For a long time, the traditional method of identifying liars was to watch their body language, including facial expressions.

    What if the person appears to be nervous? Is the person unable to look me in the eye? Is he or she look around the room? What about other nervous movements, such as fidgeting（坐立不安）or shifting from side to side? Many people—from parents to police officers and airport security personnel—depend on this method. But does a person's body and face reveal the truth? Not according to a new study.

    Talking, it seems, is the best way to smoke out a liar. That is what researchers in the United Kingdom found out recently. Their investigation took place at one place where lying can get you into big trouble—an airport.

    The researchers asked volunteers to pretend they were real passengers and then lie to airport security agents. Some of the agents used spoke conversation-based methods to question these make-believe passengers. Others depended instead on the person's body language, like lack of eye contact and showing signs of nervousness. The agents talking with the passengers were 20 times more likely to catch the liars. The study found that these conversation-based techniques can help you recognize when a person is lying to you. Like many methods, this conversation method has a name. It is called Controlled Cognitive Engagement or CCE, for short.

    The British government partly financed this study. The American Psychological (APA) published the findings. Body language cannot be trusted. Using body language and facial expressions to catch someone in a lie is really hard. And it only works, seemingly, by chance.

    Thomas Ormerod is the head of the School of Psychology at the University of Sussex in England. On the APA website, he reported that the “suspicious-signs method”—or using body language—“almost completely fails” in finding lies.

    More than 10 years ago, it was difficult to buy a tasty pineapple.The fruits that made it to the UK were green on the outside and, more often than not,hard with an unpleasant taste within.Then in 1966,the Del Monte Gold pineapple produced in Hawaii first hit our shelves.

    The new type of pineapple looked more yellowy-gold than green.It was slightly softer on the outside and had a lot of juice inside.But the most important thing about this new type of pineapple was that it was twice as sweet as the hit-and-miss pineapples we had known. In no time, the Del Monte Gold took the market by storm, rapidly becoming the world's best-selling pineapple variety, and delivering natural levels of sweetness in the mouth,up until then only found in tinned pineapple.

    In nutrition it was all good news too.This nice tasting pineapple contained four times more vitamin C than the old green variety.Nutritionists said that it was not only full of vitamins, but also good against some diseases.People were understandably eager to be able to buy this wonderful fruit.The new type of pineapple was selling fast9 and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.

    Seeing the growing market for its winning pineapple, Del Monte tried to keep market to itself.But other fruit companies developed similar pineapples.Del Monte turned to law for help, but failed. Those companies argued successfully that Del Monte's attempts to keep the golden pineapple for itself were just a way to knock them out the market.

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    While beach vacations may be a great way to take your mind off work, lakes surrounded by mountains make for an even grander experience. If you are looking for come peace on your vacation, we have some recommendations for you in the Caucasus (高加索).

Lake Sevan

    Lake Sevan is situated in the central part of Armenia, in the Gegharkumk province. It is the largest lake in Armenia, located 6,200ft above sea level. Along the lake shore, there are various accommodations such as resorts and hotels with plenty of activities to partake in such as windsurfing, swimming and sunbathing. While there, do not forget to visit one of the famous cultural monuments, the Sevanavank Monastery, and it offers a great view of the lake as well.

Lake Paravani

    Lake Paravani, located at 6,801ft above sea level, is in the south of Georgia, near the Javakheti plateau. At this level, altitude sickness can occur and it is a good idea to be prepared to adapt to it properly, or bring medication for altitude sickness. Being a volcanic lake makes for a more interesting: experience. The lake is best known for fishing. Do not come home during the winter months when the lake freezes.

Lake Cildir

    Lake Cildir is located in the Ardahan province. East Turkey, near the borders of Georgia and Armenia. It is the second largest freshwater lake of Eastern Turkey, and many tourists are not aware of this beautiful attraction. Lake Cildir is surrounded by mountains of the Caucasus. The lake freezes during late November. If the winter is not extremely cold, you can try some lake activities like ice skating and ice fishing.

Lake Van

    Lake Van is the must visit of all lakes in this list. The largest lake in Turkey. Lake Van is located on the eastern shore of Turkey and is also the most accessible lake here. It's situated at 5,380ft above sea level, and unique to lakes around the world, the water is high in salt content.

    Many Americans think of driverless cars as a futuristic technology that will revolutionize travel in cities and along state highways. But recent experiments are proving that autonomous vehicles also have the potential to improve the quality of life for millions of Americans underserved by traditional modes of transportation, such as the elderly and disabled, so long as lawmakers make smart policies that pave the way for innovation.

    A retirement community in San Jose, Calif. , which has been transformed by a small fleet of driverless taxis, shows the potential of self-driving cars to transform people's lives. Built by a tech start-up called Voyage, the modified Ford Fusions are currently limited to a two-mile road, but residents are already having the benefits of these autonomous vehicles, which allow them to participate in social activities they would otherwise be unable to enjoy simply because they could not get to them.

    When the trial run finally expands to 15 miles of road, these residents—whose average age is 76—will also have a convenient and reliable new way to appointments. As these cars continue to serve residents there, it is easy to understand why California is moving to simplify regulations for the industry.

    In Michigan, forward-thinking policies have the potential to unlock other hidden benefits of autonomous vehicles, especially for those with physical disabilities. The Michigan Disability Rights Coalition has strongly advocated for the development of this technology, saying that it could give people with disabilities greater opportunities in the workforce and enable them to lead more fulfilling, independent lives.

    Many recognize that autonomous vehicles will be the future of transportation, but it is too often overlooked that this future cannot arrive fast enough for millions of Americans who are forced to depend on others for day-to-day travel. The policymakers should follow the lead of places like California and Michigan, and pass rules and regulations to unlock these hidden benefits of driverless cars.

    Listed here are four of the thousands of impressive museums around the world.

    The Guggenheim Museum Bilbao in Bilbao, Spain

    Built in 1997, the Guggenheim Museum Bilbao is one of the newest in the world. It has transformed the industrial city of Bilbao into a travelers' desired destination. The beautiful architecture of the museum has provided a dramatic background for movies and commercials.

    The Louvre in Paris, France

    Probably the most famous Louvre also holds the most famous painting in the world, the "Mona Lisa" by Leonardo da Vinci. Crowds can be found any day surrounding the small, but mysterious painting of the smiling woman. But, the Louvre is much more than a home to the "Mona Lisa". The Louvre is visited by more people each year than any other museum in the world.

    The Barnes Foundation in Philadelphia, America

    Just opened in its new downtown location in 2012, the Barnes Foundation is "unique" in that it is a completely reproduced display from one man's private collection. Dr. Albert C. Barnes started collecting art in the early 20th century and collected, among others, the largest number of original Renoir paintings in the world.

    The Uffizi Gallery in Florence, Italy

    Walking on the marbled floors feels like stepping back in time. The building itself is a beautiful palace—like structure with frescoes(湿壁画) decorating the ceilings and walls. Viewers are bowled over(印象深刻) by the works by Botticelli, such as "The Birth of Venus". Classic artworks from nearly 1, 000 years ago describe religious events of the time.

Facial expressions carry meaning that is determined by situations and relationships. For example, in American culture the smile is in general an expression of pleasure. Yet it also has other uses. A woman's smile at a police officer does not carry the same meaning as the smile she gives to a young child. A smile may show love or politeness. It can also hide true feelings. It often causes confusion across cultures. For example, many people in Russia consider smiling at strangers in public to be unusual and even improper. Yet many Americans smile freely at strangers in public places (although this is less common in big cities). Some Russians believe that Americans smile in the wrong places; some Americans believe that Russians don't smile enough. In Southeast Asian cultures, a smile is frequently used to cover painful feelings. Vietnamese people may tell a sad story but end the story with a smile.

Our faces show emotions, but we should not attempt to "read" people from another culture as we would "read" someone from our own culture. The fact that members of one culture do not express their emotions as openly as members of another culture, but it does not mean that they do not experience emotions. Rather, there are cultural differences in the amount of facial expressiveness permitted. For example, in public and in formal situations many Japanese do not show their emotions as freely as Americans do. When with friends, Japanese and Americans seem to show their emotions similarly.

It is difficult to conclude about Americans and facial expressiveness because of personal and cultural differences in the United States. People from certain cultural backgrounds in the United States seem to be more facially expressive than others. The key is to try not to judge people whose ways of showing emotion are different. If we judge according to our own cultural habits, we may make the mistake of "reading" the other person incorrectly.