When he was driving home one evening on a country road, Joe saw an old lady, stranded（抛锚）on the side of the road. He stopped in front of her car and got out. Even with the smile on his face, she was worried. He looked poor and hungry. He knew how she felt. He said, “I am here to help you, madam. Why don't you wait in the car where it's warm? By the way, my name is Joe.”

    She had a flat tire（轮胎）.Joe crawled under the car, changed the tire. But he got dirty and his hands hurt. She could not thank him enough and asked him how much she owed him. He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she could give that person the assistance he needed, and Joe added, “And think of me.”

    She drove off. A few miles down the road the lady saw a small restaurant. She went in. The waitress had a sweet smile, and was nearly eight months pregnant（怀孕）. The old lady wondered how someone like her who seemed poor could be so kind to a stranger. Then she remembered Joe. After the lady finished her meal, the waitress went to get her change from a hundred-dollar bill. But she stepped right out of the door.

    When the waitress came back, she noticed something written on a napkin, “I am helping you because someone once helped me. If you really want to pay me back, here's what you do—Do not let the chain of love end with you.”

    That night when she got home, she was thinking about the money and what the lady had written. She and her husband needed money with the baby due next month. She knew how worried her husband was, and as he lay sleeping next to her, she whispered, “Everything's going to be all right. I love you, Joe.”

    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."

    Everyone needs friends. There is an old saying, "Friends are God's way of taking care of us." But how do you find real friendship and keep it?

    The American writer Sally Seamans tells young students some smart ways to find friends. Sally says finding friendship is just like planting a tree. You plant the seed and take care of it to make it grow.

    First, you should choose a friend. What makes a good friend? It is not because a person has money or good looks. A good friend should be kind and patient. For example, if you have a bad day, a good friend should listen to your complaints and do his or her best to help. To make a friend, you cannot be too shy. You should make each other happy and share your lives.

    But things cannot always be happy. Even the best friends have fights. What should you do when you have a fight with your friend? You have to talk to him or her. When there is no one around, have an honest talk. If he or she doesn't want to talk, you could write a letter.

    There are three steps to being friends again: Tell him or her how you are feeling; say what your friend has done wrong, and explain why you did this or that. Remember that friendship is the most important thing in your life.

A seismic (地震的；重大的) shift in climate science might be heating up.

New research shows that sound waves, produced by earthquakes can be used to measure temperatures in the ocean which traps 90% of the heat Earth absorbs from the sun，making long-term changes in ocean warmth, a major factor in how the world might respond to global warming.

For years the main approach of measuring ocean temperature has been Argo, an array (阵列) of 4000 automatic floats, which drifts the globe, sampling ocean water and measuring its temperature. Yet Argo measurements stop at 2000 meters.

The new technique called "Seismic Ocean Thermometry", would be especially useful in detecting long-term changes in ocean temperatures deeper than Argo's reach.

"Ocean Acoustic Tomography", the basis for the current research, was first tested nearly 30 years ago. The initial studies created sound waves artificially, basically increasing the volume on giant underwater speakers. Scientists measured the sound's travel time from the speakers to receivers thousands of kilometers away. Because ocean temperatures affect the speed of the waves, the researchers could calculate average temperatures along their paths. But some believed the noise was a threat to ocean life and the technique never took off.

The new study instead uses a natural sound source for investigation: earthquakes making a low, continuous noise beneath the seafloor off the coast of Sumatra that drum up sound waves in the ocean. On the shores of the Chagos Islands in the East Indian Ocean, between 2005 and 2016 Seismic Station Diego Garcia recorded seismic waves produced by those earthquakes. Some of those waves created physical changes in land and sea as they traveled. Others were sound waves or T waves that moved through the deep ocean, delivering valuable data about ocean temperature.

12 years of data coupled with mathematical models pointed to a temperature change of roughly 0.044 degrees per decade, a trend larger than those predicted by Argo. The findings suggest that Seismic Ocean Thermometry is a feasible method to measure changes in ocean temperature. Further data from other regions of the globe and other timeframes would help improve the warning models and predictions.

And in future studies the researchers plan to listen directly for sound waves, using a network of hydrophones, microphones which detect sound waves under water. Sound waves set the tone for a deep dive into our warming oceans even if they fail to reach 60000 miles under the sea?

In recent years American society has become increasingly dependent on its universities to find solutions to its major problems. It is the universities that have been to blame for developing the expertise to place men on the moon; for dealing with our urban problems and with our worsening environment; for developing the means to feed the world's rapidly increasing population. The effort involved in meeting these demands presents its own problems. In addition, however, this concentration on the creation of new knowledge significantly impinges on the universities' efforts to perform their other principal functions, the transmission and interpretation of knowledge-the imparting of the heritage of the past and the preparing of the next generation to carry it forward.

With regard to this, perhaps their most traditionally acknowledged task, college and universities today find themselves in a serious situation. On one hand, there is the American commitment, especially since World War Ⅱ, to provide higher education for all young people who can profit from it. The result of the commitment has been a dramatic rise in enrollments(登记入学) in our universities, coupled with a striking shift from the private to the public sector of higher education. 

On the other hand, there are serious and continuing limitations on the resources available for higher education. While higher education has become a great "growth industry", it is also at the same time a tremendous drain(耗竭) on the resources of the nation. With the vast increase in enrollment and the shift in priorities away from education in state and federal(联邦的) budgets, there is in most of our public institutions a significant decrease in expenses for their students. One crucial aspect of this drain on resources lies in the persistent shortage of trained faculty(全体教师), which has led, in turn, to a declining standard of competence in instruction.

Intensifying these difficulties is, as indicated above, the concern with research, with its increasing claims on resources and the attention of the faculty. In addition, there is a strong tendency for the institutions' organization and functioning to fulfill the demands of research rather than those of teaching.

Nanjing Yunjin brocade is traditional Chinese silk art with a history of about 1,600 years. Its complex weaving techniques, various colors and patterns, and its particular choices of materials make it valuable and ancient people said, "An inch of brocade, an inch of gold." Today, the traditional characteristics and unique skills of yunjin remain to be an award-winning art treasure. Its techniques are passed down from generation to generation by artisans. 

Zhou Shuangxi, a national-level inheritor of yunjin weaving techniques, is one of them. Back in 1973, he graduated from a mining school and was selected to become a student at the NanjingYunjin Research Institute along with five other students, just because he was "in good shape". There were only several masters in their 70s and not even a loom (织布机) to use. "The old masters finally remembered a loom was stored somewhere. When I opened the door, I saw what seemed like a pile of wood," Zhou recalled. 

"Weaving was difficult, but different from mining. Mining requires heavy physical labor, but working with the soft and thin silk requires studying and practicing in front of a loom for decades until you master the technique. My hands became quite awkward due to mining, so I used to put my hands in warm water whenever I could. In this way, they could become softer and weave the silk more easily," he said. 

Out of the six or so students, Zhou is the only one who has insisted on the trade to this day. Having devoted the past five decades to yunjin production despite all the sweat and struggles, he has developed his techniques to the point where he can weave the antique dragon robes in all their small details. He also made various artworks that not only show China's intangible cultural heritage but also serve as Zhou Shuangxi's artistic creations. 

"I am lucky to be in such a good era and I have the honor of being a representative inheritor," Zhou said.