Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.

    Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses（球场） in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.

    There are many environment-friendly sports. Power walking is one of them that you could take up today. You don't need any special equipment except a good pair of shoes; and you don't have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.

    Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be "green gyms". They are better replacements（代替物）for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it's free.

    When asked about happiness, we usually think of something extraordinary, an absolute delight, which seems to get rarer the older we get.

    For kids, happiness has a magical quality. Their delight at winning a race or getting a new bike is unreserved (毫无掩饰的).

    In the teenage years the concept of happiness changes. Suddenly it's conditional on such things as excitement, love and popularity. I can still recall the excitement of being invited to dance with the most attractive boy at the school party.

    In adulthood the things that bring deep joy—love, marriage, birth—also bring responsibility and the risk of loss. For adults, happiness is complicated.

    My definition of happiness is “the capacity for enjoyment”. The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from the company of friends, the freedom to live where we please, and even good health.

    I experienced my little moments of pleasure yesterday. First I was overjoyed when I shut the last lunch-box and had the house to myself. Then I spent an uninterrupted morning writing, which I love. When the kids and my husband came home, I enjoyed their noise after the quiet of the day.

    Psychologists tell us that to be happy we need a mix of enjoyable leisure time and satisfying work. I don't think that my grandmother, who raised 14 children, had much of either. She did have a network of close friends and family, and maybe this is what satisfied her.

    We, however, with so many choices and such pressure to succeed in every area, have turned happiness into one more thing we've got to have. We're so self-conscious about our “right” to it that it's making us miserable. So we chase it and equal it with wealth and success, without noticing that the people who have those things aren't necessarily happier.

    Happiness isn't about what happens to us—it's about how we see what happens to us. It's the skillful way of finding a positive for every negative. It's not wishing for what we don't have, but enjoying what we do possess.

    Food is one of the necessities in our daily life. It serves as a form of communication in two fundamental ways. Sharing bread or other foods is a common human tradition that can promote unity and trust. Food can also have a specific meaning, and play a significant role in a family or culture's celebrations or traditions. The foods we eat—and when and how we eat them—are often unique to a particular culture or may even differ between countrysides and cities within one country.

    Sharing bread, whether during a special occasion or at the family dinner table, is a common symbol of togetherness. Many cultures also celebrate birthdays and marriages with cakes that are cut and shared among the guests. Early forms of cake were simply a kind of bread, so this tradition hits its roots in the custom of sharing bread.

    Food also plays an important role in many New Year celebrations. In the southern United States, pieces of corn bread represent blocks of gold for prosperity (兴旺) in the New Year. In Greece, people share a special cake called vasilopita. A coin is put into the cake, which signifies (预示) success in the New Year for the person who receives it.

    Many cultures have ceremonies to celebrate the birth of a child, and food can play a significant role. In China, when a baby is one month old, families name and welcome their child in a celebration that includes giving red-colored eggs to guests. In many cultures, round foods such as grapes, bread, and moon cakes are eaten at welcome celebrations to represent family unity.

    Nutrition is necessary for life, so it is not surprising that food is such an important part of different cultures around the world.

    An 80-year-old man was sitting on the sofa in his house along with his 45-year-old son. Suddenly a crow (乌鸦) landed on their window.

    The father asked his son, "What is that?"

    The son replied, "That is a crow."

    After a few minutes, the father asked his son for the second time, "What is this?"

    The son said, "Father, I told you just now. It's a crow."

    After a little while, the father asked his son the same question for the third time, "What is this?"

    This time, the son said to his father in a low and cold tone, "It's a crow, a crow."

    After a moment, the father yet again asked his son for the fourth time, "What is this?"

    This time his son shouted at his father, "Why do you keep asking me the same question again and again? I have told you already, 'IT IS A CROW'. Are you not able to understand this?"

    A minute later the father went to his room and came back with a diary, which he had kept since his son was born. On opening a page, he asked his son to read that page.

    Today my little son aged three was sitting with me on the sofa when a crow suddenly landed on the window edge. My son asked me 23 times what it was, and I replied him 23 times that it was a crow. I hugged him lovingly each time he asked me the same question. I didn't at all feel angry, but instead felt affection for my son.

    If your parents reach old age, do not look at them as a burden, but speak to them gently, and be kind to them. From today say this aloud, "I want to see my parents happy forever. They have cared for me ever since I was a little child. They have always showered me with love. I will take care of my old parents in the best way no matter how they behave."

    To start a conversation about the secret to happiness, ABC News' health editor Dr. Richard Besser hosted a Twitter chat Tuesday.  Experts from the National Institutes of Health, Mayo Clinic, Harvard University and TEDMED, as well as clinicians and people from across the country, joined the one-hour discussion. There are countless ways to measure happiness. With research on the topic increasing, researchers have carried out surveys to study people's sense of well-being.

    Angela Haupt, health and wellness editor for U.S. News and World Report, said, “Happiness indicators include life satisfaction, health and community engagement.”

    @toddkashdan added that, “despite problems with self-reports, there is no better way to measure happiness than focusing on personal thoughts and feelings.”

    While scientists try to find out what caused happiness, others often believe that true joy doesn't exist. Dr Friedman, a psychiatrist at New York Presbyterian-Weill Cornell Hospital, said that “happiness is hard to measure, but easy to recognize.”

    Still, common themes about satisfaction come up in these conversations. Finding meaning in daily work was important. Indeed, researchers have found that having creative and purposeful work to do is a key factor in happiness.  But people were quick to state the importance of balancing work and family obligations.

    Chat participants(参与者) agreed that money does not surely bring happiness. And studies agree once people's basic needs like food and housing are met, higher incomes do little to improve your happiness.  At last, people found value in their connections with others.  Research shows that having support through friends, family, and social networks can bring happiness.  Many agree with @drmommy, who said “I measure my happiness by the loving people that are around me.”

    So, can we increase our happiness?  Expressing gratitude(感激) is a possible way of feeling happiness. Researchers have found that people who regularly write down things for which they are grateful in “gratitude journals” have increased satisfaction in life, higher energy levels, and improved health.  In one study, people who read a letter of appreciation to someone in their lives prove happier almost one month later.  Performing acts of kindness can raise your moods

    Data show that our relationships matter, too. People who are interested in meaningful conversations with friends or family are reported to be happier than those who don't. Close interpersonal ties and strong social support are important for happiness.

Guide to Stockholm University Library

    Our library offers different types of studying places and provides a good studying environment.

    Zones

    The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer.  The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work.

    Computers

    You can use your own computer to connect to the Wi-Fi specially prepared for notebook computers; you can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor.

    Group-study Places

    If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps. There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week.

    Storage of Study Material

    The library has lockers for students to store course literature. When you have obtained at least 40 credits (学分)， you may rent a locker and pay 400 SEK for a year's rental period.

    Rules to be Followed

    Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls.

    Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you.