While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.

The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn't just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.

         Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.

Fellow Robots is one company bringing social robots to the market. The company's “Oshbot” robot is built to assist customers in a store, which can help the customers find items and help guide them to the product's location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.

          The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees. “We have technologies to train social robots to do things not for us, but with us,” said Breazeal.

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                                                                                                     What's On?

Electric Underground

7.30pm－1.00am   Freeat the Cyclops Theatre

Do you know who's playing in your area? We're bringing you an evening of live rock and pop music from the best local bands. Are you interested in becoming a musician and getting a recording contract(合同)? If so, come early to the talk at 7.30pm by JulesSkye, a successful record producer. He's going to talk about how you can find the right person to produce you music.

Gee Whizz

8.30pm-10.30pm  Comedy at Kaleidoscope

Come and see Gee Whizz perform. He's the funnieststand-up comedian on the comedy scene. This joyful show will please everyone,from the youngest to the oldest. Gee Whizz really knows how to make you laugh!Our bar is open from 7.00pm for drinks and snacks(快餐).

Simon's Workshop

5.00pm-7.30pm   Wednesdays at Victoria Stage

This is a good chance for anyone who wants to learnhow to do comedy. The workshop looks at every kind of comedy, and practicesmany different ways of making people laugh. Simon is a comedian and actor whohas 10 years' experience of teaching comedy. His workshops are exciting andfun. An evening with Simon will give you the confidence to be funny.

Charlotte Stone

8.00pm-11.00pm    Pizza World

Fine food with beautiful jazz music; this is agreat evening out. Charlotte Stone will perform songs from her new best-sellingCD, with James Pickering on the piano. The menu is Italian, with excellent meatand fresh fish, pizzas and pasta(面食). Book early to get atable. Our bar is open all day, and serves cocktails, coffee, beer, and whitewine.

    As global temperatures rise, trees around the world are experiencing longer growing seasons, sometimes as much as three extra weeks a year. All that time helps trees grow faster. For the past 100 years, trees have been experiencing fast growth in temperate regions from Maryland to Finland, to Central Europe, where the growth rate of some trees has even sped up nearly 77% since 1870. Assuming wood is just as strong today, those gains would mean more timber(木材) for building, burning, and storing carbon captured from the atmosphere. But is wood really as dense as it used to be?

    Hans Pretzsch, a forest scientist at the Technical University of Munich in Germany, and his colleagues wanted to find an answer. They carried out a study of the forests of Central Europe. They started with 41 experimental plots in southern Germany, some of which have been continuously monitored since 1870. Pretzsch and his team took core samples from the trees—which included Norway spruce, sessile oak, European beech, and Scots pine—and analyzed the tree rings using a high-frequency probe.

    They found that in all four species, wood density has decreased by 8% to 12%, they report online in Forest Ecology and Management. “We expected a trend of the wood density like this, but not such a strong and significant decrease,” Pretzsch says. Increasing temperatures, and the faster growth they spur, probably account for some of the drop. Another factor, Pretzsch says, is more nitrogen in the soil from agricultural fertilizer(化肥) and vehicle exhaust. Previous studies have linked increased fertilizer use to decreased wood density. Above all, the study suggests that the higher temperatures—combined with pollution from auto exhaust and farms—are making wood weaker, resulting in trees that break more easily and wood that is less durable.

    “I am getting worried,” says Richard Houghton, an ecologist at the Woods Hole Research Center in Falmouth, Massachusetts, who was not part of the new study. As the density of the samples dropped, so did their carbon content, by about 50%. That means forests may suffer more damage from storms and may be less efficient at soaking up the greenhouse gas carbon dioxide (CO2) than scientists had thought, Houghton says.

    Have you ever wondered what the longest word in the English language is? Believe it or not, there's no simple answer to the question. You might think it would be as easy as opening a dictionary and looking for the longest word. However, it's far more complicated (复杂的) than that.

    Over time, many people have suggested many different words for the title of the longest word in English. How can that be? That's because the first thing that people have different opinions on is what should be considered a word. Some of the words were simply made up to be the longest! For example, there is one really famous long word that most kids know. It comes from Disney's movie Mary Poppins: supercalifragilisticexpialidocious, which means wonderful. But since that 34-letter word was made up simply to be sung as a song in a movie, should it count?

    How about long words that actually describe something in the world? Scientists have come up with several possible choices. The name of a virus(病毒) totals 1,185 letters. There's also a protein(蛋白质) whose name totals 1, 909 letters. Should these win the title? "Not so fast!" say some people. Are these words ever actually used? Can they even be pronounced? And are they meaningful just because they are made up to be long?

    If you're wondering about some long words in common English, here are some examples. Those words include uncharacteristically (20 letters), deinstitutionalization(22 letters) and counterrevolutionaries (also 22 letters) Or perhaps the word "smiles" is the longest word in English. Sure, it has only six letters, but there is a "mile between the first and the last letters!

    Why not consider spending the holiday at Harvard if you are a high school student who will have a holiday in this coming summer?

    About the program

    This is a five-week program^ from July 16 to August 17, 2018, which is designed to help high school students to pave the way for a successful college experience. We have 200-plus courses, such as film, philosophy, creative writing, and computer science. Besides, we offer you two types of credit courses—4-credil course and 8-credit course. You can earn college credit here. Whether you choose to sign up for one or two courses, you will still have some flexibility (灵活性) to schedule your days'.

    Tuition and Fees

    Application fee (the application period opens in December): $50

    Tuition: $3,300 for 4-credit course;

    $6,600 for 8-credit course

    Housing (room and board) fee: $5, 700

    Health insurance fee: $200

    Financial Aid(援助)

    Financial aid is a scholarship award. It is available to Secondary School Program students with excellent academic records who give evidence of financial need. It does not have to be paid back. Awards cover only a part of the program cost. Families should expect to contribute to the remaining part. Award amounts are determined by many sides, including family finances, availability of fund (基金), and whether students are resident. ... Local students may be eligible (有资格的) for additional funding towards room and board.

    Do you like to show off your expensive items? You could find yourself without friends! Scientists prove that expensive status symbols make you look less socially attractive.

    Items such as a fancy car and a Rolex watch are often thought to increase our social standing(地位) and often come with a high price tag(标签).According to the latest research, however, it has the opposite effect and people would prefer to be friends with someone who places less value on material objects.

    "Often we think that status symbols will make us look more socially attractive to others," says Stephen Garcia, the study's leading author from the University of Michigan. He adds, "However, our research suggests that these status signals actually make us look less socially attractive.

    The researchers conducted six studies which assessed how people presented themselves and how people viewed strangers. People who chose to wear higher status items tended to get a negative response, but people wanted to be friends with people who preferred lower status symbols.

    The study took the role of the luxury(奢侈) item to see if it was possible that the expensive item itself played a part in people's reactions. The definition of a status symbol changed based on a person's socioeconomic status, but the same effect of keeping off potential friends was seen regardless of social position.

    "At a social level, we may be wasting billions of dollars on expensive status symbols that finally keep others from wanting to associate with us, "says Kimberlee Weaver Livnat at the University of Haifa. She says, "And to the extent that close friendships are important to well-being, and we may be unintentionally hurting ourselves."

    However, Patricia Chen of the National University of Singapore said this does not necessarily mean status symbols are a bad thing. She says, "Our findings right now only apply to the formation of new friendships. Status symbols may be beneficial at other times and in other settings, such as when trying to establish new business contacts."