We've considered several ways of paying to cut in line: hiring line standers, buying tickets from scalpers (票贩子), or purchasing line-cutting privileges directly from, say, an airline or an amusement park. Each of these deals replaces the morals of the queue (waiting your turn) with the morals of the market (paying a price for faster service).

    Markets and queues—paying and waiting—are two different ways of allocating things, and each is appropriate to different activities. The morals of the queue, “First come, first served, have an egalitarian (平等主义的) appeal. They tell us to ignore privilege, power, and deep pockets.

    The principle seems right on playgrounds and at bus stops. But the morals of the queue do not govern all occasions. If I put my house up for sale, I have no duty to accept the first offer that comes along, simply because it's the first. Selling my house and waiting for a bus are different activities, properly governed by different standards.

    Sometimes standards change, and it is unclear which principle should apply. Think of the recorded message you hear, played over and over, as you wait on hold when calling your bank: “Your call will be answered in the order in which it was received.” This is essential for the morals of the queue. It's as if the company is trying to ease our impatience with fairness.

    But don't take the recorded message too seriously. Today, some people's calls are answered faster than others. Call center technology enables companies to “score” incoming calls and to give faster service to those that come from rich places. You might call this telephonic queue jumping.

    Of course, markets and queues are not the only ways of allocating things. Some goods we distribute by merit, others by need, still others by chance. However, the tendency of markets to replace queues, and other non-market ways of allocating goods is so common in modern life that we scarcely notice it anymore. It is striking that most of the paid queue-jumping schemes we've considered—at airports and amusement parks, in call centers, doctors' offices, and national parks—are recent developments, scarcely imaginable three decades ago. The disappearance of the queues in these places may seem an unusual concern, but these are not the only places that markets have entered.

                                                                  Journey to Mecca: In the Footsteps of Ibn Battuta

    Ibn Battuta is considered one of the world's greatest travellers. During the 14^th century, he travelled about 75, 000 miles in search of knowledge and for the love of travel. To share the learning and research so highly valued by Islamic (伊斯兰教的) culture, the ruler of Morocco, Abu Inan Faris, wanted Ibn Battuta's worldwide travels recorded and published when he returned home to Morocco after almost 30 years. Ibn Juzayy, a Moroccan Court Secretary, was appointed to write down Ibn Battuta's experiences. His travel journal, The Rihla, documents this extraordinary achievement. It gives us a first-hand account of life in the 14th-century Muslim world. The original book, handwritten in Arabic, can be viewed today at the National Library in Paris.

    The early 14^th century was a favorable age for a Muslim traveller. It was nearing the end of the Golden Age of Islam, one of the great explosions of scientific and cultural achievements in world history. Caravans and sea lanes created transportation and communication networks that spread across continents, including Europe, Africa and Asia. Towns and cities were regularly visited by merchants, traders, doctors, artists, craftsmen, scholars and pilgrims (朝圣者) carrying goods and ideas. All of these promoted the exchange of goods and ideas on a scale not seen previously in world history. As an educated man with professional legal skills, Ibn Battuta enjoyed kindness, companionship and offers of employment throughout the Islamic world.

    Journey to Mecca describes the 5, 000-mile journey Ibn Battuta made in 1325 and 1326 from his hometown Tangier, Morocco, to reach Mecca, in what is now the Kingdom of Saudi Arabia, to make the pilgrimage. During this dangerous and awesome 18-month pilgrimage, he met many hindrances as he was attacked by robbers, troubled by thirst, and forced to go back to his route due to war along the Red Sea. Joining the legendary Damascus Caravan with thousands of pilgrims leaving for Mecca, he completed the final section of what would be his first of six journeys to Mecca.

    The goal of the film, Journey to Mecca, was to tell the remarkable story of Ibn Battuta and to promote a better understanding of Islam in the West, said the producers.

    I work with Volunteers for Wildlife, a rescue(救援) and education organization at Bailey Arboretum in Locust Valley. Trying to help injured, displaced or sick creatures can be heartbreaking; survival(存活) is never certain. However, when it works, it is simply beautiful.

    I got a rescue call from a woman in Mutton town. She had found a young owl(猫头鹰) on the ground. When I arrived, I saw a 2­to-3­week­old owl. It had already been placed in a carrier for safety.

    I examined the chick(雏鸟) and it seemed fine. If I could locate(定位) the nest, I might have been able to put it back, but no luck. My next work was to construct(建造) a nest in a tree.

The homeowner was very helpful. A wire basket was found. I put some pine branches(松树枝) into the basket to make this nest safe and comfortable. I placed the chick in the nest, and it quickly calmed down.

    Now all that was needed were the parents, but they were nowhere to be found. I gave the homeowner a recording of the hunger screams of owl chicks. These advertise the presence of chicks to adults; they might also encourage our chick to start calling as well. I gave the owner as much information as possible and headed home to see what news the night might bring.

    A nervous night to be sure，but sometimes the spirits of nature smile on us all! The homeowner called to say that the parents had responded(回应) to the recordings. I drove over and saw the chick in the nest looking healthy and active. And with it was the greatest sight of all — LUNCH！The parents had done their duty and would probably continue to do so.

    Ideas of making the first weeks of high school easy

    Frank. aged 21

    I think almost every kid feels both nervous and excited before their first day. You will probably love it. I know I did. You should join some sports or activities that will make your high school experience more enjoyable. Good luck!

    Sharon. aged 22

    The most important thing to keep in mind when going into high school is to be yourself. Besides, I don't know what your middle school was like, but high school teachers will not care about things such as how much homework you already have in one night. It's best to just learn to deal with things and manage your time wisely so you can achieve everything you need to do.

    Eddie. aged 20

    When I started high school, I was really nervous too, especially since I had been home schooled all through middle school and didn't really know anyone. I suppose the best advice would be to just relax. The first couple of days can be a little bit hard, but things will become easier before you know it.

    David. aged 19

    I'm not going to lie. The first day is kind of frightening. But you'll get used to it. Don't be afraid of anyone; upperclassmen will pick on(J E )you more if you let them know you're afraid. Just take it easy. Making some friends and staying with them will greatly help you get used to high school quickly. After the first week it's really not bad at all. Don't worry.

    Few of us make money by losing sleep. But three graduate students at Brown University in Providence built a company around sleep deprivation(睡眠不足).

    Jason Donahue, Ben Rubin and Eric Shashoua were working late nights in Brown's business and engineering schools. They began thinking about ways to sleep better. They discovered they weren't alone in burning the midnight oil. Around 20% of Americans get less than six hours of rest a night.

    The friends imagined a smart alarm clock that could track how much time people spend in the most restorative(有恢复作用的) stages of the sleep cycle: REM (rapid eye movement) and deep sleep. What would it cost to design such a thing? Five years of research, 20 employees, $14 million and a whole lot of doubting from investors and scientists.

    Their company, Zeo, based in Newton, Mass, launched its product in June, 2009. The Zeo device uses a headband with tiny sensors(传感器) that scan your brain for signs of four sleep states-REM, light, deep and waking sleep. The smart alarm clock displays a graph of your sleep pattern and wakes you as you're not in REM sleep. In the morning you can upload the data to the company's Web site, and so track your sleep over time. Most of the feedback(反馈) comes in the form of Zeo's ZQ score showing how well you've slept.

    “Zeo allows people to unlock this black box of sleep,” says Dave Dickinson, a health-care CEO.

    Whether any of this actually improves sleep is up to the consumer, who will also need to make lifestyle changes like cutting out alcohol before bedtime or caffeine after 3 P.M.

    For now the company is selling Zeo online only. Dickinson also plans to spread it to countries such as Australia, where sleep deprivation approaches US levels.

The Art Institute of Chicago

    Visiting time

    The museum is open daily 10:30 am-5:00 pm. The museum and its shops are closed on Thanksgiving Day, Christmas Day, and New Year's Day.

    Highlights of the Art Institute

    American Art

    Discover how artists have expressed the many aspects of the American experience through the rich variety of this collection. This tour might include the works of artists like Paul Revere, Winslow Homer, and Georgia O'Keeffe.

    Impressionism: Monet, Degas, Renoir and More

    Learn about the color and excitement of late 19th-century life as you view one of the most admired collections of French Impressionism in the world.

    Hidden Histories

    Hear stories about artists and their artworks that may be overlooked or under-appreciated for one reason or another  These could be very small or out-of-the-way works.

    For families with children

    With free admission for kids under 14 and Chicago teens under 18, the Art Institute is the perfect place for a creative outing with the whole family.

    Visit the Family Room in the Ryan Education Center, and introduce your children to the museum's collections with a variety of activities. Assemble (组装)puzzles based on masterpieces in the museum, build architectural wonders with colorful blocks, and learn about art through stories and games. Food is available at an on-site cafe. (Outside food is not allowed to be brought in.)