The human athlete has a special trick that no other animal has. It is called self-talk. Athletes talk to themselves to warm up, to focus and to help themselves believe they will win. A few simple words like “I can do it!” and “It is now or never!” can make the difference between winning gold or not.

    Self-talk is also used by speakers, actors and other performers. Before a speech, politicians believe that their words will win votes. And, self-talk helps students stay calm even when stumped by hard exam questions. Self-talk is a life skill you can use wherever you are, whenever you need it.

    The whole idea of talking to themselves seems strange to many people. Imagine your teacher saying, “For homework, talk to yourself for half an hour tonight.” You might think he is playing a joke on your class. Instead, adults teach kids all about talking to other people. There are many books on why, when, what and how to communicate with the rest of the world. Thus, you can grow up knowing a lot more about people around you than about yourself.

    It is good to speak and listen to others. But there is great value in making time to listen to yourself. When you do, you get to know yourself better. Along the way, you may discover the power you have for using words well.

    Such ideas are so exciting to psychologists that they have been trying to learn more about self-talk. In the study, people found certain lost items at home more easily when they talked to themselves while searching for the things.

    Rainforests, it turns out, are not created equal. Take the Amazon rainforest, an area that covers about 7 million square kilometers. But within that huge expanse are all kinds of ecological zones, and some of these zones, says Greg Asner, are a lot more crowded than others.

    “Some forests have many species of trees,” he said, “others have few. Many forests are unique from others in terms of their overall species composition…” And all of these different small areas of forest exist within the giant space that is the Amazon Rainforest.

    So Asner, using the signature technique called airborne laser-guided imaging spectroscopy, began to map these different zones from the air. “By mapping the traits of tropical forests from above,” he explains, “we are, for the first time, able to understand how forest composition varies geographically.”

    The results show up in multicolored maps, with each color representing different kinds of species, different kinds of trees, the different kinds of chemical they are producing and using, and even the amount of biodiversity, the animal and plant species that live within each zone.

    Armed with this information, Asner says decision-makers now have “a first-time way to decide whether any given forest geography is protected well enough or not. If not, then new protections can be put in place to save a given forest from destruction.”

    Asner says the information is a great way for decision-makers to develop a “cost-benefit ratio type analysis.”  Conservation efforts can be expensive, so armed with this information, government leaders can ensure they are making the most of their conservation dollars by focusing on areas that are the most biologically diverse or unique.

    The next step, Asner says, is to take his project global, and to put his eyes even higher in the sky, on orbital satellites. “The technique we developed and applied to map Peru is ready to go global.” Asner said. “We want to put the required instrumentation on an Earth-orbiting satellite, to map the planet every month, which will give the best possible view of how the world's biodiversity is changing, and where to put much needed protections.

    Each year there is an increasing number of cars on roads and streets as millions of new cars and trucks are produced. One out of every six Americans works at putting together the parts of cars, driving trucks, building roads or filling cars and trucks with gas. Americans won't live without cars!

    Most Americans would find it hard to think what life would look like without cars. However, some have realized the serious problems of the air pollution that is caused by the car.

    The polluted air becomes poisonous and dangerous to health.

    One way to get rid of the polluted air is to build a car that does not pollute. That's what several of the large car factories have been trying to do. But to build a clean car is easier said than done. Progress in this field has been slow.

    Another way is to take the place of the car engine by something else. Inventors are now working on steam cars as well as electric cars. Many makers believe that it will take years to develop a practical model that pleases man.

    To prevent the world from being polluted by cars, we'll have to make some changes in the way many of us live. Americans, for example, have to cut down on the number of their total cars. They are encouraged to travel and go to work by bicycle. Bicycling is thought to help keep the air clean.

    But this change does not come easily. A large number of workers may find themselves without jobs if a car factory closes down. Thus the problem of air pollution would become less important than that of unemployment.

    Although cars have led us to a better life, they have also brought us new problems.

    I live in Mumbai, India, a big city, but I came from a remote Kerala village. When I was a boy, hardly anyone spoke English around me. So, at age nine, Dad sent me to Montfort, an exclusive boarding school. There, I had to speak English or be punished. My uniform was typical English public school: grey jacket，tie，and black leather shoes-so different from the clothes most people in my village wore. And our official school sport was cricket, something I'd never heard of, let alone played, before arriving.

    Montfort had been built for the children of the British officials who once ruled India, but by the time I arrived in 1961, nearly all the students were from powerful Indian families. Its English traditions, however, continued.

    When I returned home for the holidays still wearing my uniform, people stared at me like I was an alien. "Speak some English," they teased. Looking back, I unwittingly brought a bit of English culture to my village.

    But English and too much Western influence are precisely what many traditionalists and politicians fear. They ask: Will such influences finish off our own culture?

    Various leaders have tried to erase the British traditions, pulling down old British statues and replacing many British-rule city names with older native names. Some even suggest changing our weekly day of rest from the "Western" Sunday to the "Hindu" Tuesday.

    Extreme responses I say. You can't change history, and it's only natural for foreign influences to affect a nation's culture. So Indian culture, as it is today, is really a mixture derived from centuries of foreign invasions.

    Add to that the massive changes of the 20th century resulting from the television, jet-age travel, the Internet, etc.

    Everything from clothes and language to food keeps changing, yet we remain Indian. I believe that Asian cultures are too ancient and deep-rooted to be weakened by foreign influences.

    Allow me to illustrate my point. Some time ago, I took my visiting Singapore-born-and-raised cousin to a Chinese restaurant for dinner. Later, while driving home，I talked about the fine Chinese food we'd just had.

    "Was that Chinese food?" my cousin exclaimed. "Oh, I didn't know." It must have tasted too Indian for him to realize it.

    Meanwhile, like countless others, my village has transformed over the past decades. Many people wear modern clothes and TV brings cricket into local homes. There's even an English- language school, where you can hear kids giggling, yelling, flirting-all in English, but with an Indian accent. Just like the Chinese food you get in India.

    Are these foreign influences something to worry about? I don't think so. India's Chinese food tastes pretty good to me!

    "What kind of rubbish are you?" This question might normally cause anger, but in Shanghai it was brought about weary complaints over the past few months. On July 1st, the city introduced strict rubbish-sorting regulations that are expected to be used as a model for our country. Citizens must divide their waste into four separate categories and put it into specific public bins. They must do so at scheduled times, when monitors are present to ensure that rules are obeyed and to examine the nature of one's rubbish.

    Violators could be hit with fines of up to 200 yuan ($29). For repeat violators, the city can add black marks to their credit records, making it harder for them to obtain hank loans or even buy train tickets.

    Shanghai authorities are responding to obvious environmental problem. It produces 9 million tons of garbage a year. But like other cities in china, it lacks a recycling system. Instead, it has relied on rubbish pickers to pick out whatever can be reused. This has limits. As people get wealthier, fewer of them want to do such dirty work. The waste, meanwhile, just keeps piling up. China produces 80 billion pairs of one-off chopsticks a year.

    Many citizens appear to support the idea of recycling in general but are frustrated by the details. Rubbish must be divided according to whether it is food, recyclable, dry or hazardous(有害的), the distinctions among which can be confusing, though there are apps to help work it out. Some have complained about the rules surrounding food waste. They must put it straight in the required public bin, forcing them to tear open plastic bags and toss(投掷）it by hand, Most annoying are the short periods for throwing trash, typically a couple of hours, morning and evening. Along with the monitors at the bins, this means that people go at around the same time and can keep an eye on what is being thrown out; no one wants to look bad.

    Convincing someone to change their mind is really the process of convincing them to change their tribe (部落). If they abandon their beliefs, they run the risk of losing social ties. You can't expect someone to change their mind if you take away their community too.

    The way to change people's minds is to become friends with them, to combine them into your tribe, to bring them into your circle. Now, they can change their beliefs without the risk of being abandoned socially.

    The British philosopher Alain de Botton suggests that we simply share meals with those who disagree with us: "Sitting down at a table with a group of strangers has the incomparable and odd benefit of making it a little more difficult to hate them without punishment. Prejudice and conflict between groups of people from different nations or races feed off abstraction. However, during a meal, something about handing dishes around, unfolding napkins (餐巾纸) at the same moment, even asking a stranger to pass the salt makes us less likely to hold the belief that the outsiders who wear unusual clothes and speak in distinctive accents deserve to be sent home or attacked. For all the large-scale political solutions which have been proposed to ease racial or cultural conflict, there are few more effective ways to promote tolerance between suspicious neighbours than to force them to eat supper together."

    Perhaps it is not difference, but distance that produces tribalism and unfriendliness. As proximity increases, so does understanding. I am reminded of Abraham Lincoln's quote, "I don't like that man. I must get to know him better." Facts don't change our minds. Friendship does.

    The Japanese writer Haruki Murakami once wrote, "Always remember that to argue, and win, is to break down the reality of the person you are arguing against. It is painful to lose your reality, so be kind, even if you are right."

    When we are in the moment, we can easily forget that the goal is to connect with the other side, cooperate with them, befriend them, and integrate them into our tribe. We are so caught up in winning that we forget about connecting. It's easy to spend your energy labeling people rather than working with them.

    The word "kind (family and relatives)" originated from the word "kin (old fashion of family and relatives)." When you are kind to someone, it means you are treating them like family. This, I think, is a good method for actually changing someone's mind. Develop a friendship. Share a meal. Gift a book. Be kind first, be right later.