Tornadoes are nature's most violent storms, which can cause deaths and destroy a neighborhood in seconds. A tornado appears as a funnel-shaped (漏斗状) cloud from a thunderstorm to the ground with whirling (飞快移动) winds that can reach 300 miles per hour. Damage paths can be over one mile wide and 50 miles long. Every state is at some risk from this disaster.

    Some tornadoes can be seen clearly, while rain or nearby low-hanging clouds obscure others. At many times, tornadoes develop so rapidly that little, if any, advance warning is possible.

    Before a tornado hits, the air may become very still. A cloud of debris (散片) can mark the location of a tornado even if a funnel can not be seen. Tornadoes generally occur near the edge of a thunderstorm, when the strong wind may die down. It is not uncommon to see clear, sunlit skies behind a tornado.

The following are facts about tornadoes:

    The average forward speed of a tornado is 30 MPH, but may also vary from still to 70 MPH. Debris is picked up or a cloud forms in the funnel.

    The average tornado moves from southwest to northeast, but tornadoes have been known to move in any direction. Tornadoes are most often reported east of the Rocky Mountains during spring and summer months.

    Tornadoes can happen together with tropical storms and hurricanes as they move onto land. Waterspouts are tornadoes that form over water.

    The tornado season in the southern states of America is March through May; in the northern states, it is late spring through early summer. Tornadoes are most likely to occur between 3 p.m. and 9 p.m., but can occur at any time.

    It is made from grapes grown without pesticides (杀虫剂) and chemicals, is kind to the environment and rarely causes hangovers (宿醉). Sales of organic(有机的) wine are booming in the UK.

    According to the organic food and farming group Soil Association, sales of organic beers, wines and spirits rose by 14.3% last year to reach nearly ￡6 million, driven by the demand from consumers who are increasingly seeking “natural” food.

    “It seems that people are rediscovering their link with the environment through organic food. Organic wines also taste better, perhaps due to less use of man-made chemicals.” said Finn Cottle of Soil Association. As well as the benefits of producing grapes without using pesticides, organic wine also contains less sulphur dioxide (二氧化硫), which can contribute towards hangovers.

    Supermarkets are increasing supplies on their shelves to meet consumer demand, while the switch to online shopping has also helped, as people are more easily able to find what they are looking for. Vintage Roots is now one of the UK's biggest online shops of organic wine, while Ocado provides more than 100 different organic wines and Daylesford, best-known for its organic vegetable boxes, has branched out into organic wine and spirits.

    The discount supermarket Aldi is set to start its first collection of so-called “green” wines this week, offering eight wines with organic certificates. Aldi expects the wines to appeal to the young shoppers who are increasingly concerned about the environmental influence of the produce that they are buying and consuming.

    English organic wine producer Oxney Estate's Noir Rosé recently won the Waitrose prize for the most outstanding rosé wine at the competition. A spokeswoman for Waitrose said:“Organic wine is a growing trend globally and we have seen sales increase by 16% in the last year”.

    The idea of progress started to flower in the 17th century. At that time, many wise thinkers believed that man liberated（解放） by reason would rise to greater heights of achievement. The many expressions of human nature would be the engines of progress: language, business, science, and moral sensibility （道德感）. Unfortunately, most of those engines have failed to bring the desired human progress.

    The modern age has belonged to material progress and its main source has been science. Science gives people huge power to change the world. But can people be trusted to use it always for good? Think of biotechnology and information technology. And it is not just that scientific progress does not deliver the emotional good. People also fear that mankind is failing to manage science properly. The forests are disappearing; the ice is melting; privacy is leaking; life is becoming a depressing march in an ugly world.

    The point is not that science is harmful, but that scientific progress needs to be mapped tidily onto human progress. That relies on moral sensibility in its widest sense. This liberal force offers hope for a better future. The very idea of moral sensibility probably sounds out-of-date. Bur researchers find that people desire a sense of moral purpose which would give life dignity （尊严）. People want to determine how the world works, not always to be determined by it. Moral sensibility is why people will suffer from their beliefs, and why acts of noble self﹣sacrifice are so powerful.

    It is admitted that our moral ideals will never be realized completely. But sometimes, however imperfectly, we can make progress. Human dignity requires the love of ideals for their own sake, but nothing requires that the love be returned.

Human progress is neither guaranteed nor hopeless. Instead, it is up to us.

    I can proudly say that last year I broke the record for the oldest person in the world to ride a roller-coaster. I'm 105, but I feel younger. Even the doctor agrees I'm in good condition. I'm a bit deaf and my legs feel weak, but they are the only issue.

    I rode the Twistosaurus at Flamingo Land, which spins you round quite fast. I didn't choose to go on that. I'd have preferred a really fast one that went upside down. But I was told I couldn't ride something like that, because my blood pressure could drop and I might have some danger.

    I wasn't nervous — I don't get frightened of anything. I was securely fastened, so I knew I wouldn't fall out. The roller-coaster ride went on for three or four minutes, and it couldn't be a better experience. And I raised a lot of money for the Derbyshire, Leicestershire & Rutland Air Ambulance fund, which was fantastic.

    People were saying I'd got a place in the Guinness World Records. Later, someone came to present me with the certificate. I had it on the wall in my living room, with another one that got a year earlier.

    My record-breaking ways really began a couple of years ago, with the ice-bucket challenge. It turned out that I was probably the oldest person in the world to do it, and the video was very popular. After that, I started to think about what else I could do to raise money for different charities.

    I'm not sure if anyone admires all the fun I'm having. They just say I'm daft and that's about it. But I've had many good days and many exciting times. I've had a really good life. I don't think I've wasted any of it.

    Compulsive（强迫的）shoppers may have a new psychological excuse to blame for their wild shopping. Psychologists at the University of Canterbury in New Zealand are studying the "shop-till-you-drop" habit as a behavioral disorder similar to compulsive eating. Compulsive shoppers frequently buy more than they can afford or more than they need, and it causes them distress.

    "It becomes a problem when you are out of control," psychology lecturer Neville Blampied said. "When you are feeling bad and blue, what do you do? Some people eat chocolate cake and ice cream. Some people take the credit card and go out to the shop." Bank managers understand the problem because they have to deal with people who have to be persuaded to stop using their cards drawing money.

    Compulsive shopping was first discovered in 1915, although it was then known as oniomania. Few studies have been done on the problem.

    An advertisement in a Christchurch paper, calling for people to take part in an experimental treatment program designed by Mr Wilson, attracted 10 replies. But the problem, said Mr Wilson, is"clearly not rare". He thinks that compulsive shopping should be treated with drugs." As psychologists we are interested in non-drug treatments for behavioral difficulties," Mr Wilson said.

    Compulsive eaters or shoppers get a kick from their habit. "Both activities provide an immediate kind of kick and you feel a bit better," he said. "You have long-term problems, but human beings are extremely good at not seeing long-term problems and are very sensitive to short-term benefits," he said.

    The aim of the treatment was to help people find better ways of managing their emotions. The program, consisting of 10 one-hour weekly lessons and two follow-up treatments, is loosely based on teaching stress management.

    "You often have to start to get people to correctly recognize their emotions. Not being able to know what you really feel weakens your ability to solve the problems connected with what's making you feel that way," Mr Wilson said.