Chimps(黑猩猩) will cooperate in certain ways, like gathering in war parties to protect their territory. But beyond the minimum requirements as social beings, they have little instinct (本能) to help one another. Chimps in the wild seek food for themselves. Even chimp mothers regularly decline to share food with their children, who are able from a young age to gather their own food.

In the laboratory, chimps don't naturally share food either. If a chimp is put in a cage where he can pull in one plate of food for himself or, with no great effort, a plate that also provides food for a neighbor to the next cage, he will pull at random —he just doesn't care whether his neighbor gets fed or not. Chimps are truly selfish.

Human children, on the other hand are naturally corporative. From the earliest ages, they decide to help others, to share information and to participate in achieving common goals. The psychologist Michael Tomasello has studied this cooperativeness in a series of experiment with very young children. He finds that if babies aged 18 months see an unrelated adult with hands full trying to open a door, almost all will immediately try to help.

There are several reasons to believe that the urges to help, inform and share are not taught, but naturally possessed in young children. One is that these instincts appear at a very young age before most parents have started to train their children to behave socially. Another is that the helping behaviors are not improved if the children are rewarded. A third reason is that social intelligence develops in children before their general cognitive（认知的）skills, at least when compared with chimps. In tests conducted by Tomasello, the human children did no better than the chimps on the physical world tests but were considerably better at understanding the social world.

The core of what children's minds have and chimps' don't is what Tomasello calls shared intentionality. Part of this ability is that they can infer what others know or are thinking. But beyond that, even very young children want to be part of a shared purpose. They actively seek to be part of a “we”, a group that intends to work toward a shared goal.

    A guiding principle for master cellist Yo-Yo Ma is that “the intersection(交汇) of cultures is where new things appear.” Certainly his biography is an intersection of cultures. He was born to Chinese parents in Paris, France; both his parents were musicians. When he was seven, his family moved to the United States. Gifted for his age, Ma attended Juilliard, the world famous music institute. He then chose to earn a liberal arts degree at Harvard rather than focusing only on music.

    Even in his earliest performing years, Yo-Yo Ma had a strong belief that it was important to share music with all kinds of people. Stories are told about how he once performed in the hallway of a large building for people who were unable to get tickets to his concert. He remained interested in making music accessible to diverse audiences and furthered his interest in different cultures when he visited the Bushmen of the Kalahari. He developed a vehicle to further these ideals when he founded the Silk Road Project.

    As he has said, the Silk Road is a metaphor(隐喻) for a number of things: as the Internet of ancient times, the routes were used for trade, by religious people, adventurers, scientists, storytellers. Everything from algebra to Islam moved along the Silk Road. It's the local-global thing. In the cultural world, you want to make sure that voices don't get lost, that rich traditions continue to live, without becoming common.

    This lesson explores the philosophy behind Yo-Yo Ma's founding of the Silk Road Ensemble(乐团), his belief that the arts, and particularly music, can make the world better, and that through cooperation, one can both preserve tradition and shape cultural evolution. Students also explore their own attitudes toward the arts, writing reflective essays on how the arts have played a role in their own lives.

    Traditional Chinese medicine (TCM) is gaining global popularity. According to a government white paper, TCM has been introduced in 183 countries and regions around the world.

    Westerners' understanding of TCM, however, may be limited to acupuncture, cupping and massage(针灸，拔罐和按摩). For instance, the purple, injury-like marks left on U. S. swimmer Michael Phelps，back from cupping for the purpose of relaxing his muscles and reducing pain became the center of attention during the Rio Olympics in 2016.

    As a matter of fact, Chinese herbs play a more important role in getting rid of diseases and keeping the body in good condition in the TCM treatment system than physical treatment. It is therefore disheartening to know that while 103 World Health Organization member countries have given approval to the practice of acupuncture, not many recognize Chinese herbal medicine. TCM falls far behind Western medicine owing partly to the slow development of Chinese herbs.

    Herbs are made into pills, powder and soup, and the kind of herbs used, their quality and quantity, and the processing of the ingredients (原材料) jointly determine the effectiveness of the prescription. Compared with Western medicine, which has standardized drug production processes and treatment methods, TCM lacks standardization, with the chemical composition and functions of its medicines being unclear and their effects being unstable. Fortunately, standardization has improved in recent decades, with an increasing number of factories producing patented TCM drugs.

    Another factor that has prevented the development of TCM prescription drugs is the lack of creativity. While Western medicine-making companies come up with new products every year, TCM drug producers tend to make medicines according to prescriptions handed down from the past. Chinese chemist Tu Youyou's winning the 2015 Nobel Prize in Physiology or Medicine for her research into malaria (疟疾) treatment may drive creativity to some extent in China's TCM industry. However, the current state of affairs cannot be changed within a short time.

    It's not easy being a teenager— nor is it easy being the parent of a teenager. You can make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important to give your child the space he needs to grow while gently letting him know that you'll still be there for him when he needs you.

    Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use or careless driving; consider everything else open to discussion. If your child is unwilling to discuss something, don't insist he tell you what's on his mind. The more you insist, the more likely that he'll clam up. Instead, let him attempt to solve things by himself. At the same time, remind him that you're always there for him if he seeks advice or help. Show respect for your teenager's privacy (隐私). Never read his mail or listen in on personal conversations.

    Teach your teenager that the family phone is for the whole family. If your child talks on the family's telephone for too long, tell him he can talk for 15 minutes, but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls, but teaches your teenager moderation (节制). Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part-time job.

    I waited half an hour, set the board, and sat in the studio, reviewing my questions until the telephone lines flashed.

    "Hello?"

    "This is Connie Chung. I'm so sorry I'm late."

    Connie Chung was one of the only four women anchors（主播）to make it into the club of major evening network television news. For almost an hour we talked about the industry. When I asked if she ever had an instructor throughout her trials, she turned around and offered to instruct me. When I asked why she decided to do it, she simply replied, "Because you're good."

    That afternoon I rushed home and told my mother what had happened. Without looking up, she just said "Good for you." Hearing this, I felt a sense of loss.  Her consistent response always made me feel under-appreciated.

    Until then I had been searching for something that I would never get—that sense of love and acceptance in a house full of negativity（消极）.

    I knew I needed to get rid of all the negativity in my life first, so I packed my bags and walked out of the house, thinking a risk would allow me to open myself to the world again and receive all the positive energy that I needed.

    Then radio became my way of connecting with others. My ability to book high-level guests and celebrities（名人）was gradually recognized and eventually all the words of encouragement from past guests and colleagues helped me to re-build my confidence levels. "I can do this," I kept telling myself, and pushed even harder to find my next aim.

    People had faith in me, so I developed faith in myself. Their positive attitudes towards themselves and towards me helped me develop my own positive attitude, leading to productive interactions with celebrities and adding to my list of instructors.

    I may not have started life surrounded by positivity but I surely feel that I am surrounded by it now. It's amazing how positivity builds on itself.

    Jarrett Little was road testing his mountain bike outside of Columbus, Georgia, when his riding partner, Chris Dixon, stopped suddenly. Something in the distance moving among the trees had caught her attention. It turned out to be a sandy-colored five-month-old puppy.

    "He was really thin, ribs showing, and a broken leg," Little told John Parks, a reporter from CBS News. The cyclists fed the friendly pup and shared their water. They also quickly realized that the dog was coming with them, although they had no idea how. They were more than seven miles from downtown and riding bikes. "We couldn't leave him," Little said. "Out there next to the Oxbow Meadows, he was going to become the lunch of an alligator living in the river."

    Suddenly, Little had an idea. He carefully picked up his new friend and slipped the 38-pound dog's hind legs (后肢) into the back pockets of his cycling jacket. Then he hung the dog's front paws over his shoulders.

    "He was injured, so he wasn't trying to fight," Little says. "He was also happy that we were there, touching him, and hadn't taken off on him."

    The group's 30-minute ride into town ended at a bike store, where they got more water and food for the dog. That was when Andrea Shaw, an accountant from Maine in town on business, happened by. The dog made a headed straight for her, licking and "loving on her," says Dixon. Shaw was struck and, after learning what had happened, declared her intentions: "I am keeping this dog."

    Shaw called him Columbo and scheduled an operation on his leg. Today, Columbo is living the high life on a farm with a horse, a pony, a six-year-old boy, to keep him company. As Dixon told John Parks, "He is literally the luckiest dog alive."