A new study shows students who write notes by hand during lectures perform better on exams than those who use laptops.

    Students are increasingly using laptops for note­taking because of speed and legibility(清晰度)．But the research has found laptop users are less able to remember and apply the concepts they have been taught.

    Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes“mindlessly”by taking down word for word what the professors said.

    In the first experiment，students were given either a laptop or pen and paper.They listened to the same lectures and were told to use their usual note­taking skills.Thirty minutes after the talk，they were examined on their ability to remember facts and on how well they understood concepts.

    The researchers found that laptop users took twice as many notes as those who wrote by hand.However，the typists performed worse at remembering and applying the concepts.Both groups scored similarly when it came to memorizing facts.

    The researchers' report said，“While more notes are beneficial，if the notes are taken mindlessly，as is more likely the case on a laptop，the benefit disappears. ”

    In another experiment aimed at testing long­term memory，students took notes as before but were tested a week after the lecture.This time，the students who wrote notes by hand performed significantly better on the exam.

    These two experiments suggest that handwritten notes are not only better for immediate learning and understanding，but that they also lead to superior revision in the future.

    PhoneSoap: Charge and Clean Your Phone

    You may charge your phone every day, but do you clean your phone as much? Whatever your hands touch, your phones touch. It has been discovered that some phones have 18 times more bacteria and viruses than any surface in a public restroom. So it probably won't surprise you that a 2011 University of London study found that one in six of our phones have bacteria and viruses on them—specifically, the bacteria called E. coli.

    The research on bacteria and viruses led to the invention of PhoneSoap. It is not actually liquid like dishwasher soap. It is a phone charger that uses the electromagnetic radiation (辐射) used in hospitals to kill 99.9 percent of bacteria and viruses, cleaning your phone while it charges.

    “There are really certain types of bacteria and viruses that we should not be in touch with, and they are really on our phones,” says Wes Barnes, the PhoneSoap co-founder. It all started while his cousin and co-founder, Dan LaPorte, was in his cancer research lab at college. “He realized he got the idea of getting rid of bacteria and viruses on the phones,” said Barnes. “In the lab they used UV-C light for destroying them. He realized this would be the fastest, most powerful way to kill any bacteria and viruses living on electronic machines.”

    PhoneSoap looks like a little metal suitcase. Your phone rests in to charge and get cleaned at the same time. Instead of plugging your phone into the wall, you'd plug it into the PhoneSoap charger box. The process only takes a few minutes but, Barnes says, “The idea is that you can leave it in there overnight if you want to keep charging. Reflective paint keeps the light completely around the phone so it cleans the phone fully.”

    The co-founders spent 2013 finding the right companies and they started shipping the product in late November. By last week's International Consumer Electronics Show in Las Vegas, PhoneSoap was all grown-up. Both co-founders have left their previous jobs and are selling PhoneSoap nonstop. “We're shipping almost more than we can handle each day,” Barnes says. “It's been a great adventure.”

    The Pew report—which was based on surveys carried out in Britain, France, Germany, Italy, Spain, Greece, Poland and the Czech Republic—concluded that the European Union was “ the new sick man of Europe”.

    The percentage of Europeans with a favorable view of the EU has plunged from 60 percent last year to 45 percent now.

    The UK may be considered the most Eurosceptic（欧洲怀疑论者）country, but its support for the union has barely changed in the past 12 months, slipping only two points to 43 percent.

    By contrast, France's backing for the EU has slipped sharply, from 60 percent last year to 41 percent today.

    On the question of whether to remain in the EU, 46 percent of the British want to leave the union and surprisingly, the same percentage want to stay.

    The Pew report's authors said, “The long-drawn economic crisis has created bad forces that are pulling European public opinion apart, separating the French from the Germans and Germans from everyone else.”

    They added, “The effort over the past half century to create a more united Europe is now the main disaster of the euro crisis. The European project now stands in a bad reputation across much of Europe.”

    The only European leader rated highly by their own voters was the German Chancellor Angela Merkel, with 74 percent voters in favor of her.

    Prime Minister David Cameron was the next highest with a positive score of 37 percent among the British public, although he can take some comfort from the fact that 58 percent of Poles（波兰人）and half of all French people think he is doing a good job.

    In spite of the dark economic future and growing doubt of the EU, there were strong majorities of more than 60 percent in favor of keeping the euro in the five countries surveyed that use the single currency.

    A new study, conducted by British company Mindlab International, has found that listening to music at work increases accuracy (精确) and speed, The Telegraph reported.

    Perhaps, some parents disagree with this idea, saying, "Switch off the music and concentrate!" Well, if that's the case with your parents, you might now be able to convince them that you have science on your side.

    The company gave 26 participants（参与者）a series of different tasks for five days in a row, including spell checking, mathematical word problems, data entry, and abstract reasoning. The participants completed these tasks while listening to music or no music at all.

    The results showed that while music was playing, 88% of participants produced their most accurate test results and 81% completed their fastest work. David Lewis, chairman of Mindlab International, told The Telegraph, "Music is a very powerful management tool if you want to increase not only the efficiency of your workforce but also their emotional state... they are going to become more positive about the work."

    However, you may have a list of your favorite songs, but not all kinds of music match all homework. For maths or other subjects involving numbers or attention to detail, you should listen to classical music, the study found. In the study, pop music enabled participants to complete their tasks 58% faster than when listening to no music at all. If you are reviewing your English writing, pop music is the best choice, as it is the best kind for spell checking. It cut mistakes by 14%, compared to listening to no music. After finishing your homework, do you often take time to check your answers? Maybe, some dance music is suitable for you.

    Surgery that can improve the way a person looks is being more and more popular in the United Stated. This kind of surgery is called cosmetic surgery, and both men and women are turning to this treatment as a way of keeping their appearance young as well as keeping competitive in their jobs. Men especially are beginning to turn to face-lifts, liposuction, and implants to help them look younger. As companies downsize and move younger employees into higher positions, older employees in their late forties and early fifties feel the need to look and act younger in order to stay competitive. A younger look through cosmetic surgery may give an older employee a few more years on the job.

    These operations are not without dangers, however. One young woman had an eye operation to get rid of the bags under her eyes. She described her experience as terrible. She said, "When he started cutting, I was fully awake. Even though he'd given me an injection(注射) near my eyes, I saw everything. "She went on to explain, "I knew I had to keep still because of what he was doing. He was removing fat under my eyes. It took about ten minutes. After he finished I felt I couldn't walk. I was so weak." Her troubles did not end after the operation. For two weeks, her eyes were swollen and almost completely closed, and even dark glasses could not hide the side effects of the operation.

    Liposuction is probably the most popular cosmetic operation in the United States. It seems simple enough. First, a small cut is made over the places where the patient wants the fat removed. Next, a small pipe is put into the cut. A machine is then turned on, and the fat is taken right out of the body. However, as one doctor explained, some problems can happen after the operation. He warned, "Irregular lumps(块) and loose skin can result from this operation. If it is not completely done, liposuction can produce a very lumpy result." Patients often must have more liposuctions to correct the problem.

In life, once on a path, we tend to follow it, for better or worse. What's sad is that even if it's the latter, we often accept it anyway because we are so used to the way things are that we don't even recognize that they could be different. This is a phenomenon psychologist call functional fixedness.

This classic experiment will give you an idea of how it works and a sense of whether you may have fallen into the same trap: People are given a box of tacks (大头钉) and some matches and asked to find a way to attach a candle to a wall so that it burns properly.

Typically, the subjects try tacking the candle to the wall or lighting it to fix it with melted wax. The psychologists had, of course, arranged it so that neither of these obvious approaches would work. The tacks are too short, and the paraffin (石蜡) doesn't stick to the wall. So how can you complete the task? The successful technique is to use the tack box as a candle-holder. You empty it, tack it to the wall. and stand the candle inside it. To think of that, you have to look beyond the box's usual role as a receptacle just for tacks and re-imagine it serving an entirely new purpose. That is difficult because we all suffer to one degree or another from functional fixedness.

The inability to think in new ways affects people in every corner of society. The political theorist Hannah Arendt coined the phrase" frozen thoughts" to describe deeply held ideas that we no longer question but should. In Arendt's eyes, the self- content reliance on such accepted "truths" also made people blind to ideas that didn't fit their worldview, even when there was plenty of evidence for them.

Frozen thinking has nothing to do with intelligence. She said," It can be found in highly intelligent people."