Smoking is harmful. But as soon as you quit the habit, everything will be OK, right?

    Wrong

    New research has found that even if you give up smoking, the damage it has done to your genes (基因) will stay there for a much longer time.In the research, a team of US scientists studied the blood of 16,000 people. Among them, some were smokers, some used to smoke, and the rest were non-smokers. Scientists compared their genes and found that more than 7,000 genes of smokers had changed--a number that is one-third of known human genes.

    According to NBC News, both heart disease and cancer are caused by genetic changes. Some people may have had the changes when they were born, but most people get them in their day-to-day lives while doing things like smoking.

    When you stop smoking, a lot of these genes will return to normal within five years.

This means your body is trying to heal (治愈) itself of the harmful effects of smoking. But the changes in some of the genes stay for longer. They can stay for as long as 30 years, It's almost like leaving a footprint on wet cement (水泥)—-it will always be there, even when you've walked away and when the cement becomes dry.

    Although the study results may make people unhappy, there is a bright side: the findings could help scientists invent medicine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer risks.

    The brain of an insect isn't very big. But insects are somehow still able to make lots of important decisions. Bees, ants and roaches(蟑螂) build hives(巢穴)with thousands of workers doing specialized work. The jobs are done without a head or even a plan. How do insects manage this?

    To solve the mystery, scientists in Belgium spent months building robotic roaches and then putting them among real roaches. The final goal of the research is to find out how the simple behavior of individuals gives rise to a collective decision. The roach is a good starting point for trying to answer the big question because its social system is simple enough for scientists to study.

    The first step was to build robots that real roaches would accept as their own. Although the robotic roaches don't look much like the real thing, they have similarities with them in three key ways: they naturally head toward dark areas, they are influenced by the behavior of other roaches, and even more importantly, they smell like roaches.

    The next step was getting the robotic and real roaches to work together on common tasks. In experiments, the robots would collectively head towards a dark place, copying the behavior of natural roaches. That got the researchers wondering: if you program the robotic roaches to go woward the lighted place, would the real roaches follow, going against their natural instincts.(本能) ?

    They will – it turned out. Many of the real roaches followed the robots to a lighter shelter. But influence turned out to be a two- way street. On occasion, the real roaches were able to override the programming of the robot roaches and get them to turn into dark hiding places. Being social creatures, both the robotic and natural roaches were paying attention to and following the example set by others.

    In theory, it would be possible to create a robot that could influence collective decision-making in humans. To do this, researchers would have to invent a robot that people would accept. Fortunately, the technology isn't there yet.

    China, org. cn selected its top 10 people who moved China in 2012. These heroes included a jet engineer, a businessman, a teacher, as well as nurses and migrant workers. Here are the accounts of the exemplary deeds of Zhang Lili, a teacher. Zhang Lili is a teacher at the No. 19 Middle School in Jiamusi, Heilongjiang Province. She suffered from serious injuries after saving two students from being hit by an oncoming bus on May 8.

    Zhang and her students were crossing the road just outside the school gate when suddenly a runaway school bus changed direction towards the students. Zhang managed to push both students out of the vehicle's destructive (破坏的，毁灭性的）path, but she herself did get run over. Her legs were crushed and later had to be cut off above the knee.

    Bom on Jan. 19, 1984，in Jiamusi, Zhang was a 168cm-tall lively and cheerful young woman who had devoted herself entirely to her job. She got married in 2009. The couple planned on having a baby after the graduation of her class.

    Zhang's act of heroism has moved a large number of people. She was even named “the most beautiful teacher” by netizens. She was awarded the “May I Labor Medal” and given the title of “Female Pace-setter” by authorities. She became a Party member in July.

    Do you still remember your favorite poem from high school or some other important periods in your life？Why is it that decades later it still stands out in your mind？Probably the main reason is that some aspect of that poem resonates (引起共鸣) with you. In the same way, you too as a school leader can touch the hearts of your teachers and students.

    Poetry allows us to experience strong spiritual connections to things around us and to the past. The power that poetry has displayed over time and across cultures actually satisfies this common need of the human heart and soul.

    As one of the oldest art forms, poetry has successfully connected various parts of humanity (人性) from one generation to another. Referring to poetry, Hillyer makes a simple yet meaningful statement, “With this key mankind unlocked his heart.”

    School leaders can find and make use of the value of poetry for themselves, their students and their teachers. Beyond the simple use of poetry, techniques of poetry such as repetitions can be used to take advantage of the power of language to transform communication, create meaning and a culture of care and attention.

    Since schools are mainly about people and relationships, school leaders, like poets, are required to inspire and encourage the human heart. The use of poetry—or even of some techniques of poetry—in school leadership not only helps to improve communication, but also serves to meet the human need for inspiration.

    It's holiday season and time for shopping. There are a bunch of items on your shopping lists ranging from small gifts, toys and festive decorations to Christmas and New Year cards. What's your first react ion to products labeled “Made in China”? If you still tend to relate “Made in China”to poor quality. You need to update your ideas. China's ability to produce high-quality product s has been recognized by a growing number of foreigners. It's a misunderstanding to associate low quality with“Made in China”.

    Cameron Purdy, a Web user, says that China manufactures poor-quality products does not mean it cannot manufacture high-quality product s. He explains that the poor-quality products one purchases in the US for example, are made in the quality that the American companies ask for. “The price that you pay for the product has no relationship to the cost of its manufacturing,” suggested Purdy. For example, for an item priced at $20 in the US, the cost of manufacturing it paid by the American company is usually less than $1. To guarantee the room for profit, the Chinese co-manufacturer spends less than $1to produce the item.

    Amanda Wu, who lives in Shanghai, noted that many top brands have manufacturing factories located in China, and the most convincing example of China's manufacturing quality is Apple products. On the back of the iPhone, one can find the product is Made in China—“Designed by Apple in California. Assembled (装备) in China. ”Chinese and foreign Web users commented that some Chinese pro ducts with good reputations around the world are Haier, Lenovo, GREE, Huawei and China Railway High-speed.

    On the other hand, foreign misunderstandings can sometimes affect Chinese people's minds. For instance, when Chinese people travel abroad, some would still avoid buying products Made in China. It's time for the world to stop relating Made in China with low-quality products. Just remember, you get what you pay for.

    Five years ago, when I taught art at a school in Seattle, I used Tinkertoys as a test at the beginning of a term to find out something about my students. I put a small set of Tinkertoys in front of each student, and said: "Make something out of the Tinkertoys. You have 45 minutes today — and 45 minutes each day for the rest of the week."

    A few students hesitated to start. They waited to see the rest of the class would do. Several others checked the instructions and made something according to one of the model plans provided. Another group built something out of their own imaginations.

    Once I had a boy who worked experimentally with Tinkertoys in his free time. His constructions filled a shelf in the art classroom and a good part of his bedroom at home. I was delighted at the presence of such a student. Here was an exceptionally creative mind at work. His presence meant that I had an unexpected teaching assistant in class whose creativity would infect(感染) other students.

    Encouraging this kind of thinking has a downside. I ran the risk of losing those students who had a different style of thinking. Without fail one would declare, "But I'm just not creative."

    "Do you dream at night when you're asleep?"

    "Oh, sure."

    "So tell me one of your most interesting dreams." The student would tell something wildly imaginative. Flying in the sky or in a time machine or growing three heads. "That's pretty creative. Who does that for you?"

    "Nobody. I do it."

    "Really-at night, when you're asleep?"

    "Sure."

    "Try doing it in the daytime, in class, okay?"