Once a boy came to ask a fisherman how to become cleverer, because his mother always called him “foolish boy”.

    “That's easy,” answered the fisherman. “I know one way to make you become cleverer.”

    “Really?”

    “Of course. It is said a fish head is good for brain. If you eat one, you'll become cleverer indeed. Pay only three pounds for one fish head.” The boy paid him three pounds and the fisherman cut off a fish head and handed it to him.

    A raw fish head is not good—not even for a hungry boy to eat but the boy ate it up in  two gulps.

    “Do you feel anything?” asked the fisherman.

    “Not in my head,” said the boy.

    The boy lay on the ground and thought. “One whole fish costs only two pounds. I have paid him three pounds for the fish head. Why couldn't I have the whole fish for soup, a head for brain and one pound left over?” He jumped up and shouted at the fisherman. “You thief! You are fooling me!” The fisherman laughed, saying, “The fish head works now, you see.”

    Even if trees cannot walk, they are still on the move.

    In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra(冻土地带) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this, plants tend to grow horizontal(水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.

    But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all the leftover energy. these trees have started producing more seeds. This happens especially in places where the white spruce(白云杉) grows.

    White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When wind-blown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.

    New trees will provide shelters for some snow, keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperature has helped more trees grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.

    In the fall of 1985, I was a bright-eyed girl heading off to Howard University, aiming at a legal career and dreaming of sitting on a Supreme Court bench somewhere. Twenty-one years later I am still a bright-eyed dreamer and one with quite a different tale to tell.

    My grandma, an amazing woman, graduated from college at the age of 65. She was the first in our family to reach that goal. But one year after I started college, she developed cancer. I made the choice to withdraw from college to care for her. It meant that school and my personal dream would have to wait.

    Then I got married with another dream: building my family with a combination of adopted and biological children. In 1999, we adopted our first son. To lay eyes on him was fantastic－and very emotional. A year later came our second adopted boy. Then followed son No,3. In 2003, I gave birth to another boy.

    You can imagine how fully occupied I became, raising four boys under the age of 8! Our home was a complete zoo — a joyous zoo. Not surprising, I never did make it back to college fulltime. But I never gave up on the dream either. I had only one choice: to find a way. That meant taking as few as one class each semester.

    The hardest part was feeling guilty about the time I spent away from the boys. They often wanted me to stay home with them. There certainly were times I wanted to quit, but I knew I should set an example for them to follow through the rest of their lives.

    In 2007, I graduated from the University of North Carolina. It took me over 21 years to get my college degree!

    I am not special, just single-minded. It always struck me that when you're looking at a big challenge from the outside, it looks huge, but when you're in the midst of it, it just seems normal Everything you want won't arrive in your life on one day. It's a process. Remember: little steps add up to big dreams.

    I have just arrived in a country where I don't know the language, where I have no family roots and where I find myself all alone. It may sound frightening. But let me tell you a little secret: it is not.

    When you travel abroad by yourself for whatever reason—exchange program, internship, volunteering, or simply as a tourist—a new and fascinating world will open up for you. A world you would have never been able to see if you had just stayed at home.

    People from a different country are not aliens. They are simply people like you who happened to be born in another region. They have pretty much the same wishes and worries as people from your own country.

    I know that you see a lot of news on TV saying terrible things people do all the time. Your family may have spent a great deal of time telling you not to trust strangers. However, when you travel alone you will realize that people are just as good as you. Everyone is just leading their lives, working, studying and having a good time with their friends. Most people will be happy to help you and get to know you.

    Maybe in the past when you would need months to travel from one place to another, traveling could be expensive. Nowadays, the world is just so connected that it is perfectly possible to find cheap flights, accommodation for all budgets and cheap and quality food.

    You will get lost, but it's fine! I can't even count how many times I didn't know where I was going or how to find the right direction. Everything looks great on Google maps, but sometimes your phone will die or your data will end. Just calm down. Go to a store or stop someone in the street and ask! Or simply walk around and be curious.

    BBC SHOP

    Entertaining. Informing. Inspiring.

    WHAT A RELIEF!

    Delight everyone on your holiday gift list with great gifts from the BBC.

You'll earn heartfelt thanks from nature lovers for Planet Earth I&II The Complete Collection(page 41)—inspiring look at our planet's wildest, most mysterious creatures and their breathtaking home. from mystery lovers for Sherlock: Complete Seasons 1-4 and The Abominable Bride Giftset (page13)—entertaining proof that Holmes can be difficult, dangerous, accurate, and absolute funny...and from those who appreciate all things British. Delight Charles Dickens fans with Dickensian (page 7), and the new drama series with more adventures for Dickens' characters... Dinner with Dickens Cookbook (page9) with procedures for his favorite dishes... and Tom BakerReads “A Christmas poem”(page 8) for a wonderful new holiday tradition.

    THE MOMENT

    Welcome to murder, suspense, romance, robbery and clothing in this exciting historical drama! Trouble begins for Rachel Verinder the day she inherits a large diamond stolen from a Hindu temple When it disappears again, suspicion falls on Franklin Blake, the man who loves her. But what about mysterious cousin Godfrey, the housemaid with a thieving past, and doctor who experiments with opium(鸭片)？ Blake must discover the fate of the Moonstone or lose Rachel forever. A powerful tale and emotionally sudden changes, based on the first-ever English detective novel by Wikie Collins33/4hours.DVD21024:$34.99 YOUR PRICE: $27.98

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    Baked in the village of Aberlour in the Scottish Highlands, they follow a generations-old family procedure, first perfected by Joseph Walker in 1898.While the shortbread will disappear as if by magic, the tine will hold your holiday cookies and candy for many Christmases to come.

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    Both tins: 6h×43/4d.net wt 4.40z Santa 21043 $19.98

Humans act with purpose, but much is still unknown about how we become purposeful agents — that is, how we develop the ability to willfully make things happen. In a recent study to explore agency's mysterious roots, we tried to catch infants (婴儿) in the act of discovering their own agency, thereby revealing the process of agency formation.

Researchers place a baby into a cradle with a mobile suspended above. Then a scientist ties one end of a string to the mobile and the other to the infant's foot. Now if the baby moves, the toy will, too. By observing babies in this setup, scientists can watch as the infants learn and recall a simple cause-and-effect interaction: kick a foot and the mobile moves.

As predicted by the researchers, infants kicked significantly more when their foot was tethered (拴住) to the mobile than when it was not. However, when an experimenter pulled the string to make the mobile move instead, infants moved less than when the mobile was at rest. Furthermore, when we freed the babies' foot from the mobile, they kept on kicking at higher rate to make the toy respond — and were visibly frustrated when that did not happen.

Our observations also pointed to a notable pattern: The babies' initial movements consisted of twisting and pushing without clear direction. But once tethered to the mobile, the more intensely they moved, the more their attention was drawn to the effect their kicking had on it. At some point, the infants must have figured out that they had agency, thus the aimless movements became intentional action — a highly coordinated exchange between the tethered infant and the mobile.

The baby-mobile study emphasizes how understanding the relationship between an organism and its environment is essential to uncovering the origins of directed behavior. The experience of agency emerges only when an organism senses it is coupled to its environment. In this way of thinking, the interaction and relationship between the two are crucial for purpose to arise.