A telescope, called Gaia, is being designed by astronomers in Europe, and it couldn't be more different from Pan-STARRS, which is another telescope being designed. While Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be looking at our entire galaxy (银河系).

    Gaia is designed to draw a map of the Milky Way, our home galaxy. Just as a map of your town gives you a picture of where things are located, Gaia's map of the galaxy will tell astronomers where the stars are. Over five years, Gaia will observe (观察) about a billion stars and other objects in our galaxy. Each object will be observed about 70 times.

    Gaia will be sent into space connected to a rocket. It contains two telescopes, each focused at a different angle (角度). These two telescopes act like Gaia's “eyes”. The reason why humans can see things in 3D is that we have two eyes focused on the same object, at slightly different angles. By using two telescopes like eyes, Gaia can produce the first 3D map of the positions of the stars it views.

    Gaia, which is to be sent into space, will be a powerful telescope. If you were to use it on Earth, for example, you could stand 600 miles away from your best friends and still get a clear picture of their hair.

    Gaia is one of more than a dozen telescopes being designed by scientists right now. The next generation of telescopes will reveal new parts of our universe that will seem surprising. The universe, with all its planets, stars and other strange objects, is a puzzle with pieces that we can see by using powerful telescopes.

    I grew up with a fat dad 450 pounds at his heaviest. Every week he would try a new diet, and my family ended up eating whatever strange food he was trying at that moment.

    After my third-grade year, my dad landed a life-changing job in Manhattan. My mom, my little sister and I had to move away from our hometown, Chicago, and leave my grandmother and her beautiful food behind.

    Leaving my grandmother was far more frightening than the move to New York City.  There would be no more special weekends at my grandmother's house, the only place I can remember feeling happy, safe and nourished (有营养的). It was what I desired. In this new city, I felt extremely alone and lost, and I missed my grandmother terribly.

    My grandmother knew just how I felt. And she knew the cure. Every week, she would send me a card with a$ 20 bill, a recipe and a list of what to buy at the market. It kept us bonded, and her recipes filled my body and soul.

    Over the years, I have grown to better understand my father's struggles with weight and the toll (代价) it took on him and those who love him. I have come to realize he was driven not by vanity (自负) or selfishness as much as by a deep pain, I  And in spite of growing up in such an unhealthy eating environment ( or perhaps be-cause of it), as an adult I found a passion and a career as a nutrition consultant.

    Today, my father weighs 220 pounds and is a vegan(素食者). How he got there is a story I hope to share in the coming weeks. More importantly, food is no longer a barrier that keeps us apart, but a bridge that keeps us connected. There is nothing my dad enjoys more than talking with me about dietary theories and his weightloss victories. And now I am the one regularly sending recipe cards to my father s house, just as my grandmother did for me.

    London—A morning's train ride away, across the Channel, English kids talk about Liverpool's soccer team in a Paris pub. Some Parisians have even started to go to work in London. In the 19^th century, Charles Dickens compared the two great rival (竞争) cities, London and Paris, in " A Tale of Two Cities". These days, it might be A Tale of One City.

    Parisians are these days likely to smile in sympathy at a visitor's broken French and respond in polite English. As jobs grew lack at home over recent years, perhaps 250,000 Frenchmen moved across the Channel. With an undersea tunnel, they could travel between cities in three hours. The European Union freed them from immigration and customs.

    Paris, rich in beauty, is more attractive. But London feels more full of life, and more fun until the pubs shut down.

    "For me, the difference is that London is real, alive," said Trevor Wheeler, a banker.

    Chantal Jaouen, a professional designer, agrees. "I am French, but I'll stay in London," she said.

    There is, of course, the other view. Julie Lenoux is a student who moved to London two years ago. "I think people laugh more in Paris," she said.

    In fact, London and Paris, with their obvious new similarities, are beyond the old descriptions. As the European Union gradually loosened controls, Londoners flocked into Paris to shop, eat and buy property (地产).

    "Both cities have changed beyond recognition." Said Larry Collins, a writer and sometimes a Londoner. Like most people who know both well, he finds the two now fit together comfortably.

    "I first fell in love with Paris in the 1950s and it is still a wonderful place," Collins said. "But if I had to choose, it would be London. Things are so much more ordered, and life is better."

    But certainly not cheaper. In fancy parts of London, rents can be twice those on Avenue Foch in Paris. Deciding between London and Paris requires a lifestyle choice.

    Like Daphne Benoit, a French journalism student with perfect English, many young people are happy to be close enough so they don't have to choose.

    "I love Paris, my little neighborhood, the way I can walk around a centre, but life is so structured," she said. "In London, you can be who you want. No one cares."

    Children who do better than their companions at school tend to go on to enjoy better health as adults, research suggests. The study was based on a 30-year follow-up of more than 14.000 children born in Sweden in 1953.

    The Journal of Epidemiology and Community Health study found the least popular children had a nine times higher risk of heart disease. They were also more at risk of diabetes (糖尿病),drugs, alcohol and mental health problems.

    The degree of popularity, power and status enjoyed by each child, was evaluated when the children reached sixth grade in 1966 by asking them who they most preferred to work with at school. Individual children were classified into five status bands depending on how many nominations (提名) they have received.

    The leader researcher Ylva Almquist, from the Center for Health Equity Studies at the University of Stockholm, said children with a low status might lack social support and information, this will lead to a more negative self-image, which could lead to lower expectations and poor choices in life.

    "For example, children in lower peer status may adopt a more health-damaging lifestyle, including behaviors such as heavy smoking and drinking. These behaviors are known to be major risk for heart disease." she said.

    She said the study shows that schools should work to promote social equality in the classroom, and to improve children's self-image.

    Professor Alan Maryon-Davis, president of the UK Faculty of Public Health, said, "Children who feel undervalued or are bullied (欺凌) at school often grow up lacking self-confidence. They then seek comfort in overeating, smoking or drinking, and all too often find themselves in poor health. It is important to do whatever we can to help children and young people feel valued."

    Robots and humans will soon be living in harmony(和睦).A singing robot is being taught to create jazz with a human in a project.

    Antonio Chella from Italy is working with a Telenoid robot. To start with, the Telenoid will be trained to follow the movements and simple sounds made by a human singer, and to connect music with different emotional states. Chella then plans to see if the robot can use these connections to create music.

    Intelligence is often regarded as the ability to find connections between the existing things. But Chella suggests that a conscious(有意识的) creature should be able to go a step further and introduce new connections that result in the creation of something new.

    Some jazz musicians say that they should have a mental library of musical phrases so that they are able to combine them in new ways. More importantly, however, this combination happens in a state that is similar in a sense to dreaming. Chella wants to copy these states in a machine.

    “This work raises interesting questions about the link between consciousness and music making,” says Philippe Pasquier, a musician and computer scientist. But he is skeptical about whether a robot musician needs a physical body.

    Pasquier argues that the robots are faced with two challenges(挑战). Software that can copy Bach has already been developed. But interpretation（演绎）includes human's different tastes and judgments. “What made the Beatles famous was not so much their works, but the fact that the interpretations of the works were wonderful,” he says.

    It is not yet clear how a robot would go about interpreting music in a new way. But by copying humans and then learning to sing, Chella's robot could provide clues.

    What seems to be important is that human composers often listen to lots of music made by others. So Chella's robot had better listen to those jazz standards first.

    I became a magician by accident. When I was nine years old, I learned how to make a coin disappear. I'd read The Lord of the Rings and gone into the adult section of the library to be buried in fantasy literature but young enough to still hold out hope that you might find a book of real, actual magic in the library. The book I found taught basic techniques, and I tried to practice.

    At first the magic wasn't any good. It was just a trick—a bad trick. I spent hours each day running through the secret moves in front of the mirror. I dropped the coin over and over, a thousand times in a day, and after two weeks my mom got a carpet and placed it under the mirror to muffle (消音) the sound of the coin falling again and again.

    One day I made the coin disappear on the playground. We had been playing football and were standing in the field behind the school. A dozen people were watching. I showed the coin to everyone. Then it disappeared. The kids screamed. Everyone went crazy.

    A few years later, I staged an underwater escape in the river that flowed through the middle of the campus of the University of Iowa, where I went to school. I stood on a boat in the middle of the river wearing nothing but biking shorts. The sky was dead and gray, and the water was cold at the surface, and colder in the depths below.

    Technically, I succeeded. I jumped into the water, sank to the bottom, and escaped from the locks and the chains before swimming to the surface. But it didn't feel like a success.