A research project jointly carried out by scientists from several British universities and institutes has drawn people's attention to the toothbrush again.

    Researchers have found that your toothbrush is home to more than 100 million bacteria. But there are hundreds of microorganisms in the mouths and your toothbrush probably won't make you sick unless there is an unhealthy balance of bacteria. Our immune system can usually take care of bacterial invaders. However, if others use your toothbrush, or you use someone else's, bacteria can be spread.

    They have also found the toothbrush holders are the third-most dirty household items (behind dish sponges and kitchen sinks), thus advocating cleaning the toothbrush holder regularly.

    The storage of your toothbrush in your bathroom is also important. Here are some storage tips from the researchers to keep your toothbrush as healthy as possible:

    Put your toothbrush as far away as possible from the toilet flushing.

    Let your toothbrush dry thoroughly between brushings.

    Don't use toothbrush covers, which can create a perfect breeding ground for bacteria.

    Keep your toothbrush upright in a holder rather than lying down.

    Keep toothbrushes separate. If toothbrushes touch, they can exchange and spread bacteria.

    There are products available that claim to sanitize（消毒）your toothbrush. While some of these products do kill some bacteria, there is no evidence that using them will reduce your risk of illness, according to the researchers.

    They recommend replacing your toothbrush every three to four months or more often if you are sick or if you have a weakened immune system. Children's toothbrushes may need to be replaced more often than adult brushes.

    If you live in a big city, there are many thing to drive you crazy on your daily route, and it's not just overcrowded subway trains.

    Vicky Zhao is a mainlander working in Hong Kong. For her, one thing she can't put up with is people standing on the wrong side of the escalator(自动扶梯) in subway stations. "Escalators help us move faster and save time. It isn't a place to rest," the 24-year-old says. "I often see tourists block the way with their suitcases or chatting on the escalators during rush hours. It annoys me to no end."

    Admitting she is not the patient type, Zhao says things are much better in Hong Kong than in cities on the mainland where "stand right, walk left" signs are often ignored.

    The logic behind the "stand right, walk left" escalator etiquette(礼仪) seems obvious. Even though you may want to catch your breath while you're transported up or down, you should still consider others and leave enough space for people in a hurry, so that they can run and catch the train.

    Many cities' escalators, including London's and Beijing's, use the "stand right, walk left" system to speed up the flow of people. (Australia is an exception and you should stand on the left side instead.) But some cities discourage people from moving on escalators out of safety reasons. In Hong Kong's subway stations there are regular announcements asking people to "stand still" on escalators. Even so, most people in this fast-paced city observe the "stand right, walk left" etiquette.

    But the people who stand on escalators defend themselves by telling the walkers not to be so impatient. The BBC quotes one stander as saying: "If the person is in such a rush, why not just take the stairs? Even when the escalator is packed and there's nowhere to move, I see these same people complaining about not being able to pass."

    Whatever the escalator etiquette is in the place you live or visit, do what most people are doing and always be mindful of others: leave enough space between each other, don't stay at the end of the escalator, and if someone is blocking your way, a simple "excuse me" is enough.

    When many people are worried that there are no more heroes in the modern times, two university students who lost their lives to rescue drowning children have shown that heroes still exist (存在).

    According to the Inner Mongolia Morning Post. the tragedy (悲剧) occurred on the afternoon .December 14,2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water. More than 20 university students who happened to be near the Spot immediately went to the rescue of the children. Two children were quickly rescued, but the third died. The child's body was not found for three hours. Two of the rescuers, Liu Ye and had Longbiao, also died of cold and exhaustion. The body of Hao who took the lead in jumping into the lake was not found until the next day. A student who was unwilling to tell his name said he and his Classmates from the local college were taking photos at the lake. When they heard the children's criestor help, they went to the ice hole hand in hand to rescue the children. But the ice kept breaking, causing most of them to fall into the icy water.

    Local residents held mourning ceremonies (祭莫仪式) at the lake. Eight of the students were seriously affected by the freezing water and were being kept in hospital for further observation, but their lives were no longer in danger.

    In a career that lasted more than half a century, Tom Wolfe wrote fiction and nonfiction best-sellers including The Electric Kool-Aid Acid Test and The Bonfire of the Vanities. Along the way, he created a new type of journalism and coined phrases that became part of the American vocabulary.

    Wolfe began working as a newspaper reporter, first for The Washington Post, then the New York Herald Tribune. He developed a literary style in nonfiction that became known as the "New Journalism." "I've always agreed on a theoretical level that the techniques for fiction and nonfiction are interchangeable," he said. "The things that work in nonfiction would work in fiction, and vice versa."

    "When Tom Wolfe's voice broke into the world of nonfiction, it was a time when a lot of writers, and a lot of artists in general, were turning inwards," says Lev Grossman, book critic for Time magazine. "Wolfe didn't do that. Wolfe turned outwards. He was a guy who was interested in other people." Wolfe was interested in how they thought, how they did things and how the things they did affected the world around them.

    In 1979, Wolfe published The Right Stuff, an account of the military test pilots who became America's first astronauts. Four years later, the book was adapted as a feature film. "The Right Stuff was the book for me," says Grossman. "It reminded me, in case I'd forgotten, that the world is an incredible place."

    In The Right Stuff, Wolfe popularized the phrase "pushing the envelope." In a New York magazine article, Wolfe described the 1970s as "The 'Me' Decade." Grossman says these phrases became part of the American idiom because they were accurate.

    "He was an enormously forceful observer, and he was not afraid of making strong claims about what was happening in reality," Grossman says. "He did it well and people heard him. And they repeated what he said because he was right." All those words started a revolution in nonfiction that is still going on.

    The Children's Groundwater Festival, first organized by the Groundwater Foundation 19 years ago, is celebrated every year in Nebraska, a state of the central United States in the Great Plains. After organizing the festival for 16 years, the foundation passed the program on to the local community of Grand Island, Nebraska. The festival is an annual event for fourth and fifth graders of Nebraska. It is an interesting and energetic day filled with hands­on education. Water magic, folk singers and musicians, storytellers, and bird shows add to the happy atmosphere during the festival. There are also some educational activities:

    Gooey Garbage: Children build a landfill (废物填埋场) and learn how a properly­built landfill can protect groundwater.

    Water Races: Children learn about water pollution by racing a drop of water through a model.

    Well in a Cup: By building a small aquifer (蓄水层) in a cup, children learn about aquifers and drinking water wells.

    Taster's Choice: Children drink different types of water, from tap water to bottled water. Then they are taught about the treatment process of each type of water.

    There's No New Water: Students are taught to make a special glass container and learn about the water cycle.

    The Children's Groundwater Festival not only has a great influence on Nebraska's people. So far, similar festivals have been held in nearly 40 American states, Mexico City, several provinces in Canada, and New Delhi, India. People everywhere are realizing the importance of educating young people to learn and care about groundwater.

    For more information about this festival, remember to watch our program tomorrow evening. I'll be waiting for you.

    Shakespeare's Birthplace and Exhibition of Shakespeare's World

Welcome to the world-famous house where William Shakespeare was born in l564 and where he grew up .The property (房产) remained in the ownership of Shakespeare's family until 1806 .The House has welcomed visitors travelling from all over the world for over 250 years.

    Enter through the Visitors' Centre and see the highly-praised exhibition Shakespeare's World，a lively and full introduction to the life and work of Shakespeare.

    Stand in the rooms where Shakespeare grew up.

    Discover examples of furniture and needlework from

    Shakespeare's period.

    Enjoy the traditional English garden, planted with trees and flower mentioned in the poet's works.

    The Birthplace is within easy walking distance of all the car parks shown on the map; nearest is Windsor Street (3 minutes' Walk).

    The House may present difficulties but the Visitors' Centre, its exhibition, and the garden are accessible (可进入的)to wheelchair users.

    The Shakespeare Coffee House (opposite the Birthplace).