A handsome middle-aged man walked quietly into the cafe and sat down. Before he ordered, he couldn't help but noticed a group of younger men at the table next to him. It was obvious they were making fun of something about him and it wasn't until he remembered he was wearing a small pink ribbon (丝带) on the lapel (翻领) of his suit that he became aware of what the joke was all about.

    The man pretended not to notice it, but the whisper and laughter began to get to him. He looked one of the rude young men straight into the eye, placed his hand beneath (在…下方) the ribbon and asked, “This?”

    With that the young men all began to laugh out loud. The man he spoke to said, “Hey, sorry, man, but we were just commenting on how pretty your little pink ribbon looks against your blue jacket!”

The middle-aged man calmly invited the joker to come over to his table, and politely seated him. As uncomfortable as he was, the young guy had to, not really sure why. In a soft voice, the middle-aged man said, “I wear this ribbon to bring awareness about breast cancer. I wear it in my mother's honor.”

     “Oh, sorry. She died of breast cancer?”

“No, she didn't. She's alive and well. But her breasts nourished (抚养，滋养) me as a baby, and were a soft resting place for my head when I was scared or lonely as a little boy. I'm very grateful for my mother's breasts, and her health.”

     “Umm,” the young replied, “yeah.”

     “And I wear this ribbon to honor my wife,” the man continued.

“And she's okay, too?” the young guy asked.

“Oh, yes. She's fine. Her breasts have been a great source of loving pleasure for both of us, and with them she nurtured (养育，培育) and nourished our daughter 23 years ago. I'm grateful for my wife's breasts, and her health.”

     “Uh, huh. And I guess you wear it to honor your daughter, also?”

“No. It's too late to honor my daughter by wearing it now……”

Shaken and ashamed, the young guy said, “Oh, I'm so sorry, mister.”

“So, in my daughter's memory, too, I proudly wear this little ribbon, which allows mo the opportunity to enlighten (启发，教导) others. And here…” With this, he reached in his pocket and handed the young roan a little pink ribbon. The young guy looked at it, slowly raised his head and asked, “……?”

    I was just in France to visit my grandmother who is very dear to me. I don't get to cross the Atlantic very often, and she's now 96 years old, so every time I visit her, the two of us are very aware that it might be the last time we see each other.

    Last year, I did a series of short video interviews about her life. I asked her what it was like growing up with her father in the 1910s, and living alone with two young children. I asked her about her greatest memories, and her favorite books, foods, etc. I learned a lot of amazing new things about her I had never known before. These were very intimate conversations, which made me know her better.

    This year, I did not really have questions and I only had a great desire to make her know how much I loved her. I cooked for her and read her stories. I gave her a foot massage (按摩), which was her first ever! Before leaving, I was looking for a way to leave something meaningful behind besides the memory of our time together. Therefore, I wrote her five different love notes, and hid them in different places where I knew she would eventually find them.

    I left really joyously knowing that these cards would surely cheer her up after I left. She called me as I was travelling back to Paris to catch my plane back to the US and said, “I found your cards! By the time I discovered the last one, I was laughing out loud! Thank you so much, my sweetheart!” I smiled to myself, knowing she still had two more to go! It was Sunday, so my guess was that she had not checked her mailbox and had not yet driven her car!

    According to a new US study, couples who expect their children to help care for them in old age should hope they have daughters because they are likely to be twice as attentive overall.

    The research by Angelina Grigoryeva, a sociologist at Princeton University, found that, while women provide as much care for their elderly parents as they can manage, men do as little as they can get away with and often leave it to female family members.Her analysis of the family networks of 26,000 older Americans concluded that gender(性别) is the most important predictor(预示物) of whether or not people will actively care for elderly parents.

    In a paper being presented at the annual conference of the American Sociological Association in San Francisco, she concludes that simply having a sister makes men statistically likely provide less care.

    Using data from the University of Michigan Health and Retirement Study, a study which has been tracking a cross-section of over-50s for the last decade, she calculated that women provide an average of 12.3 hours a month of care for elderly parents while men offer only 5.6 hours.

    “Whereas the amount of elderly parent care daughters provide is associated with limitations they face, such as employment or childcare, sons' caregiving is associated only with the presence or absence of other helpers, such as sisters or a parent's spouse(配偶),” she explained.

    “Sons reduce their relative caregiving efforts when they have a sister, while daughters increase theirs when they have a brother.”

    “This suggests that sons pass on parent caregiving responsibilities to their sisters.”

    In the UK, the 2011 census(人口普查) showed that there are now around 6.5 million people with caring responsibilities – a figure which has risen by a tenth in a decade.

    But many are doing so at the risk of their own health. The census showed that those who provide 50 hours or more of care a week while trying to hold down a full- time job are three times more likely to be struggling with ill health than their working counterparts(相对应的人) who are not carers.

    For some people, music is no fun at all. About four percent of the population is what scientists call "amusic." People who are amusic are born without the ability to appreciate music or recognize musical notes (音调). Amusic people often cannot tell the difference between two-songs. Amusics can only hear the difference between two notes if they are far apart on the musical scale.

    As a result, songs sound like noise to an amusic. Many amusics compare the sound of music to pieces of metal hitting each other. Life can be hard for amusics. Their ability to enjoy music sets them apart from others. It can be difficult for other people to identify with their condition. In fact, most people cannot begin to understand what it feels like to be amusic. Just going to a restaurant or a shopping mall can be uncomfortable or even painful. That is why many amusics intentionally stay away from places where there is music. However, this can result in withdrawal and social isolation. "I used to hate parties," says Margaret, a seventy-year-old woman who only recently discovered that she was amusic. By studying people like Margaret, scientists are finally learning how to identify this unusual condition.

    Scientists say that the brains of amusics are different from the brains of people who can appreciate music. The difference is complicated, and it doesn't involve defective hearing. Amusics can understand other nonmusical sounds well. They also have no problems understanding ordinary speech. Scientists compare amusics to people who just can't sec certain colors.

    Many amusics are happy when their condition is finally diagnosed (诊断). For years, Margaret felt embarrassed about her problem with music. Now she knows that she is not alone. There is a name for her condition. That makes it easier for her to explain. "When people invite me to a concert, I just say, 'No thanks. I'm amusic,'" says Margaret. "I just wish I had learned to say that when I was seventeen and not seventy."

When I teach research methods, a major focus is peer review. As a process, peer review evaluates academic papers for their quality, integrity and impact on a field, largely shaping what scientists accept as "knowledge"- By instinct, any academic follows up a new idea with the question, "Was that peer reviewed?"

Although I believe in the importance of peer review and I help do peer reviews for several academic journals-I know how vulnerable the process can be. 

I had my first encounter with peer review during my first year as a Ph. D student. One day, my adviser handed me an essay and told me to have my -written review back to him in a week. But at the time, I certainly was not a "peer"--I was too new in my field. Manipulated data （不实的数据） or substandard methods could easily have gone undetected. Knowledge is not self-evident. Only experts would be able to notice them, and even then, experts do not always agree on what they notice. 

Let's say in my life I only see white swans. Maybe I write an essay, concluding that all swans are white. And a "peer" says, "Wait a minute, I've seen black swans. "I would have to refine my knowledge. 

The peer plays a key role evaluating observations with the overall goal of advancing knowledge. For example, if the above story were reversed, and peer reviewers who all believed that all swans were white came across the first study observing a black swan, the study would receive a lot of attention. 

So why was a first-year graduate student getting to stand in for an expert? Why would my review count the same as an expert's review? One answer: The process relies almost entirely on unpaid labor. 

Despite the fact that peers are professionals, peer review is not a profession. As a result, the same over-worked scholars often receive masses of the peer review requests. Besides the labor inequity, a small pool of experts can lead to a narrowed process of what is publishable or what counts as knowledge, directly threatening diversity of perspectives and scholars. Without a large enough reviewer pool, the process can easily fall victim to biases, arising from a small community recognizing each other's work and compromising conflicts of interest. 

Despite these challenges. I still tell my students that peer review offers the best method for evaluating studies aird advancing knowledge. As a process, peer review theoretically works. The question is whether the issues with peer review can be addressed by professionalizing the field. 

Physicist and Nobel Prize winner Richard Feynman developed a clever learning method known as the Feynman Technique. It involves explaining what you're learning to others. By teaching what you've learned from memory, you engage in active recall.  {#blank#}1{#/blank#} It also ensures that you understand the topic, because you can explain an idea if you truly understand it. The technique consists of four repeatable steps.

To begin, choose a concept or a topic you wish to fully understand. {#blank#}2{#/blank#} The more interested you are, the faster you'll grasp it. Moreover, a personally interesting topic will keep you motivated and engaged.

{#blank#}3{#/blank#}  Write notes and explain it in a way that makes sense to a five-year-old. If you'd rather avoid actually teaching someone, you can just teach it to an imaginary audience. But it works much better if you use a real person. They'll be able to let you know when something isn't clear.

While teaching, you may discover gap s in your understanding. {#blank#}4{#/blank#}  Review your notes, reread books, or seek external help to ensure you have a complete understanding of the context before moving forward.

Now that you fully grasp the concept, test your understanding by trying to teach it to another person. This will help you identify any remaining areas of uncertainty you need to revisit.

The Feynman Technique is a great way for kids and grown-ups to learn.  {#blank#}5{#/blank#} You need to actively think about the problem instead of passively reading or listening to someone else. However, with great efforts in mastering this method, you'll see your learning results improve quicker than ever before.

A. It is mentally demanding.

B. This helps the information stick in your mind better.

C. Teach it to a five-year-old, who would give you direct feedback.

D. Your curiosity about it will determine the pace of your learning.

E. Once you have chosen a topic, you can teach it to someone else.

F. Active engagement plays a key role in promoting deeper learning.

G. When this happens, refer back to the original material for the missing pieces.