situation in which they had to observe two circles on a screen.

    At first glance,price-comparison websites are an example of capitalism at its best.But it has caused fierce competition on price and eviscerated profits.Towers Watson,a consultancy,said that "unnecessary" price competition following the rise of comparison sites in Britain had cost insurers ￡1 billion a year.

    Consumers should celebrate that;the firms' losses are their gains.But there is a catch.Comparison sites introduce a new layer of costs,including their own advertising campaigns.In theory,competition in the market for comparison sites ought to keep those costs down.But David Ronayne of Warwick University argues that consumers often lose out from comparison sites.They earn a commission for each shopper who uses them for consumption such as buying insurance.That referral（委托）cost is included in the price the consumer ends up paying.If the increased costs outweigh the saving the comparison enables,consumers end up worse off.

    These worries are not just theoretical.In 2014,Britain's competition regulator found that many comparison sites were using their contracts with retailers（零售商）to ban them from offering lower prices elsewhere.That weakened rivals' incentive（对手的动机）to cut fees,because prices on their site could not fall.By keeping prices similar,the contracts also reduced the incentive for consumers to search on multiple sites,thus helping sites retain their users.

    Weaker incentives to lower commissions mean weaker incentives to lower costs,too.That might explain why comparison websites advertise so heavily,and sometimes offer free gifts to those who use them.In a recent paper,Ben Edelman of Harvard Business School and Julian Wright of the National University of Singapore argue that when a site knows that the prices merchants provide through it will always be the lowest available,it increases investment in attracting customers,safe in the knowledge that the merchants and at last consumers will bear the cost.

    Is there any way to ensure the market for price comparison is competitive?Asking consumers to check multiple websites defeats the point of using them.One solution is to have only one site,but regulate it as a public utility（功用）. Alternatively,the governments could run the site itself.But creating good search and comparison sites may be too hard for them.It is much better to acknowledge that consumers will always have to do some comparison themselves to "keep the system honest".

    Websites that compare the comparison sites can help,although it is easy to see how they could fall prey to the same problems.Any firm with captive users（被动用户）,be it a comparison site a search engine,or a social-media platform,can charge a high price for access to the eyes of its customers.For all their innovation,Internet middlemen are not unlike supermarkets.Shoppers would never imagine that a single store had the lowest price for all the items they need.

    When I was about twelve, I headed to a restaurant for dinner with my family. It was winter, and on that night, the wind was really blowing hard.

    As my mom and I headed to the restaurant from our car, a girl about my age and her mother came up to us. They asked if we had any spare change. My mom right away asked where they lived. They pointed to an old car in a parking lot across the street. The girl said there were six of them living in that car.

    My mom said she had something to do after handing the people a few dollars. She sent me inside the restaurant with my dad and my three siblings (兄弟姐妹). But she didn't come. Later, I found out she had gone home and put all the food in our cupboards into a few bags. Then, she brought that food over to the car and handed the bags to the family. I wasn't there when that happened, but I can only imagine the joy it brought to those people.

    A few days later, when I actually found out about what she had done, I asked her why she helped those people. She told me that they were not lucky. I remember the face of that girl who had asked us for change. She was the same age as me, yet we looked so different.

    Here I stood, dressed in almost new clothes, headed to eat in a restaurant and then back home to the bedroom I shared with my younger sister. I remember thinking that the other girl didn't have any food to eat and she was heading back to a cold car shared with five other people.

    After painting this picture in my mind, I understood why my mom had done what she did. I will never forget what she did that night, and how she taught me one of the best lessons I ever learned.

    It was a comfortable sunny Sunday. I was going to meet an old university friend I hadn't seen for years, and was really excited.

    My train was running a little late, but that was no big problem - I could text him to say I would be delayed. He would understand. But… where was my mobile phone? I had that familiar sinking feeling. Yes, I'd left it at home.

    No mobile phone. I'm sure I'm not alone in feeling anxious, on edge and worried when I don't have my phone with me. In fact, I know I'm not alone: two-thirds of us experience 'nomophobia' (无手机恐惧症), the fear of being out of mobile phone contact.

    That's according to a study from 2012 which surveyed 1,000 people in the UK about their relationship with mobile phones.

    It says we check our mobile phones 34 times a day, and that 18-24 year-olds, especially girls, are the most likely to suffer fear of being without their mobiles: 77% of them say they are unable to be apart from their phones for more than a few minutes.

    Do you have nomophobia?

    You never turn your phone off

    You frequently(频繁地) check for texts, missed calls and emails

    You always take your phone to the bathroom with you

    You never let the battery run out

    It's funny to think that around 20 years ago the only people with mobile phones would be businessmen carrying their large, plastic 'bricks'. Of course, these days, mobile phones are everywhere. A UN study from this year said there would be more mobile phones than people across the world by the end of 2020.

    And when there are more phones than people in the world, maybe it's time to ask who really is in charge(主管)? Are you in control of your phone, or does your phone control you?

    So, what happened with my university friend? When I arrived a few minutes late he just laughed and said: "You haven't changed at all – still always late!" And we had a great afternoon catching up, full of jokes and stories, with no desire(欲望) to check my phone.

    Not having it with me felt strangely free. Maybe I'll leave it at home on purpose next time.

Adult Education Courses

    Professor Martin's report says that children who attend a number of schools, because their parents have to move around the country, probably make slow progress in their studies. There are also signs, says Professor Martin, that an unusually large number of such children are mentally affected.

    The professor says, "It's true, my personal feeling is that children should stay in one school. Our feelings are based on research and not on any personal feeling that I or many assistants may have on the subject."

    Captain Thomas James, an army lecturer for the past 20 years and himself a father of two, said, "I've never heard such rubbish. Taking me for example, no harm is done to the education of my children who change school regularly—if they keep to the same system, as in our Army school. In my experience—and I've known quite a few of them—Army children are as well-adjusted (适应) as any others, if not better. What the professor doesn't appear to appreciate is the fact that in such situations children will adapt (适应) much better than grown-ups."

    When this was put to Professor Martin, he said that at no time has his team suggested that all such children were backward or mentally affected in some way, but simply that in their experience there was a clear tendency (倾向).

    "Our findings show that while the very bright child can deal with regular changes without harming his or her general progress in studies, the majority (大多数) of children suffer from constantly (不断地) having to enter a new learning situation."

    Antarctica has become one of the world's most popular tourist destinations. Since 1969, the average number of visitors to the continent has increased from several hundred to over 34,000 today. All activities in Antarctica are heavily supervised by the Antarctic treaty for environmental protection purposes and the industry is largely managed by the International Association of Antarctica Tour Operators (IAATO).

    The first expedition (探险) to Antarctica with travelers was in 1966, led by Swedish explorer Lars Eric Lindblad. He wanted to give tourists first-hand experience of the ecological sensitivity of the Antarctic environment, in order to educate them and promote a greater understanding of the continent's role in the world. In 1969, Lindblad built the world's first expedition ship, the MS Lindblad Explorer, which was specifically designed to transport tourists to Antarctica.

    In 1977, both Australia and New Zealand started to offer scenic flights to Antarctica through Qantas and Air New Zealand. The flights often flew to the continent without landing and returned to the departure airport. The experience was an average 12 to 14 hours with up to 4 hours of flying directly over the continent. The flights from Australia and New Zealand stopped in 1980. It was largely due to the Air New Zealand Flight 901 accident on November 28, 1979. In 1994, flights to Antarctica continued again.

    Despite the potential dangers and risks, trips to Antarctica continued to grow. According to IAATO, 34,354 travelers visited the continent between 2012 and 2013. Americans contributed to the largest share with 10,677 visitors, or 31.1%, followed by Germans 11.1%, Australians 10.7%, and the British 10.2%. The rest of the visitors were from China, Canada, Switzerland, France and elsewhere.

    The cost of a trip to Antarctica can range from as little as $3,000-$4,000 to over $40,000, depending on the scope of transportation, housing, and activity needs. The higher end packages typically involve air transport, on-site camping, and a visit to the South Pole.