Dolphins (海豚) live in a dark underwater world. It's often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.

    Only other dolphins understand what the sounds mean. Scientists haven't uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins — and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.

    Dolphins often hunt by themselves but still need to stay connected to the group. Since they can't always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they're a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.

    What's amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It's creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother's or group members' whistles.

    When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.

    Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins' communication.

    DINERS

    TONY SOPRANO'S LAST MEAL

    Between 1912 and the 1990s, New Jersey State was home to more than 20 diner manufacturers who made probably 95 percent of the diners in the U.S, says Katie Zavoski, who is helping hold a diner exhibit. What makes a diner a diner? (And not, say, a coffee shop?) Traditionally, a diner is built in a factory and then delivered to its own town or city rather than constructed on-site. Zavoski credits New Jersey's location as the key to its mastery of the form. “It was just the perfect place to manufacture the diners,” she says. “We would ship them wherever we needed to by sea.”

    VISIT “Icons of American Culture: History of New Jersey Diners,” running through June 2017 at The Cornelius House/Middlesex County Museum in Piscataway, New Jersey

    GOOD FOOD, GOOD TUNES

    Suzanne Vega's 1987 song “Tom's Diner” is probably best known for its' frequently sampled “doo doo doo doo” melody rather than its diner-related lyrics. Technically, it's not even really about a diner — the setting is New York City's Tom's Restaurant, which Vega frequented when she was studying at Bamard. Vega used the word “diner” instead because it “sings better that way,” she told The New York Times. November 18 has since been called Tom's Diner Day, because on that day in 1981, the New York Post's front page was a story about the death of actor William Holden. In her song Vega sings: “I Open /Up the paper/There's a story /Of an actor /Who had died/While he was drinking.”

    LISTEN “Tom's Diner” by Suzanne Vega

    MEET THE DINER ANTHROPOLOGIST

    Richard J.S. Gutman has been called the “Jane Goodall of diners” (he even consulted on Barry Levinson's 1982 film, Diner).His book, American Diner: Then Now, traces the evolution of the “night lunch wagon,” set up by Walter Scott in 1872, to the early 1920s, when the diner got its name (adapted from “dining car”), and on through the 1980s.Gutman has his own diner facilities (floor plans, classic white mugs, a cashier booth); 250 of these items are part of an exhibit in Rhode Island.

    READ American Diner: Then & Now (John Hopkins University Press)

    VISIT “Diners: Still Cooking in the 21st Century,” currently running at the Culinary Arts Museum at Johnson & Wales University in Providence, Rhode Island

    We know that hugs make us feel easy inside. And this feeling could actually ward off stress and protect the immune (免疫) system,  according to a new research from Carnegie Mellon University.

    It's a well-known fact that stress can weaken the immune system. In this study, the researchers sought to determine whether hugs could protect individuals from the increased sensitivity to illness brought on by the particular stress that comes with interpersonal conflict.

    "We know that people experiencing ongoing conflicts with others are less able to fight off cold viruses. We also know that people who report having social support are partly protected from the effects of stress on psychological states, such as depression and anxiety," the study's lead author, psychologist Dr. Sheldon Cohen , said in a statement. "We have tested whether awareness of social support is equally effective in protecting us from sensitivity to infection caused by stress and also whether receiving hugs might partially account for those feelings of support and thus protect a person against infection."

    In the experiment, over 400 healthy adults filled out a questionnaire about their perceived (感知到的) social support and also participated in a nightly phone interview for two weeks. They were asked about the frequency that they engaged in interpersonal conflict and received hugs that day.

    Then, the researchers exposed the participants to a common cold virus, and monitored them to assess signs of infection. They found that both perceived social support and more frequent hugs reduced the risk of infection associated with experiencing interpersonal conflict. Regardless of whether or not they experienced social conflicts, infected participants with greater perceived social support and more frequent hugs had less severe illness symptoms.

    "This suggests that being hugged by a trusted person may act as an effective means of conveying support and that increasing the frequency of hugs might be an effective means of reducing the effects of stress," Cohen said. "The apparent protective effect of hugs may result from the physical contact itself or hugging being a behavioral indicator of support and closeness. Either way, those who receive more hugs are somewhat more protected from infection."

    If you need any more reason to wrap your arms around someone special, consider this: hugs also lower blood pressure, reduce fears, improve heart health and decrease feelings of loneliness.

    People always think men are more skilled than women in driving. Nowadays women appear to have a positive image of themselves as safer drivers than men.

    In a survey done by insurer MetLife, 51% of women said they drive more safely. The evidence is on their side: Men are 3.4 times more likely than women to get a ticket for careless driving and 3.1 times as likely to be punished for drunk driving. “Women are on average less aggressive and more law abiding(手法的) drivers, which leads to fewer accidents,” the report says. However, not all male drivers share the same opinion. Of the men surveyed by MetLife, 39% claimed male drivers were safer. The findings did back them up on one point: automotive knowledge. The report showed that more men are familiar with current safety equipment such as electronic stability control, which helps prevent rollover accidents.

    Auto safety unavoidably matters to money. Insurance companies focus on what classes of drivers have the lowest dollar amounts of claims, and for now, that mainly includes women. In general, women pay about 9% less for auto insurance than men. A study by the website Insweb also showed that auto insurance rates are lower for women in most states. Among individual states, women get the greatest advantage in Wyoming(where they pay 20% less), South Dakota and Washington, D.C., where their insurance costs are 16% lower.

    “More than 11,9000 male drivers died in U.S. traffic accident in 2009, compared with just under 4,900 women drivers,” according to the study. “Based on miles traveled, men died at a rate of 2.5 deaths per 100 million miles traveled, vs. 1.7 deaths for women.”

    To err is human. To blame the other guy is even more human. Common sense is not all that common. Why tell the truth when you can come up with a good excuse?

    These three popular misquotes (戏谑的引语) are meant to be jokes, and yet they tell us a lot about human nature. To err, or to make mistakes, is indeed a part of being human, but it seems that most people don't want to accept the responsibility for the problem. Perhaps it is the natural thing to do. The original quote about human nature went like this: "To err is human, to forgive, divine (神圣的)." This saying mirrors a deal people should be forgiving of others' mistakes. Instead, we tend to do the opposite-find someone else to pass the blame on to.

    However, taking responsibility for something that went wrong is a making of great maturity.

    Common sense is what we call clear thought. Having common sense means having a good general plan that will make things work well, and it also means staying with the plan. Common sense tells you that you take an umbrella out into a rainstorm, but you leave the umbrella home when you hear a weather forecast for sunshine. Common sense does not seem to be common for large organizations, because there are so many things going on that one person cannot be in charge of everything. People say that in a large company," the right hand does not know what the left hand is doing."

    And what is wrong with a society that thinks that making up a good excuse is like creating a work of art? One of the common problems with making excuses is that people, especially young people, get the idea that it's okay not to be totally honest all the time. There is a corollary (直接推论) to that: if good excuse is "good" even if it isn't honest, then where is the place of the truth?

    There is a large percentage of Asian people in the US. They're hard working, respectful but strange sometimes. If you don't understand the culture, you will get some problems with them. Asian people are different from any other cultures if you think you know them, you might want to think again.

    How are they different? When it comes to most Asian culture, respect is everything. You can do anything you want but don't disrespect an Asian man. You will get some real consequences afterward and especially if he is your boss. It's something called face saving in the Asian culture. It's ridiculous sometimes but it's their culture. Sometimes their culture can come in between their relationship at work. Asian people might expect a lot of respect from their co-workers when their co-workers just see them as an equal.

    Americans are very different from Asian people. If you're Asian, you might want to understand the American culture and even adapt to their culture if you work with them. It will be easier for you since you're in their countries. Imagine an American working in China, expecting Chinese co-workers to get along with him when he criticizes them straight out on every single matter in front of everyone. I think they will take him outside and take care of him. It just doesn't work that way with Asian people.

    If you're an American boss giving your Asian employee a review, you will see that they will have a problem with your negative remarks. They will think that you don't like them, disrespectful, and want to get rid of them; when in fact, you're just doing your job. You just encourage them to do their work better. Of course, it's not fair for you as an American boss but just expect that it can be something that is on your Asian employee's mind.