Scientists are debating how to limit their newly-discovered power to change genetic structure (结构). Scientists already modify the genes (基因) of farm animals and agricultural plants to make them more productive or stronger. But now they can also change genes in wild animals and plants. These genes would continue into later generations. For example, it may be possible for scientists to remove from existence the kind of mosquitoes, small flying insects, that carry the Zika virus. They might also be able to permanently remove species (物种) of plants and animals that are damaging to other species.

    In a report published last week, the U. S. National Academies of Sciences, Engineering and Medicine (NAS) said it supports continued research on this kind of gene control. But it warned that it is not possible to know what will happen when these changed plants and animals are released (释放) into the wild.

    Sixteen biologists, ethicists (伦理学家) and policymakers are on an NAS committee that is examining the issue. They say that there is value to the new technology. But, they say, there is not enough evidence to support the release of modified organisms (生物体) from the laboratory into nature.

    Many people would support stopping mosquitoes and rats from carrying diseases. But scientists say we must understand the possible scientific, ethical, legal and social results of such action before we decide whether to take it. Gene modification is spread through reproduction (繁殖).

    Changed genes will continue to spread as long as an animal or plant continues to reproduce. They cannot be limited to a farm or kept within a country's borders. Scientists are wondering what may happen if a modified organism mates with another species. They are not yet sure how the modified genes would affect the other species. It is possible that those genes could harm those creatures or even lead to their disappearance from our planet.

    A few years ago, I took a sightseeing trip to Washington, DC. I saw many of our nation's treasures, and I also saw a lot of citizens on the street—unfortunate ones, like beggars and homeless folks.

    Standing outside the Ronald Reagan Center, I heard a voice ask. “Can you help me?” When I turned around, I saw an old blind woman with her hand extended. In a natural reflex (自然反射), I reached into my pocket, pulled out all of my loose change and placed it in her hand without even looking at her. I hated being disturbed by a beggar.

But the blind woman smiled and said: “I don't want your money. I just need help finding the post office.” In an instant, I realized what I had done. I had acted with prejudice (偏见)—I had judged another person simply for what I thought she had to be.

    I hated what I saw in myself. This incident brought back my central belief. It reminded me that I believed in being humble (卑下的), even though I'd lost that belief for a moment.

    The thing I had forgotten about myself is that I am an immigrant (移民). I left Honduras and arrived in the US at the age of 15. I started my new life with two suitcases, my brother, my sister and a strong mother. Through the years, I have been a dish washer, roofer, mechanic, cashier and pizza delivery driver, among many other humble jobs. Eventually, I became a network engineer.

In my own life, I have experienced many acts of prejudice. I remember a time at age 17—I was busboy (餐馆工), and I heard a father tell his little boy that if he did not do well in school, he would end up like me. I have also seen the same treatment of family and friends, so I know what it's like, and I should have known better.

    But now, living my American middle-class lifestyle, it is too easy to forget my past, to forget who I am and where I have been, and to lose sight of where I want to go. The blind woman cured me of my blindness. She reminded me of my belief in being humble, and to always keep my eyes and heart open.

    By the way, I helped that lady to the post office. And in writing this essay, I hope to thank her for the priceless lesson she gave me.

    “Do you have any idea how hard it is to be a kid?!” My 7-year-old once asked me. My initial reaction to her complaint (抱怨) was eye-rolling, along with thinking, “Being a kid is hard? Are you kidding me?” as I mentally counted all the hard things that her grown-up mama did.

    However, as I thought about it a bit more, I realized how silly my reaction had been. Yes, as we adults look back on our childhood, being a kid seems carefree and easy and full of fun. Coloring at school! Playing games! Riding bikes! How could that be hard? So I asked my daughter why being a kid was so hard.

    “Well, because you don't have your own phone, and you can't eat in the living room,” she said.

     I asked if anything else was hard about being a kid. “Someone else is the boss of you,” she replied.

    I thought some more. What else is hard about being a kid? Well, sometimes, we don't really take kids seriously.

    There are times when I've responded to my children's tears with “It's not bad,” or “You don't need to be upset about that.” Because I believe that a cancelled playdate or a lost toy is no big deal. But for my little ones, it is.

    We don't intentionally ignore these opportunities for connection, but sometimes, in busy moments of parenting, we respond unskillfully. We don't put ourselves in our children's shoes, and we miss an opportunity to practice compassion.

    Compassion means “to feel with” or “to suffer with” another person. It means seeing something the way they do, and experiencing it with them.

    Here's what I've learned about being a more compassionate parent, and I hope other parents can do the same thing.

    Disney World is a very popular attraction. But going there can be costly. Here are some suggestions that can help you save money.

    Instead of eating at the park, get premade food from a nearby grocery store or even make your own lunch. Also, make sure to take your own water with you because spending $3 on water will make your stomach hurt. Another idea is to pack snacks or quick and cheap pick-me-ups as you make your way around the park.

    Of course you're going to want to take some Disney souvenirs home with you, but you'll quickly realize that it comes with a price. Before buying anything, make sure you have a plan. Some suggestions for keeping costs down include picking your own pearl at the Japan store at Epcot, which is all about the experience and only $15.95 plus tax, or even getting special tradable collection pin that you can trade with Disney cast members or other guests.

    When you go to Disney World on rainy days, you may catch a lot of showers. But you don't have to. Go to a local Dollar Tree and buy disposable ponchos（一次性雨披）for $1. The ponchos at Disney are probably more durable（耐用的）, but they cost $9. For a family of five, the Disney ponchos would cost $45 versus spending $5 at the dollar store.

    It costs $17 to park in Disney for a day. Luckily, most non-Disney resorts offer free shuttles（来往的班车）to and from the park and all Disney resorts offer free transportation for guests as well. If you like to be on your own schedule without worrying about when the shuttle comes, then parking is your only choice. But waiting for the shuttle and going by a schedule isn't really difficult, either.

    Being mistreated at work can out their negative emotions on loved ones at home. But a new study suggests that getting more exercise and sleep may help people better pope with them by, leaving them at work where they belong.

    Previous research shows that employees who are looked down on or insulted by colleagues are likely, go express their frustrations and behave angrily toward people outside of work, says study co-author Shannon Taylor, a management professor at the University of Central Florida's College of Business.

    The new study backs up this idea, but offers a bit of good news as well: Employees who averaged more than 10.500, steps a day or burned at least 2, 100 calories were less likely to mistreat their cohabitants than those who averaged fewer steps of burned fewer calories.

    The findings also revealed that when employees felt they had a bad night's sleep because of work issues, they, were more likely to be grouchy at home. “When you're tired, you're either less able or less motivated to regulate yourself” says co-author Larissa Barber, a professor of psychology at Northern Illinois University.

    Physical activity seems to counterbalance poor sleepy, Barber says, because it promotes healthy brain functions needed to properly regulate emotions and behaviors. “This study suggests that high amounts of exercise can be at least one way to improve the situations brought by sleep troubles that lead to negative behaviors at home,” she says.

    Barber acknowledges that finding time to work out and get a full night's sleep can be difficult when work pressure is mounting, and that often, job stress can be directly related to sleep quality. But, she says, making the effort to burn some extra calories and blow off some steam can be worth it. It's not only good for you, says Taylor,/ but it can benefit the people you live with as well.

Dear Alcohol,

    You've been around forever. I can remember all the pain you've caused for me.

    Do you remember the night you almost took my father's life? I do. He loves you. Sometimes I think he loves you more than he loves me. He's addicted to you, to the way you promise to rid him of his problems only to cause more of them. You just sat back and laughed as his car went spinning through the street, crashing into two other cars. He wasn't the only one hurt by you that night.

    Do you remember the night of my first high school party? You were there. My friends were intrigued by you. They treated you as if they were never going to see you again, drinking all of you that they could. I spent two hours that night helping my friends who had fallen completely. "I'm so embarrassed," they said as I held their hair back so that they could vomit. "I'm sorry," they said when I called taxies for them, walking them out and paying the driver in advance. "This won't happen again," they said as they were sent to the hospital to have their stomachs pumped. Two 15-year-old girls slept in hospital beds that night thanks to you.

    Do you remember the night when you took advantage of my 17-year-old neighbor who had to drive to pick up his sister from her dance lessons? Do you know how we all felt when he hit another car and killed the two people in the other car? He died the next morning too. His sister walked home from her dance lesson, and passed police cars and a crowd of people gathering on the sidewalk just two blocks away from the dance studio. She didn't realize her brother was in the midst of it all. She never saw him again. And it's all your fault.

    I wish you'd walk out of my life forever. I don't want anything to do with you. Look at all the pain you've caused. Sure, you've made people happy too from time to time. But the damage you've caused in the lives of millions is inexcusable. Stop luring (引诱) in the people I love. Stop hurting me, please.

Sincerely,

Me