Have you ever considered why you begin yawning too when you see someone yawn? 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 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, 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 research 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 even more information regarding how humans behave and interact. Indeed, it may turn out to be the equivalent (相等物）for neuroscience 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.

It's true to say that technology makes our lives easier. However, increasingly scientists are saying that we need to give ourselves a break—--otherwise we put ourselves at risk(风险) of developing hundreds of health problems. Over the summer the days are longer and sunnier. Why not put this free time to good use and do something away from technology?

    You could learn a new skill. There are hundreds of possibilities: cooking, a musical instrument or a new sport. Haven't you always wanted to learn how to knit(编织)? You could use your free time to practice these new things, which might lead to an exciting opportunity in the future.

    If you just want to relax, why not head to a beach? Take along your favorite book and relax on the sand, or go for a walk along the coastline. If you don't live near a beach, you could go to your local park. Why not have a picnic, or try to explore some of the local wildlife? You could even get involved in the latest craze(狂热): adult coloring books! Coloring is a surprising thing to help you relax, and it can be a nice way to escape from the stress of modern life!

    Whatever you choose to do, try something new! You might surprise yourself and find a hidden gift within you; you might make new friends along the way. Next time you find yourself changing TV channels(频道) from one to another without a clear purpose, think about what else you could spend your time doing.

    YOUTR KIDS ARE AMAZING -especially compared with everybody else s (who seem to cry all the time). How do you show your love for your kids this holiday season? With toys that are smooth and colorful, interactive and exciting. And with ones that have educational value - because you are the boss.

FLAX ART HOSPITAL PUZZLE AND PLAY SET

    Here is a toy that doesn't need power, and the kids have to put it together themselves. This 50*piece-puzzle set is made of soft-edged hardwood and makes a complete hospital, with an X-ray room. It also includes eight patients, a car and a driver. $135; flaxart.com.

    TINY LOVE ACTIVITY BALL

    Sure, it's cool, but this colorful baby toy also develops problem solving and motor skills. It has a head and legs, a magnetic (磁铁) hand and a tail. Suitable for little ones from 6-36 months. $19.95; tiny-love.com.

    ROBOSAPIEN

    This small, remote-control robot is really powerful. It performs 67 preprogrammed functions, including throwing, kicking, picking up and dancing. You can even program your own function - which, sadly, does not include doing windows. $ 99; robosapienonline.com.

    MINI PEDAL CAR

    Want a mini Cooper but can't fit the family inside? Get one for the kids. They can jump into this mini car, which comes in hot orange with a single adjustable seat, and ride away. But it could spoil them for that used car they'll be driving when they turn 16. For ages 3 to 5. $ 189; mlnicar.com (click on “gear up” then “mini motoring gear”）

    The Taj Mahal, in Agra, India, is one of the most brilliant structures on Earth. It is nearly 400 years old. Emperor Shah Jahan had it built in memory of his wife. It took about 20 years to build the monument. Some 20,000 workers and 1,000 elephants helped get the job done. Today, the Taj Mahal is not just a symbol of cultural history. It's also India's most famous tourist attraction. About 8 million people visit it each year.

    But pollution is turning the white marble monument shades of green, yellow, and brown. The Taj Mahal stands on the polluted Yamuna River. Insects are attracted to the dirty water. They leave greenish droppings on the building. Air pollution is also a big threat. Factories and cars release pollution into the air. It sticks to the Taj Mahal's suidEace. In the 1990s, India's Supreme Court ordered hundreds of factories near the monument to close. Also, car and bus traffic was restricted. From time to time, workers clean the Taj Mahal. But doing so is difficult, expensive, and time-consuming. And it doesn't prevent the discoloration.

    On July 11, India's Supreme Court gave the city of Agra a warning: "Either you destroy the Taj Mahal or you restore it". Authorities in the city submitted a draft of an action plan on July 24. It suggests banning plastics and construction from the area. It also calls for the closing of more factories.

    "In order to preserve the Taj Mahal, people must come together to work toward a solution. There needs to be positive pressure on people to act. We need to act immediately," Sachchida Tripathi says. He worked on a 2014 study of pollution at the Taj Mahal. "We are trying," he adds, "but we need to try more."

    In our twenties, we find it funny when we can't remember our neighbor's cat's name or a handsome actor who starred in a famous movie. In our thirties, we jokingly call it "brain freeze". In our forties, we laugh it off as a" senior moment" and follow up with one of these old age jokes. But the reality is that there comes a point when being forgetful stops being funny and starts to seem a bit dreadful. You think, "Am I losing it？"Or worse, "Is this a sign of Alzheimer's disease（老年痴呆症）？"

    Well, don't worry. The fact that you recognize your own forgetfulness may be a very good sign, at least in terms of the possibility of your developing Alzheimer's disease（AD）. The researchers in a new study show that it's not forgetfulness but not being aware that we're forgetful that we should fear.

    The researchers began with the assumption that one common feature of Alzheimer's dis-ease is a damaged awareness of illness. And they wanted to prove their theory that the lack of awareness can be used to predict whether someone with" mild cognitive（认知的）damage" will progress to full-on AD. For the study, "mild cognitive damage" was defined as someone whose mental state was considered healthy but who had either complained of memory loss or had suffered objective memory loss.

    The researchers used existing data for 1, 062 people between the ages of 55 and 90 that had been recorded over a 12-year period. The data included brain scans, which the researchers used to look for visual signs of reduced glucose uptake（葡萄糖吸收）.It is an objective marker of the sort of reduced brain function that goes along with AD.As expected, glucose uptake was reduced in those with AD. What the researchers also discovered was that glucose uptake was reduced in those with mild cognitive damage who also showed evidence of reduced illness awareness. Finally, the researchers found that those who had reduced illness awareness were more likely to develop AD than those without.

The Boy Made it!

    One Sunday, Nicholas, a teenager, went skiing at Sugarloaf Mountain in Maine. In the early afternoon, when he was planning to go home, a fierce snowstorm swept into the area. Unable to see far, he accidentally turned off the path. Before he knew it, Nicholas was lost, all alone! He didn't have food, water, a phone, or other supplies. He was getting colder by the minute.

    Nicholas had no idea where he was. He tried not to panic. He thought about all of the survival shows he had watched on TV. It was time to put the tips he had learned to use.
    He decided to stop skiing. There was a better chance of someone finding him if he stayed put. The first thing he did was to find shelter from the freezing wind and snow. If he didn't, his body temperature would get very low, which could quickly kill him.
    Using his skis, Nicholas built a snow cave. He gathered a huge mass of snow and dug out a hole in the middle. Then he piled branches on top of himself, like a blanket, to stay as warm as he could.
    By that evening, Nicholas was really hungry. He ate snow and drank water from a nearby stream so that his body wouldn't lose too much water. Not knowing how much longer he could last, Nicholas did the only thing he could—he huddled(蜷缩) in his cave and slept.
    The next day, Nicholas went out to look for help, but he couldn't find anyone. He followed his tracks and returned to the snow cave, because without shelter, he could die that night. On Tuesday, Nicholas went out again to find help. He had walked for about a mile when a volunteer searcher found him. After two days stuck in the snow, Nicholas was saved.
    Nicholas might not have survived this snowstorm had it not been for TV. He had often watched Grylls' survival show Man vs. Wild. That's where he learned the tips that saved his life. In each episode(一期节目) of Man vs. Wild. Grylls is abandoned in a wild area and has to find his way out.
    When Grylls heard about Nicholas' amazing deeds, he was super impressed that Nicholas had made it since he knew better than anyone how hard Nicholas had to work to stay alive.