People say that one man can't make a difference, but Abdul Samad Sheikh, a 60-year-old rickshaw(人力车)driver from Bangladesh, has proved that doing a small thing over a long period of time can mean very much. He has planted at least one tree every day since he was 12 years old, which means that he has so far planted a small forest of over 17,500 trees. Imagine if everyone followed his example.

    Abdul has worked as a rickshaw driver for most of his life. He makes a little money from his job, which is only enough to put food on the table for his family, but he somehow tries to also buy at least one tree everyday. He considers it his duty to the world. Mostly he plants them on government land so nobody can cut them down later. He also them, and if he sees anyone cutting a tree, he blames them.

    Abdul, this wife Jorna, and four of their children live in two old houses, on a piece of land that is owned by the Faridpur deputy commissioner's office. They have no land of their own.

    Sometimes, she commands him not to plant trees but he doesn't listen. Abdul's 30-year-old son, Kutub Uddin, has never told his father not to plant trees, because he thinks his father does a good thing for society.

     Abdul's neighbors all know about his daily habit, and praise his work. Whoever can ask of him anything, he will do his best to help. Therefore, Abdul is loved by neighbors.

    For his efforts, Abdul Samad Sheikh was recently honored by The Daily Star, and given $1, 253 to help him build a better home for his family. The Daily Star hoped everyone to follow his example, and protect the environment.

“I can't do it alone. I need the help of you all,” Abdul said in his speech.

    Stained glass (彩色玻璃) artists create different designs by making cuts on the glass to “score” it and then breaking off the pattern that they want to use in the finished product. The most difficult cut in stained glass is called an inside cut. Basically, it's a curved (弯曲的) line where you throw away the part inside of the curve. The problem with inside cuts is that the edges of the curve tend to break off when the pieces of scored glass are broken apart.

    As the artist talked about inside cuts, he said, “The glass will break into pieces if you try to cut too much off at once. The best way to do an inside cut is to slice off smaller curves piece-by-piece. In fact, it's not just the best way to do it, but it's the only way to do it.”

    How many times do you try to make a big change and cut the entire piece at once? We convince ourselves that we can do this all the time. We'll commit to transforming our diet overnight or we get inspired to launch a business in a weekend or we finally get motivated to work out and push ourselves to the edge of burning out.

    Why not approach your goals and dreams like a stained glass artist? Starting by slicing a shallow curve and breaking a small piece off, you cut a slightly deeper curve and break that off until you have your full inside cut. By slowly cutting deeper and deeper curves, you prevent the glass from breaking as it changes shape.

    Of course, change isn't easy — no matter how you do it. Slow gains are boring, but if we keep making small improvements, then pretty soon we will end up with a beautiful masterpiece on our hands instead of a bunch of broken pieces.

                                       Cell phones：Is there a cancer link?

    Could your cell phone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and Wi-Fi could be responsible for a range of illnesses, from rashes to brain tumors.

    Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there's a greater than 95 percent chance that power lines can cause childhood leukemia (白血病). Also there's a greater than 90 percent chance that cell phones can cause brain tumors. “It's apparent now that there's a real risk, ”said Carpenter.

    But others believe these concerns are not justified. Dr Martha Linet, head of radiation epidemiology (流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don't support warning labels for cell phones, ”said Linet. “We don't have the evidence that there's much danger.”

    Studies so far suggest a weak connection between EMFs (电磁场) and illness—so weak that it might not exist at all. A multinational investigation of cell phones and brain cancer, in 13 countries outside the US, has been underway for several years. It's funded in part by the European Union, in part by a cell phone industry group. The final report should come out later this year, but data so far don't suggest a strong link between cell phone use and cancer risk.

    Teachers in some secondary schools in Britain are worried that their job may become impossible shortly unless something can be done to restore discipline in the classrooms. In the problem schools, mostly in large cities, a small minority of teenage pupils disturb lesson to such an extent that the teacher can no longer teach their classes effectively.

    Some people consider that the permissive (随意) nature of modern society is responsible for such kind of behavior. Small children who are continuously encouraged to express themselves without reservation are naturally unwilling to accept school discipline when they grow older. Furthermore, modern teaching techniques) which appear to stress personal enjoyment at the expense of serious study work, might be teaching the child to put his own interests before his duties to the community in which he lives.

    Perhaps the problem can be solved by improving facilities for the moral guidance of these difficult children or by better cooperation between the schools and the parents—for the parents may be mainly responsible for the bad behavior of their youngsters. Violence at home, violence and crime on TV make some children turn violence themselves.

    But some of the teachers believe that there ought to be a return to more “old fashioned” methods. At present, in some school teachers are even not allowed to punish a child who does something bad and wrong. Physical punishment is not permitted now. People are too soft on children these days. It seems that children can do whatever they like at school while the teachers can't do anything to punish them. I don't know why the schools authority abandoned some of the effective punishments that worked well. Things like that didn't happen when we were at school because the teachers kept those problem students under control by using a stick.

    Robots are increasingly being developed to think and act like humans. But it is difficult for engineers to create humor (幽默) in machines. Computer scientists have hoped to help them understand humor. But they failed again and again. Why is it so difficult?

    Kiki, a computer language expert (专家), studies humor at a university. "Most robots are powered by artificial intelligence (人工智能AI). But AI will never understand jokes like humans do." He said, "The main problem is that AI system doesn't have the sense of humor."

    Other experts agree that context (语境) is very important to understand humor, both for humans and robots. In one project, Tristan Miller, a computer scientist, studied more than 10, 000 puns. Puns are a kind of joke that uses a word with two meanings. For example, you could say, "Balloons (气球) do not like pop music." The word "pop" can be a way of saying popular music, or "pop" can be the sound a balloon makes when it explodes(爆炸). "A robot might not understand the joke because it doesn't know the meaning of the puns." Miller said.

    Although it's difficult, some scientists say there are good reasons to keep trying to teach humor to robots. It can make machines understand humans better and serve humans better. And it can also help them to think more like humans.

    But other scientists don't think it's a good idea to teach humor to robots. They may find humor, but they may use it in a wrong way. Maybe bad Al will start killing people because it thinks it is funny. Besides, it may make some people feel not safe. The comedians(喜剧演员) may lose their jobs when the robots can understand humor.

Clair Hughes initiated her quest for frugal methodologies to extricate herself from a £3,500 educational advance that had spiraled into a financial overhang. This economic strategist commenced an online odyssey in search of vouchers that would provide her with markdowns on her purchases. She divulged that the full value of an item seldom left her wallet, proclaiming, "Deductions are perpetually accessible; the key lies in meticulous organization. Initially, I anticipated an onerous endeavor, but I have now assimilated this lifestyle to the point where it has become second nature. I have effortlessly amassed savings exceeding £15,000."

In the year 2010, Ms. Hughes directed her attention towards fiscal conservation when she relocated to share a domicile with her significant other, Shane Byrne, an instructor within the telecommunications sector. Seeking counsel through digital means, she implemented a series of astute financial maneuvers, such as transferring her financial overdraft to an account that levied no interest. Subsequently, after a few years, she encountered an online collective of individuals devoted to the art of voucher accumulation and resolved to experiment with their practices.

She dedicated considerable time to navigating the digital expanse in pursuit of vouchers, meticulously printing each one to accompany her on her commercial forays. Over the passage of time, she has secured some remarkable bargains. On one occasion, a pair of luminaries valued at £140 were hers for the mere sum of £35.

Two years prior, Ms. Hughes expanded her repertoire of economic strategies by incorporating rebate applications that offer monetary restitution on a spectrum of items from alcoholic beverages to personal care products. Post each commercial venture, she uploads visual documentation of her financial transactions, which are subsequently scrutinized, and restitution is granted on certain acquisitions.

Among her other premier recommendations for financial prudence, Ms. Hughes advocates participation in remunerative online surveys, which have yielded her a substantial cache of vouchers. She remarked, "I have encountered accounts of individuals gathering forsaken receipts from shopping carts to seek overlooked discounts. The extent to which vouchers and rebate applications have been of service to me is astonishing. The community significantly enhances my financial endeavors. There is invariably an individual prepared to elucidate the operational intricacies."