A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

    “It's extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components.“The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.

    They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it's connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

    While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers' fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.

    Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

    A family story is like a puzzle. Each family member leaves some clues. Family members come together because they have a common tie with one another, sharing a name and special traditions. Exploring family roots and sharing past memories ensure each tradition lives on.

    Ancestory.com has created customized (订做的) “Our Name is History” books to give your family a look into your history by learning about your last name. By visiting it, you can check if information is available for your last name. Ancestory.com researchers have collected more than 5 billion names from records such as passenger lists, immigration records and from birth, marriage and death records. The collected information is then used for each customized book.

    “Our Name is History” books are available for nearly 200,000 last names, accounting form 85 percent of all the US homes. The collected information is a great start of learning about your family roots. This book will not only surprise your mother, but also become a precious memory to pass down through the generations. It can also be an inspiration for her to talk about all the special women in her life. So instead of just giving her flowers or jewelry, give her a special family name book and share your favorite memories with her.

    After learning the general history of your last name, your might be inspired to continue your exploration. The “Our Name is History” books include a special software product for building, searching and sharing your family history.

    To learn more about “Our Name is History” books, visit www. Ournameinhistory.com. The deadline to order in time for Mother's Day is April 30.

                                                                       Balloon Volleyball

    It's a rainy, dark day and there's nothing to do. You don't feel like sitting quietly but you are not allowed to make a lot of noise. What can you do for fun? Try balloon volleyball.

    Items needed for this game: a balloon (or two, in case the first one bursts), some ropes, two chairs, at least two people and a room.

    Set up the room. If you're in the living room, or a family room, be sure to move all the furniture out of the way. Get two chairs and set them in the middle, outer edges(边缘)of the room. They should be at the same place where you put a volleyball net. Turn them so that the seat is facing the wall, not the “playing” space. Tie the rope onto the top of the chair, and run the rest of the rope to the other chair. Now tie it on this chair at the same place as the first chair. You can decide the “out-of-bounds”(出界) lines, if you want to have them, but they really are not necessary in this game.

    Blow up the balloon. Choose sides. You will play this game on your knees (at least until they start hurting and you want to stand). Each side must get the balloon over the rope in three hits. If it does not get over, the other side gets the balloon and a point. This game becomes more difficult because you must play without talking.

    You can also add other rules to make it more difficult; for example, you can only use your left hand or only your right hand to hit the balloon.

    Continue playing until one side gets 10 points. You can make your game longer or shorter by changing the number of points it takes to win.

    This is a fun way to get your energy out, have fun, and not make too much noise on a rainy, stay-in-the-house day.

    The Danish lifestyle concept of hygge means many indescribable feeling of comfortable things to many people. Now, join us in visiting some of the best hygge places.

    ⒈Manhausen (Manshausen, Norway)

    Adventure-seeking people needn't look further than Manhausen, a 55-acre island escape in Norway's Groteya strait. Not to be missed the saltwater hot tub overlooking the sea and family-style meals enjoyed fireside at the main house. The baby sitting service also available.

    Get more information here.

    ⒉Cedar Lakes Estate (Port Jervis, New York)

    Occupying 500 bucolic acres, this turnof-the-century summer camp now houses a host of luxury, lodge-style cabins. Bike the grounds, paddle the lakes, swim in the outdoor heated pool or head to a nearby mountain for a day of skiing. Then lie down with a great book beneath a fur blanket, turn on your fireplace and get your snuggle on.

    Get more information here.

    ⒊Soho Farmhouse (Oxfordshire, England)

    This Oxfordshire countryside members-only club offers up a British version of hygge. Among the splendid property's coziest offerings: the community farmyard and the Studie Cabin guest room, which boasts views of the lake.

    ⒋Salt House Inn (Provincetown, Massachusetts)

    This charming coastal town now boasts a 19th-century-shingled cottage turned hotel. Book your visit during the quiet, windswept off-season (January through March) for some salty fresh air on the beach.

    Get more information here.

    A 27-year-old inventor, Joco Paulo Lammoglia, has come up with a new device ( 设 备 ) named the AIRE mask, which is capable of transforming the wind energy provided by the wearer's breath into electrical energy. This means breathing has become a source of renewable energy. The inspiration for the invention came from his watching children blowing on pinwheels (纸风车).

    The device is worn like a mask equipped with tiny wind turbines (涡轮) and it can work its magic even while people are sleeping, running or hanging around, since energy is created from one's breath. The principle of this AIRE mask is simple. The invention uses the wind flow created by breathing and changes it into energy that can charge mobile phones and iPods. Simply put this mask connected to your mobile phone on your face. The rest takes place naturally through your breath that provides power to run turbines which produce electricity.

    Lammoglia explained how useful he hopes the AIRE will become. He said, "I hope to bring the concept into production and reduce the carbon footprint. It can be used indoors or outdoors, while you're sleeping, walking, running or even reading books." Apart from saving energy and contributing to environmental protection, it also encourages the practice of physical exercise. This is an entirely all time renewable energy source. Its energy is available 24 hours a day, seven days a week.

    Lammoglia explained why he thought the AIRE was so useful, saying, "Though many of our modern devices offer benefits, they tend to consume a high amount of electrical energy. This may cause problems for the environment, especially if the energy used by these devices is produced by non-renewable sources.

    The AIRE mask will be future's cheaper source of charging mobile phones. It would save energy and allow people to never have to worry about their phone dying unless they stop breathing.