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    Every year, hundreds of millions of Monarch Butterflies(黑脉金斑蝶) from Canada and the United States journey as far as 2, 500 miles to the forests of Michoacan, Mexico, a place which has the world's largest insect migration(迁移). It's such a breathtaking sight, but as always, human greed is threatening to destroy it.

    The Monarch Butterflies start to arrive in Michoacan in late October to make their winter home in the trees high up in the mountains of the natural reserve. Once there, they gather together in large masses. These masses often become so heavy that they cause tree branches to bend or even break. But there's a purpose of all these massing — it allows the butterflies to survive in the low nighttime temperatures at these high altitudes.

    The Michoacan Monarch Butterfly Sanctuary is most impressive during the months of February and March, just before the winged insects begin their long journey home.

    Mexico's Butterfly Forest is a shelter protected by law, and one of the country's most popular sights, but that hasn't stopped people from slowly but steadily destroying it.

    Illegal woodcutting in the heart of the Monarch Butterfly Biosphere Reserve has been a longstanding problem, but criminals are rarely brought to justice. They are often set free after paying some money.

    Just last month, an even greater threat rose in Michoacan's butterfly home.  The country's largest mining corporation gained the right to reopen an old mine in the heart of the monarch reserve. Experts believe that if the mine is reopened, it will likely spell the end of this magical place.

    And as if all this wasn't bad enough, the increasing use of herbicides（除草剂） in the American corn belt has led to the decrease of  a plant which is essential to the monarchs' development from egg into butterfly.

    People who have lost the ability to understand or use words due to brain damage are called aphasics（失语症患者）.Such patients can be extremely good at something else.From the changing expressions on speakers' faces and the tones of their voices,they can tell lies from truths.

    Doctors studying the human brain have given a number of examples of this amazing power of aphasics.Some have even compared this power to that of a dog with an ability to find out the drugs hidden in the baggage.

    Recently,scientists carried out tests to see if all that was said about aphasics was true.They studied a mixed group of people.Some were normal;others were aphasics.It was proved that the aphasics were far ahead of the normal people in recognizing false speeches—in most cases,the normal people were fooled by words,but the aphasics were not.

    Some years ago,Dr.Oliver Sacks wrote in his book about his experiences with aphasics.He mentioned a particular case in a hospital.Some aphasics were watching the president giving a speech on TV.Since the president had been an actor earlier,making a good speech was no problem for him.He was trying to put his feelings into every word of his speech.

    But his way of speaking had the opposite effect on the patients.They didn't seem to believe him.Instead,they burst into laughter.The aphasics knew that the president did not mean a word of what he was saying.He was lying!

    Many doctors see aphasics as people who are not completely normal because they lack the ability to understand words.However,according to Dr.Sacks,they are more gifted than normal people.Normal people may get carried away by words.Aphasics seem to understand human expressions better,though they cannot understand words.

Young Adult Groups

    Around the World in 80 Books — 9,186 members.

    If you love exploring the world through books, you have come to the right place! It all started as a challenge on TNBBC in 2009, and now we have our own group! Challenge participation is not a requirement of joining. Anyone who loves reading books is welcome.

    Website: http://www.worldinbooks.com

    Rules: Respect each other's opinions and have fun!

    Readers That Love Giveaways – 734 members

    This group is for readers that enjoy entering giveaways and finding freebies!

    Follow us for the newest bargain, discounted, and free e-books, as well as new releases and book recommendations.

    Website: http://www .fireandicebooktours.com

    Rules: Please share your items in the appropriate folders!

    Book Loving Kiwis – 706 members

    A group for New Zealand book lovers (and authors) and lovers of New Zealand books (and books in general). A place to share what we're reading, introduce books we have written, and discuss and recommend books. Please recommend us to your friends.

    Website: http://www.kiwisbook.com

    Rules: Enjoy reading! Respect all group members and their opinions.

    A Book and a Cappuccino – 77 members

    This group is for anyone who likes to read at their own pace. It does not matter how much or how little you read. It's just a friendly place to discuss what you're reading and to get ideas for your next read. You can participate as much or as little as you like.

Website: http://www.bookandcappuccino.com

    Rules: Be respectful to all. Everyone has a right to share opinions.

    "I'm the smartest kid in class." We all want our kids to be self-confident, but unrealistic perception(认知) of their academic abilities, a new study finds, damage a child's relationship with others in the classroom: The more one student feels unrealistically superior(更好的) to another, the less the two students like each other.

Katrin Rentzsch of Bamberg University in Germany first became interested in the effects of such self-perception when she was studying how people became labeled as nerds(书呆子). "I really got interested in the question of whether it's OK to boast(吹嘘) about achievements," she says.

    This line of thinking led her towards something psychologists call "self-enhancement" －when a person feels unrealistically superior to someone else. So Rentzsch and her colleague Michela Schroder-Abe decided to take a closer look at how such self-enhancement affects relationships, so they turned to the eighth-grade classroom, somewhere they could measure differences between actual academic performance, and social popularity. The 358 students came from 20 eighth-grade classes in schools in southeast Germany.

    The researchers asked each student to rate their classmates, in terms of their likability and of their feelings of academic superiority. They then compared those ratings with the students' grades in math, physics, German and English. Importantly, they conducted the analysis at two different social levels: "habitual"－the way people act in general, and "relationship"－the way someone acts around a specific individual.

    In future work, Rentzsch would like to look at these effects on adults, perhaps specifically in team work. She's also interested in self-enhancement beyond academic achievements, for example physical attractiveness. And another question to explore is why students overestimate their academic abilities. Perhaps it is because of too much praise from their parents or teachers.

    What would you like to be when you grow up? A teacher? A doctor? An astronaut? What do you need to do to achieve your dream job?

    Perhaps you think that studying well and then going on to work hard will get you the successful career you want. We are constantly taught that our hard work will eventually pay off.

    But a government survey has shown that hard work is not the only thing that will help you to move up the ladder. Two thirds of people believe that who you know matters more than what you know when it comes to social activity. So are the connections that you have more important than your education?

    Seventy-six percent of the people in the survey believed that family background is important in influencing your chances of success. They believe that if you are privileged from birth, you are more likely to have a successful career, especially if your family is wealthy.

    Even if you don't have a privileged background, the people you know can still make a difference to your career. Networking is a skill which is encouraged by many career advisers. Some companies run networking workshops to try and encourage staff to meet other people, to communicate and build relationships. It's a valuable skill.

    But the survey also showed something quite interesting. Although most people believed that networks are more important than education, many people put their own career success down to talent, rather than background. 41% of the people said that their parents' income had influenced their life, but at the same time, another 41% believed that they had achieved their own success.

    So which is more important, what you know or who you know? It seems that by working hard and making lots of connections, the answer may be that both are very important.

    Two graduates from Cambridge University in the United Kingdom found themselves about to graduate, yet with loans to pay off. The pair decided to begin a strange, year-long project to battle their debt.

    The men, Ross Harper and Edward Moyse, set up the website BuyMyFace.com last October as a way to get rid of the £50, 000 they shared as student loans. The idea behind the project was to earn money by selling their faces as advertising space every day for a year. Each day, they advertise a different business by painting the brand's name or logo onto their faces and upload the pictures to the homepage of BuyMyFace.com, adding a link to the advertiser's website and including a short piece of text about it. After they paint their faces and publish them on the website, Harper and Moyse go out to highly populated areas such as music festivals and theme parks to maximize their faces' exposure. They hope more people will pay attention to the advertisements on their faces.

    At this time, Harper and Moyse have advertised their faces for over four months without skipping a day and they're more than halfway to their goal. Though they first started charging a minimum of about £1.60 per company, the prices have risen as their popularity increases. For advertising space during the rest of April, they range between £250 and £750. Terri L. Rittenburg, associate professor of marketing at the University of Wyoming, said that she had heard of people tattooing (纹身) logos on themselves before, but this idea is much better. According to her, at first the idea would be new and unusual and attract attention. People are interested in this particular style of advertisement and would like to try what they advertise. But she is unsure how long it would last.

    At least for now, companies that have bought Harper and Moyse's faces have written positive comments on the pair's website. "We had a three percent increase in website traffic on the very day and for two days more afterwards," said one of the companies.