Sleep deprivation(缺失)is an important hidden factor in lowering the achievement of school pupils, according to researchers carrying out international education tests.

    It is a particular problem in richer countries with sleep experts linking it to the use of mobile phones and computers in bedroom late at night. Sleep deprivation is such a serious problem that lessons have to be dragged down to a lower level to suit sleep-deprived learners, the study found. The international comparison, carried out by Boston College, found the United States to have the highest number of sleep-deprived students, with 73% of 9- and 10-year-olds and 80% of 13- and 14-year-olds identified by their teachers as being negatively affected.

    In literacy(读写能力) tests there were 76% of 9- and 10-year-olds lacking sleep. This was much higher than the international average of 47% of primary pupils needing more sleep and 57% among the secondary age group.

    Other countries with the most sleep-deprived youngsters were New Zealand, Saudi Arabia, Australia, England, Ireland and France. High-performing Finland is also among the most lacking in sleep. Countries with the best records for getting enough sleep include Azerbaijan, Kazakhstan, Portugal, the Czech Republic, Japan and Malta.

    The analysis was part of the huge date-gathering process for global education rankings, the Trends in International Mathematics and Science Study(TIMSS)and Progress in International Reading Literacy Study(PIRLS)

    “I think we underestimate the impact of sleep. Our data show that across countries internationally, on average, children who have more sleep achieve higher in maths, science and reading. That is exactly what our data show,” says Chad Minnich of the TIMSS and PIRLS International Study Center.

    “It's the same link for children who are lacking basic nutrition,” says Mr Minnich, based at the Lynch School of Education, Boston College. “If you are unable to concentrate, to attend mentally, you are unable to achieve at your best level, because your mind and body are in need of something more basic. Sleep is a fundamental need for all children. If teachers report such large proportions of children suffering from lack of sleep, it's having a significant impact. But worse than that, teachers are having to adjust their instruction based on those children who are suffering from a lack of sleep. The children who are suffering from a lack of sleep are driving down instruction.”

    That means that even the children who are getting enough sleep are still suffering from this sleep-related lowering.

    Augusto Esquivel is a sculptor who, in his own words, is “crazy with comparisons of reality and potential and the balance between them.” Perhaps the best example of what he's talking about are his most famous creations: the suspended(悬挂的) button sculptures.

Made entirely from buttons hanging on various lengths of string, Esquivel's sculptures are made to look like common objects: a piano, a gumball machine, and even a toilet. If it wasn't for the clear string hanging above, these objects, these sculptures, would look solid, yet you can put your hands right through them. The process starts with him deciding on a subject and setting the acrylic （丙烯酸树脂）from where the buttons are being suspended. He buys buttons of different shapes and sizes, paints them with spray paint, and carefully hangs them. After that, it's a manner of hanging each individual button, which takes a lot of time. For his piano, for example, he individually hung over 60 pounds worth of tiny buttons.

Esquivel's sculptures, while mostly housed inside art galleries, perfectly capture one of the main principles of street art: something that is eye-catching and something that invites interaction. Often the best sculptures outside the art galleries aren't the ones behind guards and fencing, but the ones people can go right up to and touch. In Vancouver, a series of laughing old men are attracting people for pictures and to just generally hang around, but the people who simply walk by and see the sculptures almost always leave with a smile on their face. That's good street art: it draws the viewer in rather than relying on a gallery to draw in an audience and point them to certain pieces.

Esquivel's art is not only a presentation of talent, something that mentions larger philosophical questions, like the ones he stated above, but also just the right combination of interesting idea and painstaking work. One can look at his work in a critical way, or simply appreciate his idea and execution(艺术品的制作).

    Someone sent me an email urging me to acquire a lot more resources, suggesting could do so much more good if I had an 8 or 9 figure net income of 6 like I've been doing for years. He claimed to have acquired a great deal of wealth himself and found it highly beneficial to fueling his path with a heart.

    As I consider his suggestion, I find myself not having much clarity(清晰的思维)as to what I'd do with I million or 10 million more money flowing through my life. I put so much attention on creativity, fulfillment, exploration, relationships, etc. that I find it difficult to intelligently imagine how more financial resources could provide extra fuel for that, except in small ways or in ways that aren't particularly meaningful to me.

    Lately I've been considering what it would be like to deliberately reduce my income for a while and see if I could live on much less，just for the experience. What if I capped my net personal income at $10,000 per year, for instance? That isn't such a big deal to me, though, since I already went through a period of low income like that during the 1990s, and I learned that I could still do what I love regardless of income.

    I've never worked in a business environment-the only job I've ever had was working for $6/hour in a video game store while I was in college. So I've never seen how larger operations allocate resources. That's probably why I haven't pushed myself to acquire more. As I mentioned in my book. Money and Your Path With a Heart，my main financial goal in life was to make money irrelevant in my life.

    I'm not interested in building an empire. What interests me is exploring personal growth and sharing what I learn along the way. In some ways I feel that acquiring and acquiring and allocating more resources could become a big distraction. I'm already doing what I want to be doing, so why rick distracting myself to acquire more resources, especially when I lack the idea about how I should treat such resources? I like having freedom and flexibility，and I don't really see how more resources would meaningfully improve that.

    The Olympic Games are well known and always receive the world's attention, but there has been another little-known Olympic event in the UK for hundreds of years. And it's an event which some say helped start the Olympic movement in this country. The Cotswold Olimpicks take place every year on a Friday in spring. They are held in a village in England known as the Cotswold. It isn't clear when the first event took place but some say it was as early as 1612.

    The Cotswold Olimpicks were the idea of a lawyer called Robert Dover but no one knows exactly why he organized the games. Some people say he wanted to encourage people to support their king and country. Another explanation is that Dover was keen (渴望的) to bring people together, in particular the rich and poor from the local community. Whatever the reason, the yearly games quickly became popular. People competed in familiar activities such as horse-racing, running, jumping, and wrestling; famous people of the time attended it and poets wrote about the celebrations. It is even said that Shakespeare mentioned the Cotswold Olimpicks in The Merry Wives of Windsor, though the play may have been written some time before the first games.

    As the Cotswold Olimpicks grew in popularity, a group of people known as the Puritans(清教徒) started to object to them for religious reasons, saying they encouraged bad behaviour. The games came to an end at the start of the English Civil War but in 1660 they were re-introduced. Over time they became more and more popular and there are records of 30, 000 people attending in one year. However, the games also attracted people who were more interested in the celebrations than the sporting events. Finally, they came to an end once again in 1852. However, this was not the end of the Cotswold Olimpicks. They were re-introduced again in 1966 and have since been recognized by the British Olympic Committee. Out of respect to their history, the modem games are watched over by a man dressed as Sir Robert Dover, riding on horseback and accompanied by a representative of King James I. Unlike the real Olympic Games, the Cotswold Olimpicks has only about two hours and they are followed by celebrations in the village.

    How many men do housework? Recently a European commission (委员会) tried to find out people's ideas and reactions to the women's movement. As part of their survey, they asked many men and women the question, “Who does the housework?” The men answered very differently from the women!

    The housework they asked people about was: preparing meals, washing dishes, cleaning the house and babysitting. 48% of British husbands said they did these things. 37% of Danish (丹麦的) men helped in the house. But only 15% of Italian men said they did the housework; many of them said they never helped at all!

    But there was an interesting point of view from the wives. According to British wives, only 38% of their husbands helped in the house. And Italian wives said that their husbands hardly ever helped. The Italian and British men did not tell the truth! The Commission found that Danish men were the most truthful husbands; their answers were the same as their wives' answers.

    Do the men you know help in the house? Do you think the survey gives a true picture in your experience? Write and tell us what you think.

    The elephant was lying heavily on its side, fast asleep. A few dogs started barking at it. The elephant woke up in a terrible anger: it chased the dogs into the village where they ran for safety. That didn't stop the elephant. It destroyed a dozen houses and injured several people. The villagers were scared and angry. Then someone suggested calling Parbati, the elephant princess.

    Parbati Barua's father was a hunter of tigers and an elephant tamer. He taught Parbati to ride an elephant before she could even walk. He also taught her the dangerous art of the elephant roundup-how to catch wild elephants.

    Parbati hasn't always lived in the jungle. After a happy childhood hunting with her father, she was sent to a boarding school in the city. But Parbati never got used to being there and many years later she went back to her old life. "Life in the city is too dull. Catching elephants is an adventure and the excitement lasts for days after the chase," she says.

    But Parbati doesn't catch elephants just for fun."My work," she says," is to rescue man from the elephants, and to keep the elephants safe from man." And this is exactly what Parbati has been doing for many years. Increasingly, the Indian elephant is angry: for many years, illegal hunters have attacked it and its home in the jungle has been reduced to small pieces of land. It is now fighting back. Whenever wild elephants enter a tea garden or a village, Parbati is called to guide the animals back to the jungle before they can kill.

    The work of an elephant tamer also involves love and devotion. A good elephant tamer will spend hours a day singing love songs to a newly captured elephant."Eventually they grow to love their tamers and never forget them. They are also more loyal than humans," she said, as she climbed up one of her elephants and sat on the giant, happy animal. An elephant princess indeed!