Your next Saturday night takeaway could be brought to you by a robot after a major food delivery company announced plans to use automated vehicles to transport meals. Europe's biggest online takeaway food company Just Eat has partnered with Starship Technologies to deliver food with robots on the streets of London later this month. “Nobody has ever done deliveries with land-based robots,” said Allan Martinson, the chief operating officer of Starship.

    The robot courier can travel up to 4 miles per hour for about 10 miles. It uses a GPS signal and nine cameras to navigate (确定方向). Instead of a person arriving at their door, customers could find themselves receiving a notification (通知) on their phone that says a robot is on its way and a code to unlock the automated courier. “Put the code in, the robot opens up, and there's your food,” said David Buttress, chief manager of Just Eat.

    The robot, which has so far been tested in Greenwich, Milton Keynes and Glastonbury, costs ￡1 to transport within 3 miles, compared with the ￡3 to ￡6 it costs for a human courier. To date 30 robots have driven nearly 5,000 miles without getting into an accident or finding themselves picked on by passers-by. They have driven in more than 40 cities around the world, including London and Tallinn, Estonia.

    An initial worry was how the public would react to robots. But Martinson said the public has been calm when passing the delivery machine on the streets. “The most surprising reaction has been the lack of reaction,” said Martinson.

    Another significant fear was that people would disrupt (扰乱) the robots, or try to steal them and their contents. To prevent this, the robot is fitted with nine cameras, two way audio, and movement sensors that send a warning if it is lifted off the ground. And it opens only with a pass code provided to the customer via a notification. “It's much easier to shoplift than it is to steal a robot,” said Martinson.

    Next time you hear a funny joke you'd better not laugh too hard. According to a paper published by the British Medical Journal, laughter isn't always the best medicine. Sometimes it can even be harmful. Professor Robin Ferner from the University of Birmingham, one of the authors of the study, found that bad things could happen to people who laughed too much. He says, "We found people with heartbeat problems which had stopped their hearts, we found people who had fainted(昏倒), and we found people who'd dislocated their jaws or burst their lungs."

    It seems that laughing can be no laughing matter. But it's not all doom and gloom. Professor Ferner says there are benefits to laughing when you want to lose weight, for example. Yes, that's right: laugh and be slimmer! Professor Ferner explains that: "You use energy when you laugh, you move your diaphragm(横隔膜), you expand your lungs, and both those things can be helpful."

    According to the research, laughing for a quarter of an hour can burn 40 calories, and if you laughed all day you'd use about 2, 000 calories, which is what most people consume in a day. But don't do that or you might end up with a painful jaw. Ouch! Or you might find people looking at you in a funny way.

    But I don't want to finish this article leaving you feeling desperate. Laughter comes naturally for most of us. Babies begin to laugh at around 3-6 months. So give in to your sense of humour and keep smiling. Life is short anyway.

    Have you ever heard someone say "You totally look like you're a Jessica" or something similar? People seem to think that they know what kind of person a "Jessica" or a "Michael" looks like. Why is this?

    According to a study published in the Journal of Personality and Social Psychology, humans tend to associate people's names with their appearances, and can even guess someone's name based on how they look.

    Researchers at the Hebrew University of Jerusalem, Israel, collected thousands of photos of people's faces. They labeled (贴标签于) each photo with four names. Then, they asked volunteers to guess which of the four names was correct.

    The volunteers were able to guess the right name 38% of the time. It seems that certain characteristics of faces give them clues about someone's name, Reader's Digest reported.

    However, this only worked when the volunteers looked at names from their own culture. In addition, the volunteers were not as good at guessing the real names of people who used nicknames(昵称)more often than their real names. This may show that a person's appearance is affected by their name only if they use it often.

    "This kind of face-name matching happens because of a process of self-fulfilling prophecy (预言), as we become what other people expect us to become," Ruth Mayo from tile university told science news website EurekAlert.

    Earlier studies have shown that gender (性别) and race stereotypes (刻板印象) can affect a person's appearance. The researchers believe there are also similar stereotypes about names. For example, people tend to think that men named Bob should have rounder faces because the word itself looks round. People may think that women named Rose are beautiful. They expect them to be "delicate" and "female", just like the flower they are named for.

Dear Sir,

    There is a plan to build a new supermarket on the edge of the Whitefields housing estate(住宅区), on the land where the local library now is. I live at Whitefields, and I would like to express my concern about this plan. It is not that I am completely against the idea of building a supermarket—I just think that as a community we need to weigh up the advantages and disadvantages before committing ourselves.

    It is clear that the library is under-used and in poor condition. It is also clear that there are very few shops near here and a supermarket would be a good thing to have. But the people who want to build the supermarket seem to think that no one wants the library any more, and that it isn't a must because of the Internet and so on. Is this necessarily true, especially for elderly people? What about young people who don't have the Internet at home and need to go to the library to do their homework? Where can they study if they have to share a room with a younger brother or sister?

    On the other hand, there is an argument that a new supermarket would not only bring more choice of shopping and more convenience for local people, but it would also bring some much-needed jobs for younger people in the town—and this is a good point. What we need to do is consider the effect a supermarket will have on our quality of life. Certainly local people, including me, will find shopping a lot easier and more convenient. But there will also be extra traffic. In a few years from now, the roads in and around will be full of cars in the daytime and delivery lorries at night, and not only that—we will have got used to it, too. Are more jobs and more convenience worth such an influence on our daily lives? Perhaps, but this is what we have to ask ourselves.

    I believe that all the people of Whitefields, and the authority, need to discuss this question in an open-minded way—and I hope that by the time a decision is taken, we will have had a full and fair discussion of the issues involved, and that the local authority will have really listened to everyone's view. Is that too much to ask?

Yours faithfully,

Tom Watkins

When I was in the eighth grade, my class was assigned (指派) to be friends with the second-grade kids. I got this little girl named Shelley. The first time I saw her, she was silent and cold. She was small for her age, and she didn't play with the other kids in her class.

I tried all kinds of things to get her to talk to me. I bought her toys, crayons and candies. But try as I might, nothing worked. One time, I gave her a coloring book and said, "Shelley, now you can color at any time."

Shelley looked at the coloring book and then looked up at me, and finally looked away. By that, I didn't know how I was going to get through to the little girl, but I knew I wouldn't give up on her.

One Friday, I decided to tell her a story about my childhood. I told her that I felt lonely when I was with my classmates, and how I thought only my teachers liked me. I also told her that every day was a battle(战役) for me and that I fought back tears so people wouldn't know how much I was hurting.

She sat there just listening, trying to decide whether I was lying or not. Finally, when my story ended, there were tears in her eyes. And then she did the unthinkable, She said, "Thank you." From then on, Shelley was a different little girl. She started smiling and talking with other kids.

Looking back at this,I'm in awe(惊叹), because all I did was to help her realize that she wasn't alone. I didn't ask her to tell her story, because her story is my story,