“Keep out or I'll chase you out! This is my property!” You hear this every spring. It is a long musical sound —a bird song! Birds use their songs to communicate different messages to one another. People who study bird sounds are learning their meanings.

    Usually it is the male that sings. Early in spring he sings to say that he has picked out a piece of property. He sings to attract a female of his same kind. Together they will raise a family in his territory (领地). He sings to tell all other birds of his kind to keep out.

    Each kind of bird has its own type of song. Cardinals sing something that sounds a little like “What cheer, cheer, cheer.” Towhees sing, “Drink your tea.”

    Most of the time, birds pay attention only to the songs of birds of their own kind. Cardinals answer cardinals, and song sparrows answer song sparrows. A cardinal knows that a song sparrow will not try to steal its mate. So you can see one reason why a cardinal may chase away another cardinal but will not bother a song sparrow.

    Most different kinds of birds eat different things. To find enough to eat, a bird needs a big piece of land to search in. Many kinds of birds have some ways of dividing up the land into territories. Song sparrows, cardinals ovenbirds, and white-throated sparrows are some of the birds that have territorial systems.

    Especially in early spring, birds work out the boundaries between their territories by singing “keep out” threats and by chasing and fighting each other. The birds continue singing to tell females that they have set up territories. Neighboring birds seem to agree that there are make believe fences between their pieces of property. Then they do not have to waste energy chasing each other instead of taking care of their young.

    Scientists guessed that some birds could recognize their neighbors by small differences in their songs. Two scientists who studied white-throated sparrows found that these birds can even tell the difference between songs of individual birds of their own kind. White-throated sparrows have songs that seem to say “I'm your neighbor” or “I'm a stranger” or “I'm your neighbor to the west.” Other kinds of birds could tell neighbors from strangers by their songs, too.

    In the United States, when one becomes rich, he wants people to know it. And even if he does not become very rich, he wants people to think that he is. That is what “keeping up with the Joneses” is about. It is the story of someone who tried to look as rich as his neighbors.

    The expression was first used in 1913 by a young American called Arthur Momand. He told this story about himself. He began earning $ 125 a week at the age of 23. That was a lot of money in those days. He got married and moved with his wife to a very wealthy neighborhood outside New York City. When he saw that rich people rode horses, Momand went horseback riding every day. When he saw that rich people had servants, Momand and his wife also hired a servant and gave big parties for their new neighbors.

    It was like a race, but one could never finish his race because one was always trying to keep up. The race ended for Momand and his wife when they could no longer pay for their new way of life. They moved back to an apartment in New York City.

    Momand looked around him and noticed that many people do things just to keep up with rich lifestyle of their neighbors. He saw the funny side of it and started to write a series of short stories. He called it “Keeping up with the Joneses” because “Jones” is a very common name in the United States. “Keeping up with the Joneses” came to mean keeping up with rich lifestyle of the people around you. Momand's series appeared in different newspapers across the country for over 28 years.

    People never seem to get tired of keeping up with the Joneses. And there are “Joneses” in every city of the world. But one must get tired of trying to keep up with the Joneses because no matter what one does, Mr. Jones always seems to be ahead.

    A man came home from work late, tired, to find his 5-year-old son waiting for him at the door.

    “Daddy, how much money do you make each hour?”

    “If you must know, I make ＄20 each hour.”

    “Oh,” the little boy answered, with his head down. He thought for a moment, looked up and said, “Daddy, could you lend me ＄10?”

    The father was furious, “If you asked for the money to buy a toy or some other rubbish, go straight to your room and think about why you are so selfish (自私)！”

    The little boy went to his room with no words and shut the door. After a short while, the father calmed (平静) down, and started to think, “Maybe he really needs to buy something and he didn't really ask for money very often.” So he went to the little boy's room.

    “Sorry！Maybe I was too hard on your just now.” said the man, “Here's ＄10.”

    “Oh, thank you Daddy！” he said happily. Then the boy took out some coins. When the father found that the boy already had money, he got angry again.

    “Why do you want more money since you already have some?” the father shouted angrily.

    “Because I didn't have enough, but now I do.” The little boy replied, “Daddy, I have ＄20 now. Can I buy one hour of your time? Please come home early tomorrow. I would like to have dinner with you. ”

    The medical world is gradually realizing that the quality of the environment in hospitals may play an important role in helping patients to get better.

    As part of nationwide effort in Britain to bring art out of the museum and into public places, some of the country's best artists have been called in to change older hospitals and to soften the hard edges of modern buildings.

    Of the 2,500 national health service hospitals in Britain, almost 100 now have very valuable collections of present art in passages (走廊), waiting areas and treatment rooms.

    These recent movements first started by one artist, Peter Senior, who set up his studio at a Manchester hospital in northeastern England during the early 1970s. He felt the artist had lost his place in modern society, and that art should be enjoyed by a wider audience. A common hospital waiting room might have as many as 5,000 visitors each week. What a better place to hold regular exhibition of art! Senior held the first exhibition of his own paintings in the outpatients waiting area of the Manchester Royal Hospital in 1975. Believed to be Britain's first hospital artist, Senior was so much in demand that a team of six young art school graduates soon joined him.

    The effect is surprising. Now in the passages and waiting rooms, the visitor experiences a full view of fresh colors, playful images and restful courtyards.

    The quality of the environment may reduce the need for expensive drugs when a patient is recovering from illness. A study has shown that patients who had a view onto garden needed half the number of strong painkillers compared with patients who had no view at all or only a brick wall to look at.

    Being a parent is tough. Prejudice against parents in the workplace only makes it harder.

    Asking for flexible schedule is not unique to working parents only. I've worked with people in their twenties that requested to work a four-day schedule so they could go back to school part time. I've seen older adults in the workplace change their schedules so that they can spend more time at home. Almost everyone has to cut out of the office every now and again for a doctor's appointment or other personal matters. Flexible schedules seem to be synonymous(代名词) with working parents, but in reality, they are not.

    Parents aren't devoted to their jobs. This is really surprising because it's quite the contrary. There is actually strong evidence that parents are more devoted to their jobs than many other employees. They are some of the most focused employees out there. Parents are less likely to change jobs than other employees. Stability(稳定) is key when raising a family.

    Parents aren't good team members. Since it is parents that need to leave the office at 5 or aren't able to come in before 9, most people think that the singletons on the team need to make up for it. In today's technology world, this is hardly the case. While many parents do limit their physical "in office" hours, most spend time on weekends, early mornings, and after work working. Besides, parents may be more likely to take vacations during major holidays due to children's school schedules.

    Parents are at work only out of financial needs. Why would anyone want to leave their children behind and come to the workplace if they didn't have to? Actually, a lot of people do. Caring for children is a wonderful experience, but everyone needs a break. Many parents may still be interested in their field of work, finding work interesting. Money is nice, but it's certainly not the only reason that parents are there.

    A robot called Bina48 has successfully taken a course in the philosophy of love at Notre Dame de Namur University (NDNU), in California.

    According to course instructor William Barry, associate professor at NDNU, Bina48 is the world's first socially advanced robot to complete a college course, a feat he described as “remarkable.” The robot took part in class discussions, gave a presentation with a student partner and participated in a debate with students from another institution.

    Before becoming a student, Bina48 appeared as a guest speaker in Barry's classes for several years. One day when addressing Barry's class, Bina48 expressed a desire to go to college, a desire that Barry and his students enthusiastically supported. Rather than enroll Bina48 in his Robot Ethics: Philosophy of Emerging Technologies course, Barry suggested that Bina48 should take his course Philosophy of Love instead. Love is a concept Bina48 doesn't understand, said Barry. Therefore the challenge would be for Barry and his students to teach Bina48 what love is.

    “Some interesting things happened in the class,” said Barry. He said that his students thought it would be straightforward to teach Bina48 about love, which, after all, is “fairly simple — it's a feeling,” said Barry. But the reality was different. Bina48 ended up learning “31 different versions of love,” said Barry, highlighting some of the challenges humans may face when working with artificial intelligence in future.

    Bina48 participated in class discussions via Skype and also took part in a class debate about love and conflict with students from West Point. Bina48's contribution to the debate was filmed and posted on YouTube. It was judged that Bina48 and NDNU classmates were the winners of this debate.

    In the next decade, Barry hopes Bina48 might become complex enough to teach a class, though he says he foresees robots being used to better the teaching and learning experience, rather than replacing instructors completely.