“Beating is a sign of affection, cursing (骂)is a sign of love.” Many may not expect to hear the words of the old Chinese saying in these modern times—with parents wealthier and better educated than they have ever been—but experts say they still ring true.

    Today, it seems, Chinese parents are more likely to send their children to pre­college military academies in the United States in the hope that some tough love will pave the way to success.

    “Good education doesn't mean letting your children enjoy privileges, especially our boys.” said Song Wenming, an entrepreneur (企业家)in Jinhua' East China's Zhejiang province. “They should be raised in tough conditions to know what to fight for in the future.”

    In August, Song sent his 17­year­old son to Valley Forge Military Academy (VFMA) in Pennsylvania. And he is far from alone, even though it takes a lot of money—around $48,000 per year—to send a child to a strict military school.

    Statistics show that an increasing number of Chinese students have been registering with such academies .

    A few years ago, there were no Chinese students at Valley Forge. Today, there are 28.“All of the Chinese students at Valley Forge came from wealthy families; some of them were spoiled.” said Jennifer Myers, director of marketing and communications at the school.

    Song's only son, Song Siyu, had a rocky start during his first six weeks at the school. The teenager said he went to the school voluntarily but did not expect it to be as difficult.

    Now, three months later, he has perfected the art of taking a bath in 35 seconds, finishing a meal without looking at his food, and making his bed with precision. He can even take criticism, no matter how unreasonable.

    “The training is hard but I know it is good for self­development of individuals.” said Song Siyu. “The endless training and scolding are just ways to build up our character; they are not personal .”But his enthusiasm is not universal. Ten of the 13 Chinese students who joined the academy this year have transferred to other schools. But for those who stick with it, there is a reward for all the hard work.

    There are two great trends on parents bringing up children today．First，children are now praised to an unbelievable degree．As Dorothy Parker once joked，American children aren't raised；they are motivated．Children are constantly told how special they are．The second is that children are honed(磨砺) to an unimaginable degree．Parents spend much more time than in past generations on their children's development．

    These two great trends—greater praise and greater honing—combine in close ways. Parents shower their kids with affection，but it is intermingled with the desire to help their children achieve success．Parents are happy when their child studies hard，practices hard，wins first place，gets into a famous college．

The wolf of conditional love is hidden in these homes．The parents feel they love their children in all circumstances．But the children often think differently．They feel that childhood is a performance—on the athletic field，in school and beyond．The shadowy presence of conditional love produces a fear，the fear that there is no completely safe love．

    Meanwhile，children who are uncertain of their parents' love develop a great hunger for it. This conditional love is1ike an acid that affects children's criteria to make their own decisions about their own colleges，majors and careers．At key decision-points，they unconsciously imagine how their parents will react．

    These children tell their parents those things that will bring praise and hide the parts of their lives that won't. Studies suggest that children who receive conditional love often do better in the short run．They can be model students．But they suffer in the long run. They come to hate their parents．They are so influenced by fear that they become afraid of risk．

    Parents today are less likely to demand obedience(顺从) with explicit rules and lectures．But they are more likely to use love as a tool to exercise control. But parental love is supposed to ignore achievement. It's meant to be an unconditional support -a gift that can not be bought and cannot be earned．

    Are you sick of going to bed late and waking up tired? Then grab your hiking boots and a tent. A new study suggests that camping in the great outdoors for a couple of days can reset your body clock and help you get more sleep.

    The body clock is an internal system that tells our bodies when it's time to go to sleep and when it's time to wake up. Scientists track this clock by measuring the amount of melatonin (褪黑激素) circulating in a person's blood at any given time.

    In a healthy sleeper, melatonin levels rise a few hours before bedtime, stay high through the night, and then settle back down when it's time to wake up.

    In our modern society, however, most of us stay up many hours past sunset and would probably sleep in many hours after sunrise if we could. And the trouble is, your melatonin levels may still be high when your alarm clock goes off in the morning, which leads to fatigue. It may also have other health consequences as well, such as diabetes (糖尿病), overweight and heart disease.

    Professor Kenneth Wright of the University of Colorado in the US wanted to see if our body clocks can be reset by a short stay in nature. His team recruited (招募) fourteen physically active volunteers in their 20s and 30s. Nine went on a weekend camping trip, while the other five stayed home. At the end of the weekend, the researchers reported that in just two days, the campers' body clocks had shifted so that their melatonin levels began to rise more than an hour earlier than they did before they left on the trip. By contrast, the body clocks of the group that stayed home shifted even later over the course of the weekend.

    “This tells us we can reset our clocks fast,” Wright said.

    Therefore, if you want to change your sleep patterns you could try to increase your exposure to natural light during the day and decrease the amount of artificial light you see at night. And if that doesn't work，there's always camping.

    For the past 15years, factory owner Kamal Parmar has been running an after-school program for slum kids in Ahmedabad, India, helping them with basic skills like reading and writing and even preparing for their school tests.

    Parmar's story began one afternoon 15 years ago. He stopped a few kids returning home from the local school and took their exam paper and asked them a few questions. Shockingly, he made a shocking discovery--the students, even the older ones, knew nothing about reading except the alphabet. And that left him thinking that something should be done for these children.

    So he invited the kids to visit his workshop every evening, where he set up a temporary classroom with metal desks. The shabby school started off with 10 students. Today, the Footpath School has a total of 155 students and many of the kids that Parmar has taught in the past 15yearshav e gone to attend college and build successful careers.

    Despite having studied only till the seventh grade, he has been able to teach the kids by inventing creative techniques. He asks them to read first and then to form questions on their own and read them out. In this way, many kids learn all seven subjects in six months.

    Parmar's family are very supportive of his project and are proud to see how much of an impact he has had on the kids. His students love him. Ten of his ex-students are currently serving as teachers at the school and he doesn't have to employ any teachers.

    For those who are inspired by his story, but can't actually volunteer at school, Parmar has a simple piece of ads ice: “Try to educate just one child a year, and see the difference it makes to the society.”

    People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a similar problem. They often accept the opinions or ideas of other people. Other times they begin to act without thinking. They try to find a solution by trial and error. However, when all these methods fail, the person with a problem has to start analyzing. There are six stages in analyzing a problem.

    First the person must recognize that there is a problem. For example, Sam's bicycle is broken, and he cannot read it to class as he usually does. Sam must see that there is a problem with his bicycle.

    Next the thinker must define the problem. Before Sam can repair his bicycle, he must find the reason why it does not work. For instance, he must determine if the problem is with the gears, the brakes, or the frame. He must make his problem more specific.

    Now the person must look for information that will make the problem clearer and lead to possible solutions. For instance, suppose Sam decided that his bike does not work because there is something wrong with the gear wheels. At this time, he can look in his bicycle repair book and read about gears. He can talk to his friends at the bike shop. He can look at his gears carefully.

    After studying the problem, the person should have several suggestions for a possible solution. Take Sam as an illustration. His suggestions might be: put oil on the gear wheels; buy new gear wheels and replace the old ones; tighten or loosen the gear wheels.

    Eventually one suggestion seems to be the solution to the problem. Sometimes the final idea comes very suddenly because the thinker suddenly sees something new or sees something in a new way. Sam, for example, suddenly sees that there is a piece of chewing gum between the gear wheels. He immediately realizes the solution to his problem: he must clean the gear wheels.

    Finally the solution is tested. Sam cleans the gear wheels and finds that afterwards his bicycle works perfectly. In short, he has solved the problem.

    Moving flight times from night to day could reduce air travel's contributions to global warming, a new study suggests. Scheduling more (lay time flights may reduce the influence of contrails ——the visible lines of white steam that many planes leave behind them in the sky.

    The role of contrails in climate change is still being studied, but some scientists believe they contribute to the greenhouse effect by trapping heat in the atmosphere.

    Nicola Stuber, first author of the study, suggests that contrails' overall impact on climate change is almost as big as that of aircraft^? s carbon dioxide emissions (排放)over a hundred-year period. Aircraft are believed to be responsible for 2-3% of human carbon dioxide emissions. Like other high, thin clouds, contrails reflect sunlight back into space and cool the planet. However, they also trap energy in the atmosphere and increase the warming effect.

    Stuber and other scientists believe that the effect of the contrails is big. "On average, the green-house effect controls the effects of contrails, said Stuber, a meteorologist at England's University of Reading." The warming effect is far greater for contrails left by night flights," Stuber added. "The cooling effect only happens (luring the day when the sun is up. During the night the greenhouse warming is no longer balanced and that is why the contribution of night-flight is so large."

    Most commercial airline traffic occurs during daylight hours. For example, only one in four United Kingdom flights is a night flight, but those flights create some 60% of the warming created by contrails, the study reports.