Mail lay scattered across the kitchen table. I couldn't put off sorting through it any longer. I checked the envelopes, putting aside the ones addressed to my husband.

    It had been over three years since Bob had died. To friends and family it looked like I had moved past the worst of my sorrow. I took care of my house, socialized and kept up with community. On the outside everything appeared to be normal. But inside I was anything but I worried I would never get better, never be myself again. They say sorrow has no set time limit, but I was so tired of feeling empty and hopeless. My sorrow was sharp and fresh as ever. It was like a wall of pressure in my chest, pressing my heart.

    I picked up a piece of Bob's mail and held it out to tear in half, but stopped myself from cutting up the envelope. The letter was from an organization that funded a Haitian orphanage called My Father's House. Its founder, Carol Hawthorne, had given a presentation at our church. Bob and I had donated, and Bob ended up on the mailing list to receive the newsletter (通讯) with updates on the children.

    I hadn't read one since Bob died. But just three months before, in January 2012, the country had been hit by a terrible earthquake. In my depressed state, it hadn't even occurred to me to wonder whether the orphanage had survived. I opened the newsletter and was surprised to find out that My Father's House was still standing. Of course now it was more crowded than ever. At the bottom of the page was an announcement about an upcoming trip to visit the orphanage in person. “I should go.” The thought wouldn't leave me. I contacted Carol Hawthorne.“What would I do if I go?” I asked.“Build houses?”

    “The Haitian people there are eager to work and they know what they're doing,” said Carol. “What they need are raw materials, and we provide them. We also visit with the children. We go to clinics and schools, pass out supplies. You'll be very busy, I promise!” I reserved a seat but didn't mention it to any of my friends. Just a few weeks later, I was at the airport with seven strangers, waiting to board a plane to Haiti. Even after takeoff I wasn't really sure of what I was doing.

    In Haiti we were met by Pastor Ronald Lefranc, the director of My Father's House. We piled into an old school bus and drove over uneven roads full of stones and mud. We passed women shaking under the weight of huge water buckets balanced on their heads. Piles of rubbish scattered across the landscape, and the land was covered with broken tents. Finally we pulled up to the orphanage. A crowd of children—52 in all—rushed up to greet us. I couldn't understand the words of the song they sang in Creole, but with the smiles on their faces I didn't need to. Each child planted a big kiss on my cheek.

    Carol and Pastor Ronald led us into the main building. “What are those over there?” I asked, pointing to a collection of thin tents. “Is there not enough room in the building for all the children?”

    “We have the room,” said Pastor Ronald. “But many of these children came here after the earthquake. They still don't feel safe sleeping under a roof.”

    There was no sign of fear in the playroom inside. I played dolls and other games. Children I'd just met presented me with pictures they'd drawn and letters written in Creole. In the evening the children gathered in the dining room. They took turns reading aloud and then they all joined in song. The words were strange, but the tune sounded familiar.

    They'd lost so much, yet were so joyful. In the evening the children gathered in the dining room. One of the older children stood up to speak and then they all joined in song. The words were strange, but the tune sounded familiar. The children settled down. In the silence, a quiet noise began.

    The English language has a lot of words which can be used in many different ways and in many different expressions.

    One such example is the word matter. In fact, matter can mean just about anything. It could be one of the most useful words in the English language.

    Let's get to the heart of the matter —a matter of principle(原则).

    If someone says that you owe(欠) him $50, but you don't, a friend might say, “Well, you could pay him the $50. It's not that much money. Then you won't have to hear him say it anymore. But if you do not owe him the money, do not pay him the money. It's a matter of principle.

    There is another way to use the word matter. But be careful with your choice of words.

    If you ask someone, “What's the matter?”, it shows you are worried about the other person. But saying, “What's the matter with you?” has a completely different meaning. And it usually sounds rude (粗鲁的). In fact, when you say, “What's the matter with you?” you are suggesting that the person did something wrong or stupid.

    Another expression that could sound rude is to say, “It doesn't matter to me.” Here, it depends on the context, and how you say it.

    Let's say you tell someone that a friend just got a big raise at work. That person answers with, “It doesn't matter to me.” Here, it means he or she does not care. And it sounds rude.

    But saying, “Oh, you pick where we eat dinner. It doesn't matter to me.” does not sound rude. In this situation, “it doesn't matter” shows you are easy-going(随和的).

    No matter how you look at it and what you say, matter is a very useful word. And it's only a matter of time before you will become an expert on the use of matter.

    Every pet owner loves his pet. There is no argument here.

    But when we asked our readers whether they would clone their beloved animals, the responses were split almost down the middle. Of the 228 readers who answered it, 108 would lone, 111 would not and nine weighed each side without offering an opinion.

    Clearly, from readers' response, this is an issue that reaches deeply into both the joy and eventual sadness of owning a pet. It speaks, as well, to people's widely differing expectations over the developing scientific procedure.

    Most of the respondents who favored the idea strongly believed it would produce at least a close copy of the original; many felt the process would actually return an exact copy. Those on the other side, however, held little hope a clone could never truly recreate a pet, many simply didn't wish to go against the natural law of life and death.

    Both sides expressed equal love for their animals. More than a few respondents owned “the t dog/cat in the World”. They thought of their pets as their “best friend”, ''a member of the family,” “the light of my life.” They told moving stories of pets' heroism, intelligence and selfless devotion.

Little wonders the loss is so disturbing—and the cloning so attractive. “People become very lose to their animals, and the loss can be just as hard to bear as when a friend or family member dies,” says Gary Kowalski, author of Goodbye, Friend: Healing Wisdom for Anyone Who Has Ever Lost a Pet. “For me, cloning feels like an attempt to turn death away... It's understandable. Death is always painful. It's difficult to deal with. It's hard to accept.”

    But would cloning reduce the blow? This question seemed to be at the heart of this problem.

    Throughout my educational years, despite the kind teachers I had met, I never felt interest in writing until I met her, Mrs Kelley. At first, I believed that writing would still be my worst class. Gradually, my fondness increased. She taught the lesson in such a lively way and her word choice impressed me. But that was not what made her my favorite. Unlike other teachers, after instructions, she gave an enormous amount of freedom in what we wrote, allowing us to create our own stories using our imagination. And that mattered most.

    There was one really revolutionary event: the historical fiction unit. We were to invent out own stories using the period we were given. World War II was mine. At that point, I was just looking for a good grade. Rather than creating a mundane (平淡的) story, I wanted to make a story that I felt was meaningful. As I progressed, I was pulled further and further into the reality that I had made. Grammar no longer existed, as my hands gained acceleration. When I typed the final word, my hands trembled with excitement. Briefly, I read it over and then submitted the draft.

    In the midst of anxiousness, Mrs Kelley responded. She pointed out some mistakes and gave some suggestions. Sadly, there were no comments of recognition. I fixed the errors and moved on. But when waiting for the final grade, I erased all the unrealistic thoughts that wandered in my mind.

    In the next class, surprisingly, after handing back my paper, Mrs Kelley mentioned that my story was very good. I looked at her in confusion. Soon excitement stirred inside me. I found a “+5” attached to the score. She had given an extra point in "Plot", adding an "Excellent!" No other teacher had done this. On that day, I felt what it means to be a writer. Mrs Kelley introduced me to the beauty of literature and made writing so enjoyable.

When your boss calls and tells you to send $100,000 to a supplier, be on your toes. It could be a fake call. As if fake emails weren't enough, on the rise now is the deep fake audio (虚假音频) that can be cloned to sound almost real and perfect and is easy to create. "It's on the rise, and something to watch out for," says Vijay Balasubramaniyan, the CEO of a company called Pindrop.

Balasubramaniyan stated during a safety meeting how easy it is to use machine to create sentences that a person probably never said from recorded words. "All you need is five minutes of audio, and you can create fake audio," says Balasubramaniyan. Then, he showed a database (数据库) of voices, typed a sentence, and connected it to a famous people's name on the list. A few seconds later, he clicked "play", and it sounded quite real.

More costly are fake phone calls, where cheaters are able to fake the phone number of real contacts and make calls that result in workers sending off lots of money. He mentioned the example of a United Kingdom energy company in 2019 that got attacked by deep fake audio in a call that asked a worker to send $243,000 to a supplier. Reported by the Wall Street Journal, the worker was directed to pay it within an hour.

Balasubramaniyan says if you were to get that kind of call from a "boss" be doubtful and ask to call back right away to prove authenticity (真实性). Besides this, in his opinion, companies need to use more safety measures for keeping up with deep fake artificial intelligence (AI) that produces phone calls and software to check authenticity versus fake calls. "This is a threat that's waiting to happen," he says. "It's a very small number now, but it's very real."

Once a blind man fell flat on his face, which was awful but finally harmless. His service dog, however, was trained lo tum to an adult if the owner had an epileptic seizure (癫瘤发作). While the dog did what it was taught, the first person it found was merely annoyed but not alarmed. Thankfully, the dog's owner was not in the situation of medical emergency. But the experience inspired him to share this information on social media, "If a service dog without a person approaches you, it means the person is down and in need of help," the owner explained. "Don't get scared, don't get annoyed, and follow the dog! If the first person doesn't cooperate, it moves on.

Referring to the accident, a TV presenter asked a dog trainer, Olivia, some basic questions about service dogs, including how humans should react if an unaccompanied service dog approaches them.

"What they're going to do is sniff and gently push your leg," the trainer explained, specifically noting that service dogs are not usually trained to jump or bark. "If you see a dog in a vest without a person around it, follow it." When asked if one should say something to indicate they're prepared to follow the dog, Olivia said," there's no clear command. Just start walking wherever the dog leads."

Olivia concluded the TV show by adding that those who rely on service dogs could train their companions to move along to someone else, if the first person the dog came upon reacted negatively to its request. Doing so could finally save the owner's life.