On Sept. 15, TripAdvisor, one of the world's largest travel review websites, named the world's top 25 museums in its Travelers' Choice Award according to the reviews and opinions of travelers worldwide. Now let's take a look at the top four museums which are ranked as follows by the popularity around the world.

    Metropolitan Museum of Art, New York City

    It is the largest museum in the Western Hemisphere, with a collection of 2 million items from more than 5,000 years of world culture. The iconic museum includes important collections from ancient Egypt and medieval Europe as well as ancient Greece and Rome. Here, visitors can get lost in different centuries: They can see the Temple of Dendur from early Egypt, Dutch painter Vincent van Gogh's Wheatfield With Cypresses an US pop Andy Warhol's Souper Dress, all in one place.

    Muse d'Orsay, Paris

    Located in the center of Paris on the bank of the River Seine, the Musee d'Orsay houses the world's most amazing collections of impressionist and post-impressionist art. It offers the chance to view major works from greats like Van Gogh and Claude Monet. The museum is famous for being home to Starry Night over the Rhone, an oil painting by Van Gogh that is often praised along with his masterpiece Starry Night.

    Art Institute of Chicago, Illinois

    It was named the world's best museum in 2014. The world-famous Windy City museum houses nearly 300,000 works, including one of the largest collections of modern art, including pieces such as Spanish painter Pablo Picasso's The Old Guitarist, US artist Georgia O'Keeffe's Black Cross and French artist Henri Matisse's Bathers by a River. A TripAdvisor reviewer commented, “No matter how many times I visit, it never gets old. Paintings from every era, works from every great artist.”

    Museo Nacional del Prado, Madrid

    Nowhere is able to present the entire history of Spanish art like the Museo Nacional del Prado.

    Here, visitors can enjoy a detailed view of the Spanish school of the Modem Age. Outstanding masterpieces by artists such as Diego Velazquez, Francisco Goya and Joaquiin Sorolla make up an internationally-famous collection. The Italian school is another highlight of the museum's collection, as it includes the 15^th century masterpieces such as The Annunciation by Fra Angelico, The Death of the Virgin by Andrea Mantegna and The Dead Christ Supported by Angels by Antonello da Messina.

    Those who are in love really know each other's thoughts and can see into one another's ice cream bowl.This truth became so clear to me the other day.

    At about 11:00 a.m.,my husband Gary called from work to see what was up at home."Oh nothing,"I said,"just having a little early lunch."Then he said,"So how's the coffee ice cream I bought?"I could almost "hear" him smiling.

    "What?"I was stunned.How in the world did he know I was eating ice cream?I never eat the ice cream, especially in the morning.Besides,he knows that I had been trying to diet again.However,I could hardly hide the laughter in my voice as I calmly asked,"Why would you think I'm eating coffee ice cream?"

    Gary said,"Uh...first,you said 'Just having a little early lunch' in a guilty,high voice.Second,your tongue must be rather cold because your words were a bit slow."What he said made me laugh out loud."The other thing is,I noticed you left some coffee ice cream untouched last night.That was like me hiding some cigarettes in the corner to enjoy later."

    We laughed long and hard together before he asked me gently,"What happened?Er...something must have happened to make you eat ice cream before lunch."

    Suddenly,I felt a rush of love for the man on the other end of the line.He knew me well-cared enough to find out what was bothering me,and trusted me enough to help me laugh at myself.

    When you're on the go, your best friend and resource can be your phone. In the age of smart phones, apps are like guiding stars: They can point you in the right direction for a hotel, list expenses, send postcards, and much more. When used together, these apps can be the basic travel tool, placing a wealth of information at your fingertips no matter where you are on the planet. U.S. NewsTravel has picked the essential travel apps, known for their utility and reliability. Best of all, they cost absolutely nothing.

Trip It

    Your Personal Travel Agent

    Be your own travel agent and plan every detail of your trip—from car rental to accommodating restaurants—with Trip It. You can make travel schedule by hand, or simply forward the email confirmations of your flight, rental car, train tickets, and hotels to plans.

Weather Free

    Your Go-To Meteorologist(气象学者)

    Stop trying to explain the weather forecast on the evening news (particularly when it's in a foreign language). The Weather Free app informs you (in English) of the climate in various locations. It features the local weather, and other key factors that will inform your decision about what to wear before stepping outside.

Goby

    Your Event Guru

    When you're in a foreign city, you sometimes look around and ask: Where are all the people? Goby has the answer. This app pinpoints the neighborhood hot spots (including museums, hotels, eateries, and more) in your neighborhood. But its true value comes in finding nearby events. You'll discover concerts, plays, and more right around the corner.

    Qing-Feng Steamed Dumpling Shop. Daniang Dumpling. McDonald's. What do these companies have in common?

    Well, besides all being fast food chains, their logos are all red. And it's not a coincidence. Color is one of the many that companies use to connect with customers. And if fast food wasn't hard enough, those red logos might make it even harder to ignore.

    The average human can see ten million colors, but red is special. It's one of the first colors our ancient ancestors thought important enough to name. Early human languages were uncolorful. There were words for “black” and “white” and “red” but not much else.

    As a result, we have a deeper connection to red than any other color and we react to it in certain ways that actually play to fast food companies' advantage. For starters, researchers have found that red can cause a sense of urgency. On top of that, it also has an ability to whet (刺激) our appetites. And when you pair those two together, you've got the perfect recipe to attract hungry customers who want food, fast.

    So the red logo isn't just a welcoming sign. It's a seduction (诱惑) for your brain. Now, it's unclear why red makes us feel this way. But perhaps it has something to do with where the word comes from. Many ancient languages first named red from their word for “blood”. But red's bloody beginning has transformed. During medieval times, for example, red was worn by royals as a status symbol. And today, brides in many parts of India are married in red dress.

    In fact, red is one of the few colors today that cultures all over the world view positively. And it's no wonder companies attach so much importance to their logos. After all, we're a visual species. Despite having five senses, 80% of the information our brains process on a daily basis comes from our eyes. And according to marketing company WebPageFX, nearly 85% of consumers say the main reason they choose one product over the other is color.

    Just think what McDonald's would look like in blue, green, or pink! It's just not the same, right?

    Tokyo is one of those places that you can love and hate at the same time.

    In Tokyo there are always too many people in the places where I want to be. Of course there are too many cars. The Japanese drive very fast, but in Tokyo they often spend a long time in traffic jams. Tokyo is not different from London, Paris and New York in that. It is different when one wants to walk.

    At certain times of the day there are a lot of people on foot in London's Oxford Street. But the streets near the Ginze in Tokyo always have a lot of people on foot， and sometimes it is really difficult to walk. People are very polite; there are just too many of them.

    The worst time to be in the street is at 11:30 at night. That is when the nightclubs are closing and everybody wants to go home. There are 35,000 nightclubs in Tokyo, and you do not often see one that is empty.

    During the day，most people travel to and from work by train. Tokyo people buy six million train tickets every day. At most stations, trains arrive every two or three minutes, but at certain hours there do not seem to be enough trains. Although they are usually crowded, Japanese trains are very good. They always leave and arrive on time. On a London train you would see everybody reading a newspaper. In Tokyo trains everybody in a seat seems to be asleep, whether his journey is long or short.

    In Tokyo, I stood outside the station for five minutes. Three fire-engines raced past on the way to one of the many fires that Tokyo has every day. Tokyo has so many surprises that none of them can really surprise me now.

Would a person born blind, who has learned to distinguish objects by touch, be able to recognize them purely by sight if he regained the ability to see? The question, known as Mołyneux's problem, is about whether the human mind has a built-in concept of shapes that is so inborn that a blind person could immediately recognize an object with restored vision. Alternatively, the concepts of shapes are not inborn but have to be learned by exploring an object through sight, touch and other senses.

After their attempt to test it in blind children failed, Lars Chittka of Queen Mary University of London and his team carried out another experiment on bumblebees. To test whether bumblebees can form an internal representation of objects, they first trained the insects to distinguish globes from cubes using a sugar reward. The bees were first trained in the light, where they could see but not touch the objects. Then they were tested in the dark, where they could touch but not see the items. The researchers found that the insects spent more time in contact with the shape they had been trained to associate with the sugar reward, even though they had to rely on touch rather than sight to distinguish the objects.

The researchers also did the opposite test with untrained bumblebees, first teaching them with rewards in the dark and then testing them in the light. Again, the bees were able to recognize the shape associated with the sugar reward, though they had to rely on sight rather than touch in the test. In short, bees have solved Molyneux's problem because the fact suggests that they can picture object features and access them through sight or touch.

However, some experts express their warnings against the result. Jonathan Birch, a philosopher of science, cautions that the bees may have had prior experience associating visual and tactile (触觉) information about straight edges and curved surfaces in their nests.