Do you know how it is when you see someone yawn and you start yawning too? Or how hard it is to be among people laughing and not laugh yourself? Well, apparently it's because we have mirror neurons (神经元）in our brains.

    Put simply, the existence of mirror neurons suggests that every time we see someone else do something, our brains imitate (模仿)it，whether or not we actually perform the same action. This explains a great deal about how we learn to smile, talk, walk, dance or play sports. But the idea goes further： mirror neurons not only appear to explain physical actions _y they also tell us that there is a biological basis for the way we understand other people.

    Mirror neurons can undoubtedly be found all over our brains, but especially in the areas which relate to our ability to use languages, and to understand how other people feel. Researchers have found that mirror neurons relate strongly to language. A group of researchers discovered that if they gave people sentences to listen to ( for example ："The hand took hold of the ball" ) , the same mirror neurons were triggered as when the action was actually performed (in this example, actually taking hold of a ball).

    Any problems with mirror neurons may well result in problems with behavior. Much researeh suggests that people with social and behavioral problems have mirror neurons which are not fully functioning. However, it is not yet known exactly how these discoveries might help find treatments for social disorders.

    Research into mirror neurons seems to provide us with ever more information concerning how humans behave and interact(互动）.Indeed, it may turn out to be the equivalent (相等物）for ncurosciencc of what Einstein's theory of relativity was for physics. And the next time you feel the urge to cough in the cinema when someone else does--well，perhaps you'll understand why.

    How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.

    The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.

    The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. “It's kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.

    The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart but also fun,” Several says.

    Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

    The company says the Kolibree will go on sale this summer, for $99 to $199, developing on features. The U.S. is the first target market.

    Serval says that one day, it'll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.

    Visitors must present all carried items for inspection upon entry. After inspection, all bags, backpacks, umbrella, parcels and other items as determined by security officers must be left at the checkrooms, free of charge, close to each entrance. All oversized bags, backpacks and luggage must be left at the checkrooms near the 4^th Street entrance of either the East or West Building. These items will have to be x-rayed before being accepted. Items of value, such as laptop computers, cameras and fur coats, may not be left in the checkrooms but may be carried into the gallery. We regret that the museum doesn't have enough space for visitors items larger than 17*26 inches in the gallery.

    Additional security procedures and checks may be taken according to the decision of the gallery.

    *For the safety of the artworks and other visitors, nothing may be carried on a visitor's back. Soft front-baby carriers are allowed, but children may not be carried on shoulders or in a child carrier worn on the back. Wheelchairs are available free of charge near each checkroom.

    *Smoking is prohibited. Food and drink are not permitted outside the food service areas. Unopened bottled water may be carried only in a visitor's bag. Cell phones may not be used in the gallery.

    *Animals, other than service animals, are not permitted.

    *Skateboarding is prohibited.

    *Picture-taking(including video) for personal use is permitted except in the special exhibits.

    *Please don't touch the works of art.

    Teens who are preparing to undergo cosmetic surgery(整容手术) often have unrealistic expectations. The growing numbers of makeover television shows which make cosmetic surgery seem simple，have encouraged adolescents to pursue surgery to improve their physical appearance. As a result, more teenagers are going under the knife to achieve a desired look.

    When teens feel the need to have plastic surgery, they believe that it is not a huge deal, but they may not be mature enough to make such a life altering decision. If teens feel inadequate before surgery，they will most likely feel disappointed afterwards. Not only is surgery complex and risky for mature adults，it is extremely dangerous for younger people，and some doctors are performing these procedures on kids as young as fourteen！

    The cost of procedures can add up to thousands of dollars. Insurance does not cover the costs of these procedures. Teenagers often pay for surgery themselves 一 a very costly purchase for a young person. Not only can surgery become addictive for insecure teens，the consequence can be disappointing. When surgery takes an unexpected wrong turn, irreparable (不可挽回的）damage can occur. Any surgery on a young，undeveloped person has a risk of complication (并发症）such as infection (感染），which can lead to death.  Even if . there are no complications, there is no guarantee that surgery will provide the perfect nose or sculpted body. No matter how minor the procedure, it is not as effortless as it appears.

    Of course, there are cases where plastic surgery is appropriate. If a child has a serious injury or scarring from an accident，it can be beneficial. In all cases, parents must be involved in the process for the welfare of their child, and must guide them in the right direction. Fortunately, parents or legal guardians (监护人）must sign documents allowing their child to have plastic surgery. Doctors also need to be a part of the decision. Most experienced and trust-worthy physicians turn down the opportunity to operate on a teenager unnecessarily.

    Plastic surgery is a life-changing experience.  Hopefully, more teens will realize that there is more to a person than physical beauty, and learn to accept themselves for who they are.

Essentials of Nutrition — Good nutrition VS malnutrition (营养不良)

    Author: Joel Bressler

    Price: $29. 99

Essentials of Nutrition touches important health topics such as: the positive and negative aspects of nutrition; the importance of exercise; the necessity of vitamins, minerals, and water. It also advises how doctors and educators will improve our health in the future.

    Preserve the Best and Conserve the Rest—Memoirs (回忆录) of a US Forest Service Wildlife Biologist

    Author: Hadley B. Roberts

    Price: $19.99

Preserve the Best and Conserve the Rest covers US Forest Service wildlife biologist Hadley B. Roberts' half-century career in wildlife and fish habitat conservation and preservation. It includes his accomplishment, motives and influences behind his actions.

Poodle (贵宾犬) Mistress —The Autobiographical Story of Life with Nine Toy Poodle

    Author: Sandi Latimer

    Price: $22.99

Poodle Mistress is a story of unconditional love and devotion about nine dogs that changed author Sandi Latimer's life. Her memoir (回忆录) details a twenty-seven-year journey as she and her husband cared for and enjoyed the funny behaviors of their toy poodles.

A Professor and CEO True Story—A Fascinating Journey to Success

    Author: Richard T. Cheng

    Price: $13.95

In A Professor and CEO True Story, Richard T Cheng shares how he overcame great odds and transformed from a struggling immigrant to million-dollar CEO and esteemed professor. This is a powerful and inspiring story of success and survival.

    FROM dogs and cats to pandas and penguins, lists of adorable animals can be very varied. However, when it comes to scary animals, the answers are often more or less the same­snakes and spiders are among the most dreadful ones for the majority of us.

    However, most of us have never been bitten by a snake or a spider. So does this mean we are born with a fear of certain things?

    Scientists have been actively looking into it for a long time. For example, studies have suggested that babies find live animals much more interesting than stuffed （毛绒填充的） ones. This interest continues even if those animals are snakes and spiders.

    A study published in Psychological Science in 2008seemed to show that snakes did have a different impact on babies. When scientists presented babies with animal videos along with random sounds of happy or frightened human voices, hey found that babies looked at snakes for longer than any other animal however the voices sounded.

    Now, a team from Rutgers University in New Jersey, US has tried to challenge the idea that babies are born with a fear of snakes and spiders. According to the BBC, the researchers measured babies' physiological （生理的） responses as they watched videos of snakes and elephants paired with both fearful and happy voices.

    Scientists then set out to surprise the babies to see how they would react. They presented them with an unexpected bright flash of light as they watched a video. As the BBC explained, a surprise like this would be more intense （强烈的） if the babies were already scared, just like when we watch scary films and jump more if we are already scared.

    However, according to their findings, published recently in the Journal of Experimental Child Psychology, babies 'surprised responses were not bigger when watching a video of a snake, even when it was shown with a fearful voice. Their heart response was also lower, which also made it seem that babies were not scared.

    "Children do not have an innate fear of snakes," concluded the study. Even if previous studies had suggested that babies have different responses to snakes, it isn't necessarily related to fear. "It's possible that paying more attention to something might make fear learning easier later on. It leads to fear learning," said research co­author Vanessa LoBue. She further explained that it was a good thing that humans didn't have an inborn fear of snakes because it would make a young infant's desire to explore new things less strong.

    Instead, we have evolved to quickly learn to be afraid of something if it turns out to be dangerous.