What does it mean to say that we live in a world of persuasion? It means that we live among competing interests. Your roommate's need to study for an exam may take priority (优先) over pizza. Your instructor may have good reasons not to change your grade.

    In such a world, persuasion is the art of getting others to give fair and favorable consideration to our points of view. When we persuade, we want to influence how others believe and behave. We may not always prevail — other points of view may be more persuasive, depending on the listener, the situ­ation, and the merit of the case. But when we practice the art of persuasion, we try to ensure that our position receives the attention it deserves.

    Some people, however, object to the very idea of persuasion. They may regard it as an unwelcome interruption into their lives. Just the opposite, we believe that persuasion is unavoidable — to live is to persuade. Persuasion may be ethical (合乎道义的) or unethical, selfless or selfish, inspiring or degrad­ing. Persuaders may enlighten our minds or get our vulnerability(脆弱之处). Ethical persuasion, however, calls on sound reasoning and is sensitive to the feelings and needs of listeners. Such persuasion can help us apply the wisdom of the past to the decisions we now must make. Therefore, the most basic part of edu­cation is learning to resist the one kind of persuasion and to encourage and practice the other.

    Beyond its personal importance to us, persuasion is necessary to society. The right to persuade and be persuaded is the bedrock of the American political system, guaranteed by the First Amendment to the Constitution (美国宪法).

    The TED speaker series features “ideas worth spreading.” With over 1,400 to choose from, we've selected a few that are perfect for students.

    Larry Smith: Why You Will Fail to Have a Great Career

    We humans have an excellent ability to make excuses for ourselves. Larry Smith, a professor of economics at the University of Waterloo in Canada, tells us why most of us will fail to have a great career. But there is a way out— if you try to pursue your passion.  

    Andy Puddicombe: All It takes Is 10 Mindful Minutes

    Between dance team, volunteering and—oh, right—lectures, your life's crazy factor is about to go way up. In this entertaining and informative talk, mindfulness expert Andy Puddicombe teaches us how to be “healthier, more mindful and less distracted” by taking just 10 minutes out of the day to be more present.

    Shane Koyczan: To This DAY for the Bullied and Beautiful

    This talk is sure to stay with you. Shane Koyczan's “To this DAY” is an affecting spoken-word poem about bullying and being different that gained over 10 million views on YouTube. In this talk, Koyczan gives a live reading of the poem, along with some stories about his background.

    Susan Cain: The power of Introverts (性格内向者)

    Does a cup of tea and a good book sound like a perfect Friday night? In this personal talk, Susan Cain argues that introverts have important talents and abilities. Our culture may value being social and outgoing, but the world needs all kinds.

It is OK not to be OK

    This is the simple encouragement people often use for themselves or others. But for professional athletes, this can be the hardest sentence to say.

    On March 6, Cleveland Cavaliers forward Kevin Love posted an article titled “Everyone is Going Through Something” on the website The Players' Tribune. In the article, the 29-year-old showed how he suffered from his first panic attack on Nov 5 in a game against the Atlanta Hawks and why he was so worried about sharing his story with the public.

    Love identified that what keeps people from speaking up about their mental health challenges is the fear that many people see them as a weakness. “Growing up, you figure out really quickly how a boy is supposed to act. You learn what it takes to 'be a man'. It's like a play book: Be strong. Don't talk about your feelings. Get through it on your own,” he wrote.

    And being an NBA player made his situation even more difficult. Love was afraid to share his struggles because he didn't want his Cavaliers teammates to think that he was unreliable.

    However, as it turned out, Love's teammates understood and supported him. Cleveland superstar LeBron James even wrote on social media that Love is “even more powerful now than ever before”.

    For Love, it was a journey of empowerment to accept and address his mental illness and share his experience with millions of people who face the same problems. In fact, he was inspired to talk about his situation by Toronto Raptors shooting guard DeMar DeRozan, who had also opened up about his mental health issues.

    Last month, the 28-year-old told the Toronto Sun that despite being a top-performing and wealthy NBA player, he still deals with constant blues. “It's one of the things that no matter how indestructible (坚不可摧的) we look like we are, we're all human at the end of the day, ”he said. “Sometimes…it gets the best of you, when everything in the whole world's on top of you, ” But other times, by admitting who we are, we can get what we want. As Love told Advance Ohio Media, “You have to let some of that stuff bleed out in order to fully recover from it.”

    A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

    “It's extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components,” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing the components together. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.

    They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, and then has to be matched well to everything it's connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

    Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

    Everyone who has eaten instant noodles knows that it's very easy to cook them quickly. However, have you ever heard of the danger of eating them?

    When taking out the noodles from the packaging, you will notice that they are joined together nicely as a piece. Do you know that it needs some form of wax coating (蜡涂层) to make them joined together nicely? Many people don't really care much about it because this seems very normal. However, studies have shown that the wax coating is bad for our body.

    It is advisable to have a break of 2-3 days before we start to eat another packet of instant noodles because our body needs about 3 days to clear that wax coating away. Do you know the danger of having too much wax coating in our stomach? It will lead to cancer if it is in our body for so long.

    Luckily, there is a way of reducing the danger before we eat instant noodles. First, wash the noodles with warm water, stir (搅拌) them and pour away the water containing the wax coating. Then repeat the first step and try to stir them again to wash away the wax coating on the noodles before cooking them. The shop vendors (供应商) will often wash away the dangerous wax coating.

    It is very easy to cook instant noodles but we must pay attention to the wax coating if we eat too much. Imagine having too much of it in your stomach. Oh, my! Hope this article will help more people know about the hidden danger!

Benefits and Problems of Genetic Engineering

    Plant breeding is the science of changing the characteristics of plants in order to produce desired ones. Genes in a plant are what determine what type of characteristics it will have. Plant breeders try to create a specific outcome of plants and potentially new plant varieties by changing the genes of the plants through breeding, which is making new plants from parents of different varieties or species.

    Actually, plant breeding has been practiced for thousands of years, since near the beginning of human civilization. It is practiced worldwide by individuals such as gardeners and farmers and by professional plant breeders employed by organizations such as government institutions, universities, crop-specific industry associations or research centers. They have crossbred plants to create the new types of plants that are, for example, bigger, stronger, or more attractive.

    Crossbreeding can take such a long time, however, and it is inaccurate. Now, we can change exact sections of Deoxyribonucleic acid (DNA), so the process is more accurate and faster. But people all over the world are arguing about its benefits and disadvantages. Some people use the technology to produce desired characteristics of plants and animals. Other people are concerned that the genetically engineered plants may harm the environment and worried that they may be dangerous for people to eat.

    There are many reasons for changing plants in this way. International development agencies believe that breeding new crops is important for ensuring food security by developing new varieties that are higher yielding(高产的), disease resistant, drought tolerant or regionally adapted to different environments and growing conditions. For example, some genetically engineered plants can live through frost or draught. As a result, famers can make more profit because fewer plants will die.

    Some genetically engineered plants are more nutritious. They have less fat, taste better or stay fresher than non-genetically engineered plants. This will allow people to buy better-quality fruit and vegetables.

    Some genetically engineered plants can resist natural pests such as viruses or insects. This reduces the amount of chemical needed to kill pests, which is helpful to the environment.

    However, genetically engineered plants can cause unexpected problems. Genetically engineered plants that resist pests may pass on that characteristic to a wild relative. This may cause the wild plant to spread fast, because pests are not naturally killing it.

    Genetically engineered plants can also harm animals. A type of corn has been developed which kills a species of insect that destroys it. The pollen (花粉) from this corn, however, can also kill monarch butterflies—the most beautiful of all butterflies, which do not harm the corn.

    To ensure the most adapted varieties are identified, advocates of organic breeding now promote the use of direct selection for many desired characteristics.

    Genetic engineering is a very new science and we have a lot to learn about the good it can do and the damage it can cause. The main concern is that not enough tests are being done to ensure it is safe.