Nowadays more and more people are talking about geneticallymodified foods ( GM foods). GM foods develop from genetically modifiedorganisms (有机体), which havehad specific changes introduced into their DNA by genetic engineeringtechniques. These techniques are much more precise where an organism is exposedto chemicals to create a non­specific but stable change. For many people, thehigh­tech production raises all kinds of environmental, ethical, health andsafety problems. Particularly in countries with long farming traditions, theidea seems against nature.

In fact, GM foods are already very much a part of our lives.They were first put on the market in 1996. A third of the corn and more thanhalf the cotton grown in the U. S. last year was the product of biotechnology,according to the Department of Agriculture. More than 65 million acres ofgenetically modified crops will be planted in the US this year. The geneticgenie is out of the bottle.

However, like any new product entering the food chain, GM foodsmust be subjected to careful testing. In wealthy countries, the debate aboutbiotech is not so fierce by the fact that they have a large number of foods tochoose from, and a supply that goes beyond the needs. In developing countriesdesperate to feed fast­growing and underfed populations, the matter is simplerand much more urgent: do the benefits of biotech outweigh the risks?

The statistics on population growth and hunger are disturbing.Last year the world's population reached 6 billion. The UN states that nearly800 million people around the world are unhealthy. About 400 million women ofchildbearing age don' t have enough iron, which means their babies are exposedto various birth defeats.As many as 100 million children suffer from vitamin Adeficiency, a leading cause of blindness.

How can biotech help? Genetic engineering is widely used toproduce plants and animals with better nutritional values. Biotechnologistshave developed genetically modified rice and they are working on other kinds ofnutritionally improved crops. Biotech can also improve farming productivity inplaces where food shortages are caused by crop damage attributable to drought,poor soil and crop viruses.

    Tonight, my piano concert was the most important thing in my family. My grandparents were coming by plane to hear me play. Even my busy Aunt Dianne who is on TV every night reading the news, was coming.

    But one thing was for sure. I would never win an award for my piano playing. And that's just because the more I practiced ,the more nervous I got. So there I was, on stage, in my beautiful dress, and I sat down at the piano. But when I started to play, I hit a wrong note. I told myself to start over. But then I hit the wrong note again. It was as if I hadn't practiced at all.

    Finally the disaster was over. I ran off the stage. I couldn't understand why people were applauding. But they were. My mom and my dad had flowers for me, and we were all supposed to go out for a nice dinner, but I couldn't. I just wanted to go home and cry and never go anywhere again. After we went back home, Aunt Dianne just came in and sat down on the side of my bed.

    "It was my first night on the air," she said."I had never been on television before, and I made a mistake. I mispronounced my name and the name of the news show. And you know what? No one even noticed but me. Just like tonight, no one noticed—just you". Aunt Dianne was right. I think we are harder on ourselves than anyone else is. Maybe I will leave my room. And maybe, I'll play the piano again.

    Winter is for working hard, summer is for playing hard. From the Bahamas to Amsterdam, we have several most appealing summer vacation spots for you to choose from.

    The Bahamas

    While there is a risk of getting rained on during hurricane season, June generally sees mild weather, fewer crowds and significantly lower prices. While some resorts (度假胜地) in the Out Islands may close, New Providence and Paradise Island remain open year-round. It's a good choice for families looking for a taste of relaxing island living.

    Mackinac Island, MI

    Mackinac Island, 20 minutes by boat from either the Upper or Lower Peninsula of Michigan, comes alive on summer weekends. Most of its roughly 4 square miles is parkland, suitable for hiking and cycling. Be sure to take in the beautiful architecture―Victorian cottages that date back to just after the Civil War. You can have a taste of times gone by; cars were banned more than a hundred years ago, and horse-drawn carriages are still used to get around today.

    Ocean City, MD

    This East Coast beach town is best known for its boardwalk, which is known for old-school amusement rides. Cycling in the town is also a great pleasure. Grab your wallets and feast on hard-shelled crabs at Hooper's crab house or drink in the sunset with a local beer in hand from Fager's Island Restaurant & Bar's large bayfront decks. Parking is free with your consuming receipt. You can't miss a classic walk along the boardwalk and the taste of Thrasher's vinegar and Old Bay French fries.

    Amsterdam

    Summer is the ideal time to visit this city. The gray skies have lifted, festivals abound and events to enjoy include the Open Garden Days, when visitors can peek (窥视) into the private gardens behind the beautiful Houses that line the famous canals. You can experience urban adventure, crossing Amsterdam's thousands of bridges and waterways by bike and by boat in search of the perfect brown cafe.

    Webber is a labor economist. His latest research offers guidance on how to keep students on target to earn a degree from a college or university. Among his findings: It is important, whenever possible, for college students to complete their degree program in four years. Also, getting a part-time job is probably a good thing to help finance a college education. But too much time spent working on a job makes it less likely the student will graduate.

    One thing, Webber said, is financial aid that helps many students pay for college. Scholarships and other assistance generally stop after four years. So the cost of each additional year in school is likely to come almost entirely from the student and/or parents.

    But there are other reasons why taking more than four years is a problem, as Webber notes. It's because life gets in the way, other things happen. He means the longer you stay in college, the more likely that some unexpected event will affect your studies. It could be a loved one getting sick, a parent losing a job, or the student running out of money for college.

    Only about four in 10 graduated within four years. It is also important that students have enough time to complete their college classes, Webber added. His research suggests part-time work of 15 hours or less will not cause harm to the student's scholastic performance. But his research shows students who work 20 hours or more a week are about 15 percent less likely to graduate on time, or to graduate at all.

    His belief is that students active in college athletic programs would face the same problem. It is common, he said, for student athletes to spend 20 hours or more for training, travel and to compete against athletes or teams from other schools.

    For centuries, mankind and dogs have suffered from a communication failure. We can tell dogs what we want them to do and sometimes they comply, but we've always struggled when it comes to understanding the true meaning of their barks and whimpers. There is exciting news now – a dog translator has been invented to help you communicate with your furry friend.

    Researchers at North Carolina State University have fashioned some kind of miracle dog translator body harness(束腰带). What's special about it is that it doesn't just rely on the dog's vocalizations to interpret what Fido is banging on about.

    Oh no – this miracle harness reads and interprets the ordinary dogs' body language as well, giving us a full two-way dog communication experience.

    Researcher David Roberts says: "Dogs communicate primarily through body language, and one of our challenges was to develop sensors that tell us about their behavior by observing their posture remotely."

    Sensors on the harness monitor the dog's heart rate and body temperature and software builds up a vocabulary, letting the human know what the dog is feeling.

    What would dogs say if they could talk to us? The human can even communicate back through the harness thanks to vibration motors, supposedly by tapping into the dog's senses so that it can understand what you're trying to say to it.

    The dog harness is designed for dogs involved in search and rescue and other front-line work, but it's got us dreaming of a beautiful future, one where humans and dogs can co-exist as equals, with the dog able to fully express itself at all times.

    The McDonnells lived in a small brick house in Larchmont, a suburb of New York City. Jim was foreman of mail carriers at the post office where he had worked for 25 years. Married in 1960, he and Anne were childless.

    On the evening of the eleventh anniversary of their marriage, carrying out the garbage, Jim McDonnell slipped on ice­coated steps, and struck his head. A few days later, driving to work, he lost control of the car, hit a telephone pole, and banged his forehead against the windshield. The following day he fell off the stairs, and again he banged his head. Found unconscious, he was hospitalized for three days with a cerebral concussion(脑震荡). One day in the same month, Jim borrowed a friend's station wagon and drove to Kennedy Airport to pick up Anne's brother and family. When he returned the borrowed car at 10 p.m., he was unaware that the wallet containing his identification had slipped out of his pocket onto the floor of the station wagon. After that, he was never seen again.

    So what really happened to Anne's husband? During his walk home, Jim had indeed blacked out(昏厥), losing all ability to remember who he was and where he lived. What happened then is unclear. The next thing he knew was that he was in downtown Philadelphia, a city he had never visited before. Seeing signs advertising the services of a James Peters, a real estate broker, Jim adopted James Peters as his own name. He had no past; his only reality was the present. James Peters got a Social Security card, which could be obtained at that time without showing a birth certificate, and took a job in a health club. He next worked at a cancer research institute, cleaning out animal cages. He also got a night shift job at the P&P luncheonette, where he became well known for his omelets, as well as his courtesy and good humor.

    About a month before Christmas 1985, colleagues noticed that Jim had grown unusually quiet and depressed. Something seemed to be turning in his mind. On December 22, Jim had fallen and banged his head. The next day at work he seemed distracted, and late that afternoon he had fallen again, striking his head. On December 24, he awoke feeling confused, yet delighted. After almost 15 years, he knew who he was! He was James A. McDonnell, Jr., of Larchmont, New York. His wife's name was Anne.

    Anne had just returned home from Christmas Mass, where she lit candles and prayed for Jim. A light snow was falling, and she was in a hurry to leave for Christmas dinner at her sister's before the roads grew slick. Then the doorbell rang. "Oh my," she thought, "this is not a good time for a visitor." Anne opened the door — and saw a man with a full white beard. Immediately she recognized Jim. She couldn't speak.

    To Jim, Anne looked a little older, but prettier too. His heart overflowed.

    "Hello, Anne," he said.