“This way, everyone.” said the young Bahamian as he led the way to the boat. As the boat moved over the waves, I thought back eleven years to my first island visit via a cruise ship. As we landed, I noticed a sign advertising swimming with dolphins. I looked at my mother; she knew exactly what I wanted, but I was too young. “Maybe some other time,” she said. I think everyone knows that those four words usually translate to never. It made me, a little boy, depressed for many days. From that day on, it was my dream to swim with those gentle creatures.

    Now, after 15 minutes of travelling, we reached the Sanctuary Bay. As we arrived, I saw the gray creatures showing off their unique talent before my eyes. We were led off the boat, past a back building. Our guide told us we would have the pleasure of spending the next 90 minutes with Kaholo, a young male, and Robola, the largest female, who is quite famous for having played the lead in the film Zeus and Roxanne.

    My father and I were joined by four others and followed the man once more. He told us to jump into the water while he let the dolphins into that part of the bay. For the first 20 minutes, we could go anywhere and touch the dolphins as they swam by.

    Kaholo and Robola must have known I was their biggest fan because they swam towards me as if I had had fish. After the introductory period, they jumped over our heads. I got a hug and kiss from Robola, and also learned how to have Kaholo talk to me.

    This was by far the most magical experience of my life. Next time your parents say “Maybe some other day”, have faith in them. Your dreams are important to them too, and they will do whatever they can to make it possible, because dreams can come true.

    A few weeks ago, I called an Uber to take me to the Boston airport for a flight home for the holidays. As I slid into the back seat of the car, the warm intonations（语调）of the driver's accent washed over me in a familiar way.

    I learned that he was a recent West African immigrant with a few young children, working hard to provide for his family. I could relate: I am the daughter of two Ethiopian immigrants who made their share of sacrifices to ensure my success. I told him I was on a college break and headed home to visit my parents. That's how he found out I go to Harvard. An approving eye glinted at me in the rearview window, and quickly, we crossed the boundaries of rider and driver. I became his daughter, all grown up — the product of his sacrifice.

And then came the fateful question: "What do you study?" I answered "history and literature" and the pride in his voice faded, as I knew it might. I didn't even get to add "and African-American studies" before he cut in, his voice thick with disappointment, "All that work to get into Harvard, and you study history?"

    Here I was, his daughter, squandering the biggest opportunity of her life. He went on to deliver the age-old lecture that all immigrant kids know. We are to become doctors (or lawyers, if our parents are being generous) — to make money and send money back home. The unspoken demand, made across generations, which my Uber driver laid out plainly, is simple: Fulfill your role in the narrative（故事）of upward mobility so your children can do the same.

I used to feel anxious and backed into a corner by the questioning, but now as a junior in college, I'm grateful for their support more than anything. This holiday season, I've promised myself I won't huff and get annoyed at their inquiries. I won't defensively respond with "but I plan to go to law school!" when I get unrequested advice. I'll just smile and nod, and enjoy the warmth of the occasion.

    Many young people these days adore the advertised magazine body and become too focused on attaining this image instead of worrying more about what lasts and even grows over time. But could you imagine being considered beautiful for years, and suddenly being ugly after moving to another continent? It is a sad reality that people don't realize how vacillating the idea of beauty can be from one country to another.

    Think of the most typical American girl you know. Is she blonde-haired with white skin and light blue eyes, and does she love shopping or sports? Now place this girl in the heart of Africa, where beauty is placed on what you can control. The Maasai tribe in Kenya focuses on how clean people are, and how stylish their piercings (穿孔) are. This tribe's culture is to be a brave fighter, so they will cut their skin with patterns in it to show that they are strong. If you don't look fierce, you are not beautiful.

    Other countries like North Korea and South Korea have their own unique views on beauty. In an interview, a woman who has lived in both North Korea and South Korea claims that beauty in North Korea is based more on your ability to be a good woman and wife. She says that women in North Korea are less concerned about fashion and beauty in the physical sense. She says they did have a time when big eyes were a big deal and everyone wanted to get double eyelid surgery. This is something extreme and could perhaps be influenced by Western culture. But don't you think the idea of getting surgery done to look more attractive is crazy?

    Three years ago I worked for a few weeks as a doctor in a new dental clinic(牙科诊所）at Victor Harbor to the south of Adelaide and an hour further away than my usual workplace. My first day there was a driving to a new clinic and getting used to the clinical environment.

    As it was all new to me, I took off my rings: my wedding ring, and one that was an anniversary(周年纪念日)gift from my husband. I put them in a tissue(纸巾)and placed them beside my computer. During my lunch break, I noticed the tissue and thought that it did not look very clean and threw it into the rubbish bin. I went about my work and my day went well; I met new patients and felt that I had been productive

    Driving home at the end of the day, just moments before I reach that were missing. I felt the heat in my body rise, my cheeks(脸颊)burning red. I felt sick to my stomach.

    I spat an hour or so making calls, trying to find my rings. The first people I called were and clinical leader and they gave me a few phone numbers for cleaners I got in touch with already who managed the leaning services for the clinic, and she told me that the bins had already been collected.

    I knew nothing could be done now. I had lost my rings. Bu after two or so hours, I received the most amazing phone cal. The cleaner had gone through the bins and found my rings! I was so thankful to her, someone who had taken the trouble to go through the bins-which is not a pleasant task-to find my priceless rings.

    I worked at that clinic the following day, so I bought chocolates to thank this wonderful person. Unfortunately I did not get to meet her as she was not at work that day.

    Charles Dickens' joy at first arriving in Boston Harbor in 1842 reads like Ebenezer Scrooge's awakening on Christmas morning. Biographer Peter Ackroyd reports that he flew up the steps of the Tremont House Hotel, sprang into the hall and greeted a curious crowd with a bright "Here we are!" He took to the streets that twinkling midnight in his shaggy fur coat, shouting out the names on shop signs, pulling bell-handles of doors as he passed—excited with laughter—and even screamed with (one imagines) astonishment and delight at the sight of the old South Church. He had set at last upon the shores of "the Republic of my imagination."

    Though not quite 30, Dickens was a literary rock star, the most famous writer in the world, who landed like a conquering hero in a country swept up in an extreme "Boz-o-mania". He wrote to his best friend, John Forster, that he didn't know how to describe "the crowds that pour in and out the whole day; of the people that line the streets when I went out; of the cheering when I went to the theatre; letters of congratulations, welcomes of all kinds, balls, dinners, assemblies without end." When Bostonians renamed their city "Boz-town", New Yorkers determined to "outdollar…and outshine them". Their great Boz Ball boasted flags, flowers, a huge portrait of the author with a bald eagle overhead, 22 tableaux (场景) from the great author's works. "If I should live to grow old," Dickens said, "the scenes of this and other evenings will shine as brightly to my dull eyes 50 years hence as now." ①

    The Spirit of the Times wrote of it: "This most extraordinary, fashionable, brilliant, unique, eye-dazzling, heart-delighting, superb, foolish and ridiculous celebration…came off at the Park Theatre, New York, on Monday evening." But, the reporter predicted, "Such were silly-minded Americans, and such the ridiculous respect paid to a foreigner, who will probably return home and write a book abusing the whole nation for the excesses of a few fools." ②

    In fact, Dickens wrote two.

    ③ Apart from the country's great writers, he found Americans ill-mannered and invading his privacy. "I am so surrounded by people that I am exhausted from want of air." Dickens complained to Forster. "I go to church for quiet, and there is a violent rush to the neighborhood of the bench I sit in. I take my seat in a railroad car, and the very conductor won't leave me alone. I can't drink a glass of water without having a hundred people looking down my throat."

    ④ He disliked Americans' table manners and the tobacco spit everywhere he looked—on even the sidewalks of the nation's capital, where he found party politics corrupting everything, its leaders "the lice (虱子) of God's creation," and "despicable (卑鄙的) trickery at elections."

    Even worse, everyone wanted a piece of the action, from Tiffany's selling unauthorized copies of his bust (半身像) , to a barber selling locks of his hair. "I never knew what it was to feel disgust and contempt (蔑视)," Dickens said, "till I traveled in America." When he departed in June, he left behind all notions of an Arcadian realm he now regarded as "a vast counting house" full of nothing but "cheaters and bores." (See: A Christmas Carol.)

    Americans had soured on him, too. Dickens never missed an opportunity to accuse American publishers of openly pirating his novels to sell for mere pennies, with no recompense to the author at all. The press took offense. Within a month of his arrival, Dickens were laughed at for his "foppish" clothing and effeminate hair, described as "no gentleman," "a contemptible Cockney (伦敦佬)."

    Breathing dirty air comes at a high price. Air pollution lowers the average life spans (寿命) by a year worldwide and in more polluted parts of Asia and Africa, dirty air shortens lives up to twice that much. Scientists shared their new findings in Environmental Science & Technology Letters. The study used data gathered in 2016 as part of a project known as the Global Burden of Disease and was the first major country-by-country look at the connection between the length of life and what's known as fine PM.

    Air pollution has been linked to many health problems. Most earlier studies had looked at how tiny air pollutants affected rates of illness or death. Joshua Apte is an environmental scientist at the University of Texas at Austin. By looking at life expectancy (预期寿命), his team had hoped to make the threat easier to understand. PM2.5 is what scientists call tiny particles (颗粒) of pollution in the air. Higher levels of PM2.5 can cause health problems and cut months, if not years, from the average length of life. This analysis shows how pollution affects life expectancy in different parts of the world.

    The World Health Organization (WHO) recommends limiting PM2.5 to 10 micrograms per cubic meter of air. Apte's group calculated how holding pollution to this low level would help people. In countries with very dirty air, meeting this standard would lengthen people's lives. However, in countries whose air already meets this standard, the study shows no gain in life expectancy. In other words, meeting the WHO standard won't reduce health costs resulting from dirty air because even below 10 micrograms per cubic meter, pollution still causes serious risks. Meanwhile, the scientists compared how other threats including smoking and cancer shorten the length of life across the globe.