Galdwell's book, Blink, is all about first impressions and what he calls “rapid cognition（认知）”. In his own words, “It's a book about the kind of thinking that happens in a short time. When you meet someone for the first time or read the first few sentences of a book, your mind takes about two seconds to jump to a series of conclusions.”

    Galdwell points out that most scientific tradition is based on a great deal more than two seconds' thought though years of scientific study can come from a quick observation. As for rapid cognition, Gladwell realizes some first impressions don't seem to be based on anything. He noticed that Americans support taller candidates（候选人）. In fact, since 1900, only four candidates have beaten men who are taller than themselves. With this in mind Gladwell got in touch with 500 companies in the US and found that almost all of their managers were tall. Gladwell said, “That's weird. There is no connection between height and intelligence or height and decision-making…But for some reason companies chose tall people for leadership roles. I think that's an example of bad rapid cognition.”

    As an example of good rapid cognition, he tells the story of the Emergency Room doctors at Cook County Hospital in Chicago. A few years ago, the hospital changed the way they diagnosed（诊断）heart attacks. Their doctors took no notice of the patient's age, weight and medical history and gave most of their attention to a few really important pieces of information, such as blood pressure and heart rate. And what happened? Cook County is now one of the best places in the United States for diagnosing chest pain.

    Gladwell believes the power of first impressions should be studied further. “The first task of Blink is to show the fact: decisions made very quickly can be as good as decisions made slowly and carefully.”

    Youth volunteers from Beijing University visited Song tang Hospital, a care clinic for the aged and dying patients, during the second Global Youth Service Day on April 21．

    Thirty student volunteers from the university's School of International Studies sat at the beds of the patients in their specially decorated “care huts”. They talked with them and gave massages （按摩）to patients kept in their beds.

    I felt sorry that I could not offer more to these people than talking with them and trying to cheer them up, said Deng Yetao, 20, a third - year student. “But it occurred to me that they need more care and love than babies. They are afraid of the coming death. Their loneliness is worse than physical pains.”

    “Even though they are suffering a lot, the majority of the elderly people want to talk to us. Each of them has a lot of life experiences and philosophies to share. Instead of doing them a favor, I felt I was gaining a valuable lesson. Said Mao Xiaohua, another third - year student.

    Mao talked with two elderly patients for a whole afternoon. The fact that most of the patients in the 80 - room clinic are aged people with diseases which will lead to death soon made the volunteers' hearts heavy.

    Ninety - one percent of the patients will spend the last days of their lives in the clinic, according to a survey by the hospital.

    Daily visits and services by social workers and youth volunteers are a very important part of their programmer. A total of 330, 000 Beijing students from 119 universities and colleges have visited the hospital. Many continue to offer services in their spare time. Some of them volunteer to hold the hands of dying patients during the last minutes of their lives.

    Yin Hang, a student from Beijing Medical College, said he felt“ the glory of life” as he saw the fading smile on the face of the old man who passed into a deep unconsciousness（昏迷）while he was holding his hands.

    Bookstores are a traveller's best friends: they provide convenient shelter in bad weather, and they often host readings and other cultural events. Here is a look at the world's six greatest bookstores.

    Adrian Harrington—since 1971. Rare books; rare first editions; leather—bound sets and general antiques (古玩). Address: 64A Kensington Church Street, Kensington, London, England, U.K.

    Another Country— Kreuzberg, Berlin, Germany. Another Country is an English language second-hand bookshop which is mostly used as a library. They have about 20,000 books that you can buy or borrow. Some regular events are held at the shop, such as readings, cultural events, social evenings and film nights.

    Atlantis Books—Oia, Santorini, Greece. Atlantis Books is an independent bookshop on the island of Santorini, Greece, founded in 2004 by a group of friends from Cyprus, England, and the United States. Throughout the year it has hosted literary festivals, film screenings, book readings, and good old-fashioned dance parties.

    Bart's Books—Ojai, California, U. S. A. "The World's Greatest Outdoor Bookstore", a bookstore founded by Richard Bartinsdale in 1964. Shelves of books face the street, and regular customers are asked to drop coins into the door's coin box to pay for any books they take whenever the store is closed.

    10 Corso Como—Milan, Italy, Extensive selection of publication on art, architecture, design, graphics and fashion, along with a strong emphasis on photography. It was founded in 1990 in Milan, Italy, by Carla Sozzani.

    The Bookworm—A bookshop, library, bar, restaurant and event space, now with five locations in three cities in China—Beijing, Suzhou and Chengdu. The interconnecting rooms with floor-to-ceiling books on every wall are light and airy in summer, yet warm and comfortable in winter.

     Aspirin has long been praised as a wonder drug. An aspirin a day keeps the doctor away. Many Americans have been taking one aspirin a day, believing it would protect them from a heart attack a stroke(中风), and even a cancer. But several recent studies have thrown this into question. Daily use of aspirin can have serious side effects(副作用).

    One study followed more than 19,000 healthy people aged 65 and older. They were required to take either 100 mg of aspirin (a little more than the 81 mg dose that most people take) or a placebo(无效对照剂) every day for about years, Not only did people in the aspirin group not lower their risk of heart disease, or disability but they were also more likely to suffer from bleeding into the brain or stomach. And they were more likely to die because of an increased risk of giving in to cancer, Similarly, an experiment of more than 12. 500 people aged 55 and older who have a cardiovascular (心血管的)risk found no benefit to taking aspirin daily. In study of more than 15,000 people with diabetes(糖尿病), a daily aspirin did prevent heart attacks and strokes, but it also caused serious bleeding.

    Although some earlier research has proved that aspirin can help people who have already had or are at high risk for heart attacks or strokes, the drug's value is not so clear for people, especially older people,

    The bottom line is this: Be smart and be safe. You should not take daily low-dose aspirin without talking to a doctor if you.

    ● Are over the age of 70

    ● Drink wine regularly

    ●Are on any simple medical operations

Volunteer Day

    What better way is there to enjoy your own hobbies while helping others at the same time? Come to Volunteer Day and choose which activity you'd like to join for the day. See below for a schedule of events on Volunteer Day.

    Volunteer Day schedule:

    7:30a.m.: Meet at the Community (社区) Center for juice and bagels.

    8:00—8:30 a.m.: Choose which activity you'd like to help with for the day.

    8:30 a.m.: Board the bus to your activity site.

    9:00 a.m.—3:30 p.m.: Work as a volunteer.

    3:30 p.m.: Board the bus that will take you back to the Community Center.

    See below for a list of volunteer opportunities for Volunteer Day so you can begin thinking about which activity you might want to join.

    A list of volunteer activities:

    Paint houses: Do you enjoy making art? If so, this volunteer opportunity might be just right for you! Happy Homes is a local organization that provides home repairs for needy people in the form of painting. For elderly or physically disabled people who cannot do repairs to their homes, Happy Homes provides volunteer painters to repaint old homes; outside or in. Happy Homes also provides painters to create beautiful wall paintings inside schools or community centers.

    Plant flowers: Do you enjoy being outside in nature? City Parks Association has many great opportunities for people who love to be outdoors. Help plant flowers and bushes in city parks; help lay paths at Cave Springs Park, or help pick up rubbish around the river banks. These activities are very active, so remember to be prepared with plenty of drinking water!

    Read to children: Do you enjoy working with young children? Do you like books? Love and Learning is an organization that provides volunteers to help children with learning disabilities. Read books out loud to groups of children four to six years old, or read one-on-one with struggling readers seven to eight years old.

    Play with animals: Do you love animals? Lovely Friends is an organization that visits local animal shelters and provides volunteers to spend time with the animals while their cages are being cleaned. Play with puppies, snuggle with cats, or hand-feed rabbits.

People have long watched moths （飞蛾） and other flying insects flock to streetlamps, lights and flames. These insects appear attracted by the light. But a new study suggests they may just lose track of which way is up.

Previous theories say light probably blinds flying insects so that they get trapped by the light, or maybe they interpret light at night as a place to fly for a quick escape. Now the new study suggests flying insects instead turn their backs to the sky's light to keep their feet pointing toward the ground. Insects naturally turn their backs toward light. But when that light is from an artificial source, it may affect their sense of direction, leading to them flying in circles or diving toward the ground.

At a field station in Costa Rica, Samuel Fabian, an entomologist from Imperial College London in England and his teammates set up hanging and standing lights, and then used high-speed cameras to track wild, flying insects including moths and flies. Some circled the lights endlessly, and others flew sharply upward, losing speed until they couldn't fly any higher. When the light source pointed up, some insects turned around and headed for the ground. During the flight, the insects always kept the lights at their back even if they'd end up crashing. Crash landings were common when the team lit up a white sheet on the floor. But not when a white sheet—stretched into a height above the floor—was bathed in diffuse （漫射） light, much as the sky would be, insects flew through the area without getting trapped by the light.

The team also observed some species in a lab. Moths and dragonflies generally behaved like the wild insects, and they kept the light at their backs. However, in the lab, fruit flies, like oleander hawk moths—which can fly in the dark—could fly over LED lights without being thrown off course. In the wild, though, the moths still crashed. Maybe this is because, Fabian says, the insects can sometimes control their response to light, or over time, they might learn to avoid artificial light.