NASA might be famous for sending rockets up to space quickly. But it will be more famous for making your next holiday come more quickly.

    The space agency is working on a new plane, which could solve the problems of supersonic(超音速的) flight and vastly increase the speed of journeys abroad. If successful, the plane would be able to fly between New York and London in just three hours. And it would reduce the time spent flying other journeys by a half, since it could be used more broadly. Until now, the problem with such planes has been the sonic boom(声爆), made famous by the original Concorde. That happens when a plane reaches supersonic speeds.

    It is a thunderous noise that upsets people on the ground— disturbing animals and even causing physical problems to materials and houses underneath. It was that effect that led Congress to ban such planes from being used over the US land, a decision that in turn was responsible for Concorde's failing to be commercially used.

    In view of the problem, the space agency has developed a new technology and tried it out in wind tunnels, and now believes that it could be put to commercial use. That plane will fly as high as 55,000 feet—far higher than normal planes—and make a sound of only 60 decibels. That's far less than 90 decibels thrown out by normal planes, and is roughly in line with a car on the motorway or a busy restaurant.

    “As long as we can get endorsement from the general public, the plane will probably be something that's acceptable,” said Peter Coen, project manager for NASA's commercial supersonic research team, in a new Bloomberg report. “If we get approved, we will have the full-sized version of the plane tried out and the plane will be put into use.”

    Awarding wining film Ballad From Tibet(《天籁梦想》) by Chinese director Zhang Wei is scheduled to premiere in New York City on Saturday, March 10.

    The film, which tells the story of four visually impaired kids from China's Tibet autonomous region embarking on a journey for their dreams, will be presented at the Bronx Library Center on Saturday, at Mid-Manhattan Library on Sunday, at Lehman College and Marlene Meyerson JCC Manhattan on Tuesday, and at the Museum of Modern Art on Wednesday.

    Based on a true story, Ballad from Tibet is about the four 1ibetan kids—Thupten, Sonam, Kelsang and Droma—achieving their dreams against all odds.

    Thupten is a 10-year-old boy partially sighted in one eye and blind in the other. His doctor says that there is a chance he could completely lose his sight, but there is an operation that could offer a 50 percent chance of saving his vision.

    His teacher firmly suggests that he should have the operation right away, but Thupten is afraid and wants to see the world before his life is plunged into total darkness.

    Along with his three friends who also suffer from blindness, Thupten embarks on an exciting adventure. Together they decide to go to Shenzhen in South China's Guangdong province, a city more than 37,000 km away from Tibetan regional capital Lhasa.

    The reason for the children's decision to go to Shenzhen is their love of music. They are all talented and want to sing their hearts out in front of national audience by participating in a Shenzhen-based reality show.

    The foursome's trip is indeed fun, but also turns out to be dangerous as well. Luckily, help is on hand along the way in the form of a wandering family, a shepherd, a motorcycle club, and a TV producer's assistant.

    Ballad From Tibet has won the award for Best Children's Feature at the 13th China International Children's Film Festival in November 2017, and earned nominations at 17 different international children's film festivals in Germany, Canada, Japan, Greece, Australia and India.

    Buttons are found on all sorts of clothing. They are usually small and round and made of metal or plastic. They fasten, or connect, one piece of clothing to another. They make sure your clothes don't fall off. When we are speaking or writing m English, buttons can be just as useful.

    Men or women often wear button-down clothes to the office. Button-down as an adjective means to be conservative（保守的）or traditional. People who are described as buttoned-down stay close as possible to the normal way of dressing and behaving. They don't wear crazy clothing or do unusual things. People and events can both be described as buttoned-down.

    If someone is buttoned-up, he or she seems very business-like. In personal relationships, a buttoned-up person is cold and standoffish, meaning they physically and emotionally keep away from others. Buttoned-up people are not warm or friendly. And they do not share their inner thoughts and feelings with others.

    In the expression “button up”, button is a verb. It means to stop talking. Now, let's say you find yourself buttonholed in a conversation at a party. The person just keeps talking and talking and talking! Finally, you can't take it any longer. You tell the person to button it! This is a direct, but unacceptable way of saying “stop talking”. Button you lip is another equally rude but effective to stop a person who talks too much.

    Another kind of difficult person is someone who pushes your buttons. To push someone's buttons means to know exactly how to get that person angry or upset. People who like to push other people s buttons usually do it for selfish reasons. First they find a person's weak point. Then they use it to upset him.

    Do you have a spare room in your house? What about a driveway for your car? Both of these can help you make money. Many people who are feeling the pinch are taking advantage of what's been called the “sharing economy”.

Perhaps the best-known example of a company in this field is Airbnb—an American web business which allows you to rent out your spare room to holidaymakers. It says it operates in 34,000 cities and it has over 1,500,000 listings.It seems to have concerned the market!

A British company is doing something with parking spaces. JustPark's founder, Anthony Eskinazi, says,“When I had the original idea, Ispotted a driveway close to a sports stadium. It would have been so convenient if I could have just parked in that driveway rather than in commercial car park.” And he has a big clientele（客户）:around 20,000 people have advertised their spaces on the site, and he says around half a million drivers use it. There are other sites doing very similar things, like Uber and Lyft—these let drivers share their cars with other passengers. Any driver knows how valuable a place to park is .A church near Kings Cross in central London has apparently made over £200,000 by renting out space in its yard to travelers!

    Because this is a new business world, those rules aren't there yet and many people are happy to share...as long as it pays!

    But the sharing economy has its critics: the competitors of these new companies. People who run things like traditional B&B, commercial car parks and taxi services are afraid of ending up out of pocket. And there is another issue: regulations on these new business are unclear. How will renting out your driveway affect your neighbor?

    It is generally acknowledged that young people from poorer socio-economic backgrounds tend to do fess well in the education system. In an attempt to help the children of poor families, a nationwide program called "Headstart" was started in the US in 1965. A lot of money was poured into it. It Look children into pre-school institutions at the age of three and was supposed to help them succeed in school. But the results have been disappointing because the program began too late. Many children who entered it at three were already behind their peers in language and intelligence and the parents were not involved in the process. At the end of each day, "Headstart" children returned to the same disadvantaged home environment.

    To improve the results, another program was started in Missouri that concentrated on parents as the child's first teachers. This program was based on research showing that working with the family is the most effective way of helping children get the best possible start in life. The four-year study included 380 families who were about to have their first child and represented different socio-economic status, age and family structure. The program involved trained educators visiting and working with the parent or parents and the child. The program also gave the parents some guidance, and useful skills on child development.

    At three, the children involved in the "Missouri" program were evaluated with the children selected from the same socio-economic backgrounds and family situations. The results were obvious. The children in the program were more advanced in language development, problem solving and other intellectual skills than their peers. They performed equally well regardless of socio-economic backgrounds or family structure. The one factor that was found to affect the child's development was the poor quality of parent-child interaction. That interaction was not necessarily bad in poorer families.

    The "Missouri" program compares quite distinctly with the "Headstart" program. Without a similar focus of parent education and on the vital importance of the first three years, some evidence indicates that it will not be enough to overcome education unfairness.

    A single dose(剂量) of an experimental vaccine(疫苗) can protect mice against the Zika(寨卡) virus, raising renewed hope of a vaccine for humans, say scientists. The US team say the results, published in Nature, are "striking" and should encourage research efforts.

    Tests in humans could begin in months. But even if these go well, a licensed vaccine for widespread use to protect those at most risk ­ such as pregnant women ­ would still be years away, experts advise. Zika has been spreading across Central and South America and, most recently, Africa. More than 60 countries and territories now have continuing transmission(传播) of the disease, which is carried by mosquitoes. The virus causes serious birth damages during pregnancy and has been declared a global public health emergency.

    Now, developing a vaccine for pregnant women to protect their unborn babies is an international research priority(优先事项). US scientists from the Walter Reed Army Institute of Research, the Beth Israel Deaconess Medical Center and Harvard Medical School tested two types of Zika vaccine in mice – one based on bits of genetic(基因的) code from the virus and another that is an inactive (and therefore harmless) copy of Zika. Both worked well, protecting every mouse that was immunised against the virus. In comparison, all of the mice not given the vaccine caught Zika after they were exposed to it.

    Researchers say they will push ahead with developing the needed virus vaccine. There are many existing vaccines for other disease that use this type of technology, while there are relatively few DNA­based vaccines. Of course, future tests will need to check the vaccine is safe and effective in humans, as well as how long the immunity might last.