or intcractive, Thorne told BBC Magazines. “Even when Apple created the iPod, it seems it didn't have one clear definition,” he says.

    “However, thanks to Apple, the term is now connected with portability.” adds Thorne.

    Clearly the letter “i” also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs, and we love personalized products for this reason.

    Along with“Google” and “blog”, readers of BBC Magazines voted“i”as one of the top 20 words that have come to define the last decade.

    But as history shows, people grow tired of fads. From the 1900s to 1990s, products with “2000” in their names became fashionable as the year was connected with all things advanced and modern. How ever, as we entered the new century, the fashion disappeared.

    That robots, automation, and software can replace people might seem obvious to anyone who's worked in automotive manufacturing. But MIT business scholars Erik Brynjolfsson and Andrew McAfee's claim is more troubling and controversial. They believe that rapid technological change has been destroying jobs faster than it is creating them.

    They believe that technology increases productivity and makes societies wealthier, but it became clear to them that the same technologies making many jobs safer, easier, and more productive were also reducing the demand for many types of human workers. Technologies like the Web, artificial intelligence, and big data are automating many routine tasks. Countless traditional white-collar jobs, such as many in the post office and in customer service, have disappeared.

    As evidence, Brynjolfsson and McAfee point to a chart on which separate lines represent productivity and total employment in the United States. For years after World War II, the two lines closely tracked each other, with increases in jobs corresponding to increases in productivity. Then, beginning in 2000, the lines diverge; productivity continues to rise steadily, but employment suddenly shrinks. By 2011, a significant gap appears between the two lines, showing economic growth with no parallel increase in job creation.

United States Productivity and Employment

    But are these new technologies really responsible for a decade of lackluster (无生气) job growth? David Autor, an economist at MIT who has studied the connections between jobs and technology, doubts that technology could account for such a sudden change in total employment. Moreover, he also doubts that productivity has, in fact, risen steadily in the United States in the past decade. If he's right, it raises the possibility that poor job growth could be simply a result of a depressed economy. The sudden slowdown in job creation “is a big puzzle,” he says, “but there's not a lot of evidence that it's linked to computers.” “To be sure, computer technologies are changing the types of jobs available, but that is very different from saying technology is affecting the total number of jobs,” he adds. “Jobs can change a lot without there being huge changes in employment rates.”

    Lawrence Katz, a Harvard economist, says that while technological changes can be painful for workers whose skills no longer match the needs of employers, no historical pattern shows these shifts leading to a net decrease in jobs over an extended period. Still, Katz doesn't dismiss the notion that there is something different about today's digital technologies. Though he expects the historical pattern to hold, it is “genuinely a question,” he says. “If technology disrupts enough, who knows what will happen?”

    One of the first things that Jim discovered while living with the Greens was that there were different television channels(频道)in Britain, the BBC broadcasts on two channels: BBC1 and BBC2. There is a mixture of serious and light programmes on BBC1; there are mainly serious programmes on BBC2. ITV is an independent(独立的)channel which carries advertisements(广告). There are no advertisements on the BBC, so everyone must pay some money to the BBC each year. There are both serious and light programmes on ITV. Because of the different channels, it is not surprising that you often see each member in Mg. Green's house wants to choose his or her own favorite channel. This is the sort of thing you hear:

    "There's sports programme on ITV."

    "What's that, children?"

    "We were wondering if we could watch the sports programme on ITV."

    "But I was wondering whether to watch the other programme on BBC1." And so on. The children like ITV; mother prefers BBC1; father prefers BBC2. Jim hasn't made up his mind.

    Listed here are four of the thousands of impressive museums around the world.

    The Guggenheim Museum Bilbao in Bilbao, Spain

    Built in 1997, the Guggenheim Museum Bilbao is one of the newest in the world. It has transformed the industrial city of Bilbao into a travelers' desired destination. The beautiful architecture of the museum has provided a dramatic background for movies and commercials.

    The Louvre in Paris, France

    Probably the most famous Louvre also holds the most famous painting in the world, the "Mona Lisa" by Leonardo da Vinci. Crowds can be found any day surrounding the small, but mysterious painting of the smiling woman. But, the Louvre is much more than a home to the "Mona Lisa". The Louvre is visited by more people each year than any other museum in the world.

    The Barnes Foundation in Philadelphia, America

    Just opened in its new downtown location in 2012, the Barnes Foundation is "unique" in that it is a completely reproduced display from one man's private collection. Dr. Albert C. Barnes started collecting art in the early 20th century and collected, among others, the largest number of original Renoir paintings in the world.

    The Uffizi Gallery in Florence, Italy

    Walking on the marbled floors feels like stepping back in time. The building itself is a beautiful palace—like structure with frescoes(湿壁画) decorating the ceilings and walls. Viewers are bowled over(印象深刻) by the works by Botticelli, such as "The Birth of Venus". Classic artworks from nearly 1, 000 years ago describe religious events of the time.