Vitamin B could help reduce the effects of the dangerous type of air pollution, according to a new study published on Monday. In the first study of its kind, a team of international researchers looked into the damage caused by one of the pollutants that have the severest impact on health—PM2.5.

    They found that Vitamin B supplement could effectively reduce the impact of the tiny particles     （颗粒）on the human body, although they stressed that the research was in its early stages. According to the WHO, 92% of the world's people are living in places where the PM2.5 level goes beyond the recommended level. So it's urgent to find a solution to the problem.

    According to this study, published in the PNAS, 10 volunteers were initially exposed to clean air and given a placebo (安慰剂）to check their baseline responses. The group then kept on taking placebos tor tour weeks before being exposed to heavily polluted air from downtown Toronto, where an estimated 1,000 cars passed every hour. The bad air was delivered to the volunteers through an "oxygen type" face mask. The experiment was then repeated, with each volunteer taking a Vitamin B supplement daily, made up of 2.5mg of folic acid, 50mg of Vitamin B6, and l mg of Vitamin B12.

    Vitamin B6 can be found in liver, chicken, nuts and other things, and Vitamin B12 in fish, meat, eggs, milk and some cereals. The researchers found that four weeks of Vitamin B supplements — the damage of PM2.5 effects by 28-76%. The results emphasized how prevention at an individual level could be used to fight against the damage of PM2.5, the researchers said.

    It was an oral English class and in front of us was standing our teacher Lila Betray, who was a university student from the US. Somehow we came to the point whether any of us could sing an English pop song in front of the class. You know, maybe three or more out of ten Chinese students are shy in class. As a result, there was silence in class for quite a while, which made everybody feel rather embarrassed (尴尬的), including the teacher.

    I was a shy boy. However, just at that moment, a great idea struck me suddenly. “Seize the enjoyment! Seize the chance. Yes, there couldn't be a better chance.” I said to myself. “Why not seize it? Why should I have always to be the guy regretting missing the opportunity just because of shyness? Yes, maybe I should have a try!”

    So, I raised my hand. And I remember that it took me quite a while to think what the song's name was. Though I sang no more than five sentences because of forgetting the lyrics (歌词), their clapping hands told me that I did the job well. Later, I got a gift and I was really happy.

    I think that is one of the most unforgettable moments in my life. Through this experience, I've also got to know that we should believe that we can do the job well, no matter how difficult it seems for us. Just have a little more courage.

    I will absolutely be the first person to romanticize libraries. I come from a home with thirty-two bookcases, a count that does not include the several dozen boxes of books in the attic labeled "work" and "extra." All these books are courtesy of my parents, both of whom were English majors in their day and in whose footsteps I never hesitated to follow. My childhood dream was of a house with a claw-foot bathtub, stained glass, and (most importantly) an enormous library made of built-in shelves, a sliding ladder, and window seats in every window. As a high school girl, I began working at the county library near my house, following up on two summers of volunteering with their summer reading program. I was all starry eyes and romantic visions of alphabetizing the classics and discovering gems among the new arrivals. What I found instead was that the life of a library was nothing like my daydreams, but far more important than I could have imagined.

    There is no library that is only a library anymore. Modern libraries can't afford and don't try to be only a receptacle for free books. They offer classes, book groups, Internet access, resume and tax help, tutoring, and multimedia resources for anyone who might wander in. Librarians are equipped to help with research and give recommendations. Most libraries have access to interlibrary loans, making the acquisition of nearly any piece of material merely a matter of time. What makes libraries so unique and important, however, is none of the diversity of resources and opportunities for community that they most certainly provide.

    ____________________________________. Every building one enters today comes with some expectation of spending money. Restaurants require paying for service. Shops require the intention of purchasing something. Houses require rent. Anyone who has lived near the poverty line, whether or not they have actually been homeless, has felt the threatening pressure toward expenditure that permeates the public spaces of modern Western culture. Even a free restroom is becoming difficult to find, especially as growing cities experience ever-increasing space restrictions.

    In a library, no one is asked to pay anything simply to sit. For those with few resources besides time, this is a godsend. Libraries are unofficial playgrounds for low-income families on rainy days, homeless shelters in cold months, reprieves from broken homes for grade-school-age children. They are the last bastions of quiet and calm where nothing is asked of one but to exist. Many arguments have been made about how the library is an outdated institution offering outdated services—that in the twenty-first-century how-to books on building sheds and daily newspaper copies are obsolete and the funding used for libraries ought to be reallocated to other programs. I can only assume that those who make such arguments are people who have always been comfortable with the expenditures it takes to move through the world. For those people, libraries can be about books. But not everyone has the luxury of seeing past the space.

    Libraries, as they exist in the twenty-first century, are the only remaining public domain. In a library, anyone of any walk of life can come and go as they choose, and so long as they remain respectful of the space they can remain as long as they wish. Libraries welcome everyone, offering a place to be and easily accessible resources to the most vulnerable populations, whether in downtown Chicago or small-town Oklahoma. My childhood romantic vision of the library is still close to my heart, but the very real work that public libraries do today is so much more critical than a leather-bound edition of Homer or a graphic novel fresh off the press. Those are the things the library gives me, but libraries are for everyone.

Cara Jumper loves the giant saltwater pond on her grandparents Swansea, South Carolina, property(房产). One January afternoon, her grandfather Coy Jumper piled ten-year-old Cara and her sister, Claire, six, and Emma, five, into his Pontiac Sunfire and took them down to the pond. He and the girls walked happily through the pines, checking traps. No luck—they were empty.

    As the sun disappeared gradually toward the horizon, the group turned back to head home. But as Coy walked along the bank, he was suddenly unable to put one foot in front of the other. Then Cara saw Coy walk unsteadily and fall backward into the pond's deep water.

    When her grandfather didn't surface immediately, Cara jumped in. With one hand, Cara grabbed the bank. With the other, she reached for her grandfather, making contact in the dark water.

    Coy had suffered a stroke(中风) the year before. Now Cara wondered if he'd had one again. Just 80 pounds to her grandfather's 230, she held his head and pulled his face out of the water. That woke him, but he was still dead weight. She managed to move Coy towards the three-foot bank and pulled him up onto solid ground.

    The winter sun had almost disappeared, and they were all trembling. Cara knew she'd have to get Coy to the car, a quarter mile away. She helped him to his feet. Coy slowly moved forward.

    Sixty feet from the car, Coy fell. From there, he crawled, dragging himself under a gate, to the car. His granddaughters helped him into the passenger's side, and Cara got into the driver's seat.

"I used to sit on my dad's lap and drive," she says now. Coy, too, she says, had let the fifth grader drive through the fields around the house. Still, she felt nervous, but she pushed on the gas and steered(驾驶) them the three miles home. "I was trying to get there fast, but I didn't want to get us hurt," Cara says. When she pulled the Sunfire into the garage, her grandmother, Esca was there to meet them.

Coy spent six days in the hospital recovering from a stroke. Says Esca, "If Cara hadn't helped, she might not have a grandpa anymore."

    Humans were designed to stand upright. And yet in this modern world, too many of us spend our days with our heads lowered for a simple reason: we're staring at the tiny screen of a smart phone.

    People spend an average of 2 to 4 hours each day with their neck bent while shooting off emails or texts. That's 700 to 1,400 hours a year. The success of social media has led to a rapid development of bad smart phone posture(姿势).

    The average adult head weighs 10 to 12 pounds when it's in the upright position. However, because of the gravity, bending your head at a 15 degree puts 27 pounds of pressure on your spine(脊椎); a 30 degree neck bend could equal 40 pounds of pressure; a 45 degree bend adds the force of 49 pounds, according to the research from Dr. Kenneth Hansraj from New York. These stresses may lead to many problems.

    It's no secret that correct posture is better for your back. According to the researchers, good posture is described as ears aligned(成一条直线) with the shoulders. In proper alignment, spinal stress disappeared. It is the best position for the spine. Standing tall doesn't just make you look better; it improves your health, too. Other studies have found good posture has even been connected to ways of behaving. People who have poorer posture often have poorer physical and emotional health.

    The researchers describe bad posture as “the head in a forward position and the shoulders dropping forward in a rounded position”. Bad posture has been connected to many medical problems, including headaches and other problems, depression and heart disease. This is why Hansraj said it's important to be mindful of your smart phone posture. Though it is nearly impossible to avoid the technologies that cause these problems, people should make an effort to look at their phones with a correct posture.

    While famous foreign architects are invited to lead the designs of landmark buildings in China such as the new CCTV tower and the National Center for the Performing Arts, many excellent Chinese architects are making great efforts to take the center stage.

    Their efforts have been proven fruitful. Wang Shu, a 49-year-old Chinese architect, won the 2012 Pritzker Architecture Prize -which is often referred to as the Nobel Prize in architecture-on February 28. He is the first Chinese citizen to win this award.

    Wang serves as head of the Architecture Department at the China Department at the China Academy of Art (CAA). His office is located at the Xiangshan campus (校园) of the university in Hangzhou, Zhejiang Province. Many buildings on the campus are his original creations.

    The style of the campus is quite different from that of most Chinese universities. Many visitors were amazed by the complex architectural space and abundant building types. The curves (曲线) of the buildings perfectly match the rise and fall of hills, forming a unique view.

    Wang collected more than 7 million abandoned bricks of different ages. He asked the workers to use traditional techniques to make the bricks into walls, roofs and corridors. This creation attracted a lot of attention thanks to its mixture of modern and traditional Chinese elements.

    Wang's works show a deep understanding of modern architecture and a good knowledge of traditions. Through such a balance, he had created a new type of Chinese architecture, said Tadao Ando, the winner of the 1995 Pritzker Prize.

    Wang believes traditions should not be sealed in glass boxes at museums. "That is only evidence that traditions once existed," he said.

    "Many Chinese people have a misunderstanding of traditions. They think tradition means old things from the past. In fact, tradition also refers to the things that have been developing and that are still being created, "he said.

    "Today, many Chinese people are learning Western styles and theories rather than focusing on Chinese traditions. Many people tend to talk about traditions without knowing what they really are," said Wang.

    The study of traditions should be combined, with practice. Otherwise, the recreation of traditions would be artificial and empty, he said.