If you see a group of people dancing and singing on the street or in the railway station,  you don't need to feel surprised．They are a flash mob （快闪族）, which is a group of people who come together suddenly in a public place, do something unusual for a brief period of time,  and then quickly break up．They are usually organized with the help of the Internet or other digital communication network．At a predetermined time, they gather and perform some  distractions（消遣） such as waving their hands and exchanging books, Then, they quickly break up before the police can arrive．Using mobile phones, the flash mob can change its location if the first one has been replaced for any reason．

    Bill Lasik, senior editor of Harper's Magazine, organized the first flash mob in Manhattan in May 2003 and the first successful flash mob came together on June 3, 2003 - after the first try was foiled at Macy's department store．Lasik claimed that the activity was designed to make fun of hipsters （起时髦的人）, and call attention to the cultural atmosphere．

    Flash mob gatherings can sometimes shock people．Such an activity might seem amusing and untrue, but it also might frighten people who are not aware of what is taking place．Undoubtedly, flash mobs can serve as good political tools in any direction．They also have great economic potential, such as using flash mobs to advertise a product．

    The flash mob is now becoming more and more popular．People use it to do many things．For example, in 2009, Michael Jackson's fans took part in a flash mob to remember him．Hundreds of his fans gathered singing and dancing Michael's famous song "Beat It" together．Flash mobs give people from all walks of life an opportunity to come together to create a memory．

    Below is a selection about Guinness（吉尼斯） World Records.

    Top 6 Unusual Guinness World Records

    ♦ Fastest 100 m running on all fours

    The 2008 Guinness World Records Day was, according to CWR, their biggest day of record-breaking ever, I- h more than 290.000 people taking put in record attempts in 15 different countries. Kenichi Ito's record attempt was port of this special day. He is just another example of Japanese with "super powers". His "super power" is to run with great speed on all fours. Kenichi Ito ran 100 m on all fours in 18.58 seconds. The Japanese set this record at Setagaya Kuritsu Sogo Undojyo, Tokyo, in 2008.

    ♦ Most people inside a soap bubble

    The Discovery Science Center in Santa Ana, Califomia celebrated this year the 15th anniversary of the Bubble (泡泡) Festival. A bubble's math principles and science were presented and demonstrated at the three-week-long exhibition. The intriguing Bubble Show was also part of the program. Fan Yang and Deni Yang impressed the audience with their awesome skills for bubble making. The Yang family cooperated with the Discovery Science Center to set a new Guinness World Record for mow people inside a scup bubble and they succeeded.

    The family that has been working with soap bubbles for 27 years created a huge soap bubble and got 118 people inside it. The record was set or. April 4, 2011.

    ♦ Longest ears on a dog

       A bloodhound from Illinois has the longest ears ever measured a dog. The right ear is 13.75 inches long and the left one 13.5 inches. The dog named Tigger earned this title in 2004 and is owned by Christina and Bryan Flessner.

Mr. Jeffries is the previous record holder of this title. Each of his ears measured approximately 11. 5 inches long. His grandfather used to hold this amazing world record, but when he died Mr.Jeffries look over.

    ♦ Most living generations

    Did you ever wonder what is the Guinness World Record for most living generation in one family? Seven is the answer.

    The ultimate authority on record-breaking mentions on the website that the youngest great-great- great-great grandparent of this family was Augusta Bung "aged 109 years 97 days, followed by her daughter aged 89, her granddaughter aged 70, her great grand-daughter aged 52, her great-great grand-daughter aged 33 and her great-great-great granddaughter aged 15 on the birth of her great-great-great-great grandson on January 21, 1989".

    ♦ Most T shirts worn at once

Believe it or not, there is a record also for this category. Krunoslav Budiseli set a new world record on May 22, 2010 for wearing 245 T-shirts at the same time. The nun from Croatia was officially recognized as the new record bolder by Guinness World Records after he managed to put on 245 different T-shirts in 1ess than two hours. . The T-shirts weighted 68 KG and Budiseli said he began struggling around T-shirt No. 120. He dethroned the Swedish Guinness record holder who wore 238 T-shirts.

    ♦Heaviest pumpkin

    Guinness World Records confirmed on October 9. 2010 that a gigantic pumpkin （南瓜） grown in Wisconcin was officially the world's heaviest. It weighed 1,810 pounds 8 ounces and was unveiled by Chris Stevens at the Stillwater Harvest Festival in Minnesota. Stevens' pumpkin was 85 pounds Javier than the previous re I, another huge pumpkin grown in Ohio. The proud farmer said his secret is a precise of rain, cow mature, good soil, sea grass and fish emulsion. Some of the world's heaviest pumpkins, including the record bolder, were on public display at the Bronx Botanical Gardens in New Yost for a dozen days.

    We have to admit that many cities around the world today are heavily polluted. Careless methods of production and lack of consumer demand for environment friendly products have actually contributed to the pollution problem. One result is that millions of tons of glass, paper, plastic, and metal containers are produced and these are difficult to get rid of.

    However, today, more and more consumers are choosing “green” and demanding that the products they buy should be safe for the environment. Before they take action to buy a product, they ask questions like these “Will this shampoo add damage to the environment?” “Can this metal container be reused or can it only be used once?”

    A recent study showed that two out of five adults now take the environmental safety of a product into account before they buy it. This means that companies must now adjust the way they make and sell their products to make sure that they are “green” that is, friendly to the environment

    Only a few years ago, it was impossible to find green products in supermarkets, but now there are hundreds of them advocating green. In addition, some supermarket products carry labels (标签) to show that the product is green. Some companies have adopted the manufacturing (生产) of clean and safe products as their main selling point and emphasize it in their advertising.

    The concern for a safer and cleaner environment is making companies rethink how they do business. No longer will the public accept the old attitude of “Buy it, use it, throw it away, and forget it.” The public pressure is on, and gradually business is cleaning up its act.

The Truth About the Environment

    For many environmentalists, the world seems to be getting worse. They have developed a hit-list of our main fears: that natural resources are running out, that the population is ever growing, leaving less and less to eat, that species are becoming disappeared in huge numbers, and that the planet's air and water are becoming ever more polluted.

    But a quick look at the facts shows a different picture. First, energy and other natural resources have become more abundant, not less so. Second, more food is now produced per head of the world's population than at any time in history. Fewer people are starving. Third, although species are indeed becoming disappeared, only about 0.7% of them are dying out in the next 50 years, not 25-50%, as has so often been predicted. And finally, most forms of environmental pollution either appear to have been best cured not by limiting economic growth, but by accelerating it.

    Yet public opinion surveys suggest that many people hold the belief that environmental standards are declining and four factors seem to cause this gap between what they know and what the reality is.

    One is the unbalanced budget for scientific research. Scientific funding goes mainly to areas with many problems. That may be wise policy, but it will also create an impression that many more potential problems exist than is the case.

    Secondly, environmental groups need to be noticed by the mass media. They also need to keep the money rolling in. Understandably, perhaps, they sometimes overstate their arguments. In 1997, for example, the World Wide Fund for Nature issued a press release entitled: „Two thirds of the world's forests lost forever'. The truth turns out to be nearer 20%.

    A third source of confusion is the attitude of the media. People are extremely more curious about bad news than good. Newspapers and broadcasters are there to provide what the public wants: That, however, can lead to significant misunderstanding. An example was that America came across EI Nino(厄尔尼诺) in 1997 and 1998. This climatic phenomenon was accused of breaking tourism, causing allergies, melting the ski-slopes, and causing 22 deaths. However, according to an article in the Bulletin of the American Meteorological Society, the damage was estimated at $4 billion but the benefits amounted to some $19 billion.

    The fourth factor is poor individual knowledge. People worry that the endless rise in the amount of things everyone throws away will cause the world to run out of places to dispose of waste. Yet, even if America's trash output continues to rise as it has done in the past, and even if the American population doubles by 2100, all the rubbish America produces through the entire 21st century will still take up only one 12,000th of the area of the entire United States.

    It is extremely important that we look at the facts if we want to make the best possible decisions for the future. It may be costly to be overly optimistic, but more costly still to be too pessimistic.

    When my father married my mother in 1943, he gave my mother a 1937 crown coin and told her to keep it in the back of her purse and not to spend it. This would mean that she always felt that she was protected and would always have money if she really needed it.

    When I was married in 1970, my husband, who had heard this story, obtained a 1937 crown coin for me and I have always kept it in my wallet, and I have always had enough for my needs.

    A friend recently fell on hard times, partly through external (外部的) circumstances and partly through poor planning. Friends and I have loaned her money, paid her bills, given her food, and even tried to teach her budget techniques, but none of them has been a solution. She has just slipped deeper and deeper into financial trouble and depression.

    Last week she looked pale and unwell, very depressed and hopeless, very sad for a friend to see and I then thought about how the crown coin, a physical reminder of another's care and love had protected me, so I went to the bank for a $ 100 dollar-bill.

    I told my friend the story and asked her to keep the $ 100 in the back of her wallet. It turned out that she didn't have a wallet, so she put the money in a little pencil case where she kept her coins. She immediately felt better—"I feel rich, and thank you for being a good friend," she said, and we were both a bit teary.

    I went home and remembered a little wallet I had that I'd never used, and thought, "I'll give that to my friend." I opened it, and inside, found $ 100.

    For many families, a night at the ballpark is a treat. But it can be a terrible experience for those with autistic(自闭症的)children, who are sensitive to light and noise and usually become upset and scared.

    For these families, fear of how their child will react to new situations­and how others will react to them-keeps them from gaining everyday experiences others get to have.

    Dr. Wendy Ross was heartbroken to see that. The pediatrician(儿科医生)in Philadelphia also knew that separation from the community didn't serve her patients well in the long run.

    "If kids are not in the community, building their skills from very young ages, then there's no reason to expect them to be independent one day," Ross said. "It's a social disability. It needs to be addressed in a social setting."

    So in 2007, Ross set out to do just that. Today, her nonprofit, Autism Inclusion Resources, helps families affected by autism deal with challenging social situations, such as sporting events, airport travel and museum visits.

    Many Major League Baseball teams hold annual 44autism awareness nights", when they take temporary measures such as lowering the volume (音量)on the public address system. But Ross wanted to do more. "You can't turn down the volume of the world," Ross said. "It's nice to do it for one night, but our goal is for families to be able to go to a game on any night."

    To that end, Ross partnered with the Philadelphia Phillies to develop a creative program.

    She armed all the Phillies players and game-day staff with knowledge about autism and how to interact with individuals who have the disorder. Each family is also provided a clinician at the game who gives additional support if problems arise. She also helps prepare the families for the event.

    Ross has also found her airport travel program to be successful for families. Using the same principles, she trains airline and security staff at major airports and then guides families through the travel experience, including checking in, going through security and boarding a plane.

    Ross hopes that the tools she gives families can help them explore other settings on their own. "We really see it as a stepping stone to a brighter future," she said.