Have you ever noticed what happens to an idea once you express it?Just talking about it or writing it down causes you to make it clear in your own mind.How can you use this to increase your brain power?Start writing.

    By putting thoughts into words,you are telling yourself the logic behind what you think,feel,or only partly understand.Often,explaining a thought is the process of understanding.In other words,you increase your brain power by exercising your “explain power”.

    Another benefit of writing is that it helps you remember.Many,if not most,highly productive people are always taking notes.You can try keeping it all in your head,but if you keep a journal of your ideas,the next time you're working on a big project,you'll probably have more success.

    Want to understand a topic?Write a book about it.That's an extreme example,but if you are learning something new,write a letter to a friend about it,and you will understand it better.Want to invent something?Write an explanation of the problem—why you want to solve it,and why it is worth solving,and you're halfway there.

    Writers don't always write because they clearly understand something beforehand.Often,they write about something because they want to understand it.You can do the same.Writing will help bring you to an understanding. Give it a try.

    For a long time, the traditional method of identifying liars was to watch their body language, including facial expressions.

    What if the person appears to be nervous? Is the person unable to look me in the eye? Is he or she look around the room? What about other nervous movements, such as fidgeting（坐立不安）or shifting from side to side? Many people—from parents to police officers and airport security personnel—depend on this method. But does a person's body and face reveal the truth? Not according to a new study.

    Talking, it seems, is the best way to smoke out a liar. That is what researchers in the United Kingdom found out recently. Their investigation took place at one place where lying can get you into big trouble—an airport.

    The researchers asked volunteers to pretend they were real passengers and then lie to airport security agents. Some of the agents used spoke conversation-based methods to question these make-believe passengers. Others depended instead on the person's body language, like lack of eye contact and showing signs of nervousness. The agents talking with the passengers were 20 times more likely to catch the liars. The study found that these conversation-based techniques can help you recognize when a person is lying to you. Like many methods, this conversation method has a name. It is called Controlled Cognitive Engagement or CCE, for short.

    The British government partly financed this study. The American Psychological (APA) published the findings. Body language cannot be trusted. Using body language and facial expressions to catch someone in a lie is really hard. And it only works, seemingly, by chance.

    Thomas Ormerod is the head of the School of Psychology at the University of Sussex in England. On the APA website, he reported that the “suspicious-signs method”—or using body language—“almost completely fails” in finding lies.

    Ahead of so-called Singles' Day on the 11th of this month，2013, online sales have already begun peaking.

    The leading e-business platform, tmall.com, has promoted(促销) its fifty-percent-off discount(折扣) to attract consumers. They are also trying to attract buyers through social media. Vice President of tmall.com Wang Yulei says more than 20 thousand online stores have joined the Double 11 Day sales. But this number has doubled. The final number of how many products going to be on sale has not been known yet. But so far, many more products planned to be put on shelves with discounts.

    During last year's Singles' Day, tmall.com, together with taobao.com, reached a record of 19.1 billion yuan in sales, which considered a milestone in the e-business history of China.

    Singles' Day was first started by Chinese college students in the 1990s as the opposite of Valentine's Day, a celebration for people without romantic partners. The timing was based on the date: Nov. 11—or double 11—for singles. Single young people would treat each other to dinner or give gifts to show love to someone and end their single status.

    But now, the Singles' Day has been promoted as a kind of grand craze just for the shopping season, thanks to thousands of discounted products being promoted online.

    Taobao.com was the first big e-retail platform which used the double 11 idea to promote sales. Taobao.com reached one million yuan worth of sales on that day in 2009, when they first promoted the Singles' Day idea. In 2010, the sales increased to 936 million yuan. The figure climbed up to 5.3 billion yuan in 2011, putting huge demand on shipping services. The figure doubled in 2012.

    E-commerce is considered to be replacing the traditional retailing industry, but the reality is that both sides are learning from each other.

    Two years ago, something happened that changed the way I look at the world. On my birthday, my grandfather, walking home with his hands full of groceries, fell and hit his head on the sidewalk. Just as we were leaving to meet him for dinner, we got the call that he was in the hospital. At first, I thought nothing of it, but when I heard the whole story, I couldn't believe it. He hit his head so hard that he had a blood clot in his brain and it had to be operated on immediately. Everyone thought he would die.

    Although my grandfather survived emergency brain surgery, he had complications (后遗症). He could hardly talk and he couldn't walk. Shortly after, he was admitted to a nursing home. Today, he lives at home with my grandmother and is doing much better, but this isn't about him. It's about what I saw at that nursing home.

    I saw something that many people haven't seen, and some do often choose to ignore it, I saw more sadness in those days visiting the nursing home than I thought. In that one place were hundreds of old people who were alone and forgotten.

    So what as to be done with the situation of the old? This is not an easy question, but something must be done. Perhaps groups in the community could assign each member to one nursing home patient with whom they could keep in regular contact. Maybe a school could focus on a nursing home and send cards, pictures and letters to residents. If periodic visits were arranged, I'm sure that for some, if not many, those students would be the only visitors they had all month. These are just a few ideas; we all need to work together.

    I hope everyone to tour a local nursing home I further expect you to do something about it. You'll brighten someone's day, or maybe even his or her life.

When Zhi Yueying,then 19,went to the remote Niyang village in Yichun City,Jiangxi Province,to work as a village teacher in 1980,villagers were doubtful if she was going to stay long.

Over the past four decades,Zhi has devoted herself to rural education.She is a recipient of Touching China awards that recognize the most inspiring role models in 2016.She was also awarded as a model poverty fighter by the government.Zhi has a profound understanding of the importance of education in the mountains.Over the years,she has taught the students and cared for them,since many of them were "left-behind" children whose parents migrated to other places to work.More than 1,000 students of hers have left the mountain area,and created a better life for themselves.

Located amid the mountains,the village was very poor and far from any town.Villagers had to hike in the mountains."I arrived at the school in an early evening,and was shocked.I had known the conditions were poor,but the reality was worse." Moreover,local people needed to go downhill to buy daily necessities,and transport them back in their hands or balanced across their shoulders."I had never walked uphill on a mountain road before,so I walked much more slowly than others;sometimes I walked slowly behind too much and was scared to tears," says Zhi.Sometimes she had to walk uphill by herself with a flashlight at night.The wild boars and rabbits sometimes frightened her and she enhanced her courage by singing loudly.

But she gradually got used to her life there.At the beginning,she found many local people valued their sons far more than their daughters,and would not like to let them attend school.Zhi went to their homes repeatedly and gradually persuaded them to send all their children to school.For those who could not afford the tuition,she spared her own money to help.

Zhi says seeing her students do well beyond the mountains is deeply rewarding."My dream,the same as before,is to stay by the side of more children.I know poverty will forever say goodbye to the mountainous villages,to my students,and to myself," says Zhi.

The American Psychological Association（APA） has issued its first advisory on social media use in adolescence（青春期）. What's most striking in its data based on recommendations is how little we really know about how these apps affect our kids.

The relative newness of platforms like Snapchat and Tik Tok means little research is available about their long-term effects on teen and tween brains. Getting better data will require significant funding—and much more openness from tech companies.

"What little evidence we do have unsurprisingly suggests that social media trades on motivators that aren't great for young brains. Many kids' first exposure to social media occurs at the worst possible time when it comes to brain development," says Mitch Prinstein, a psychologist and neuroscientist at the University of North Carolina（UNC）.

"Things like 'button and artificial intelligence（in general）' are going to affect young people's brains in a way that's very different from adult brains when it comes to the desire to stay online and to say or do almost anything to get followers." When it comes to social interactions, he compares kids' brains to a car with a huge gas pedal and weak brakes（刹车）.

Earlier this year, Prinstein and his UNC colleagues published the results of one of the first studies of how the adolescent brain reacts to social media. The team surveyed a group of middle schoolers to understand their social media habits, and then stuck them in an MRI machine to watch their brains as they reacted to social rewards or punishments. They found that 12-year-olds who habitually checked social media had distinct neural patterns, with more activities over time in parts of the brain associated with motivation, salience（or where attention is focused） and cognitive control.

The team didn't weigh in on whether those differences were good or bad, or whether the relationship was causal or correlational. But their work points to the need for more research. It should also remind parents of the need to be keenly aware of social media's hidden influence on still-developing brains.