Life in the Clear

    Transparent animals let light pass through their bodies the same way light passes through a window. These animals typically live between the surface of the ocean and a depth of about 3,300 feet—as far as most light can reach. Most of them are extremely delicate and can be damaged by a simple touch. Sonke Johnsen, a scientist in biology, says, “These animals live through their life alone. They never touch anything unless they're eating it, or unless something is eating them.”

    And they are as clear as glass. How does an animal become see-through? It's trickier than you might think.

    The objects around you are visible because they interact with light. Light typically travels in a straight line. But some materials slow and scatter(散射) light, bouncing it away from its original path. Others absorb light, stopping it dead in its tracks. Both scattering and absorption make an object look different from other objects around it, so you can see it easily.

But a transparent object doesn't absorb or scatter light, at least not very much, Light can pass through it without bending or stopping. That means a transparent object doesn't look very different from the surrounding air or water. You don't see it —-you see the things behind it.

    To become transparent, an animal needs to keep its body from absorbing or scattering light. Living materials can stop light because they contain pigments(色素) that absorb specific colors of light. But a transparent animal doesn't have pigments, so its tissues won't absorb light. According to Johnsen, avoiding absorption is actually easy. The real challenge is preventing light from scattering.

Animals are built of many different materials—-skin, fat, and more—-and light moves through each at a different speed. Every time light moves into a material with a new speed, it bends and scatters. Transparent animals use different tricks to fight scattering. Some animals are simply very small or extremely flat. Without much tissue to scatter light, it is easier to be see—through. Others build a large, clear mass of non-living jelly-lie(果冻状的)material and spread themselves over it .

    Larger transparent animals have the biggest challenge, because they have to make all the different tissues in their bodies slow down light exactly as much as water does. They need to look uniform. But how they're doing it is still unknown. One thing is clear for these larger animals, staying transparent is an active process. When they die, they turn a non-transparent milky white.

    Children's lives have changed greatly over the last 50 years. But do they have a happier childhood than you or I did?

    It's difficult to look back on one's own childhood without some element of nostalgia (怀旧的). I have four brothers and sisters, and my memories are all about being with them. Playing board games on the living room floor, or spending days in the street with the other neighborhood children, racing up and down on our bikes, or exploring the nearby woods. My parents scarcely appear in these memories, except as providers either of meals or of severe blame after some particularly risky adventure.

    These days, in the UK at least, the nature of childhood has changed dramatically. Firstly, families are smaller, and there are far more only children. It is common for both parents to work outside the home and there is the feeling that there just isn't time to bring up a large family, or that no one could possibly afford to have more than one child. As a result, today's boys and girls spend much of their time alone. Another major change is that youngsters today tend to spend a huge amount of their free time at home, inside. More than anything this is due to the fact that parents worry far more than they used to about real or imagined dangers, so they wouldn't dream of letting their children play outside by themselves.

    Finally, the kind of toys children have and the way they play is totally different. Computer and video games have replaced the board games and more interesting activities of my childhood. The irony (令人啼笑皆非的事情) is that so many ways of playing games are called “interactive”. The fact that you can play electronic games on your own further increases the sense of loneliness felt by many young people today.

    Do these changes mean that children today have a less relaxing childhood than I had? I personally believe that they do, but perhaps every generation feels exactly the same.

    Far out in the lake was a large wooden platform(平台) on which stood an improbably high diving board- a kind of wooden Eiffel Tower. It was, I'm sure, the county's tallest wooden structure (结构) and no one had ever been known to jump from it. So it was quite a shock when our teacher, Mr. Milton, announced that he would dive off the high board that very afternoon.

    Word of his questionable plan was already spreading through town as Mr. Milton swam out to the platform. He was just a tiny, stick figure when he got there but even from such a distance the high board seemed almost to touch the clouds. Once at the top, he paced the enormously long board , then look some deep breaths and finally stood at the edge. He was going to do it.

    Several hundred people had gathered at the shore to watch. Mr. Milton stood for quite along time ;then he raised his arms, took one bounce(弹跳) and launched himself into ;perfect dive. He fell with perfect style for what seemed minutes. The crowd fell silent. But about three quarters of the way down he seemed to have second thoughts and began suddenly to panic(惊慌)，waving his arms and legs like someone having a bad dream. When he was perhaps thirty feet above the water, he gave up on waving and spread his arms and legs wide, obviously hoping that it would somehow slow his fall. It didn't. He hit the water at over six hundred miles an hour, making birds fly out of their trees three miles away. I don't think he entered the water at all. He just bounced off it, about fifteen feet back into the air. After that, he lay still on the surface , like an autumn leaf.

    He was brought to shore by two passing fishermen in a rowboat and placed on an old blanket where he spent the rest of the afternoon. Occasionally he accepted a little water, but otherwise was too shocked to speak.

    It was the best day of my life.

    That children are the hopes of our tomorrow is statement that is repeated time and again. And it is an axiom(格言); they are our pillars of the coming time. But then do we train them into becoming healthy human beings?

    Healthy human beings here are not meant the physical well being, but the good human being, that is, one with virtues and values keeps them in the state of working towards the benefit of humanity.

    How can children absorb within themselves the virtues and values? Well, this is the primary responsibility of parents and other immediate family members, followed by school authorities. The values and virtues of an individual is sown in their childhood and as they grow up.

    Depending on the way we bring up our children, we decide our own future. It is vital that in the formative years we give them quality time and attention. We teach them to discriminate between the good, bad and the ugly. We have to teach them use positive emotive like love and compassion and teach them actions of kindness and generosity. At the same time we have to help them do away with the negatives of hatred, anger, jealousy, selfishness, etc.

    Your child is like a plant. You sow the seeds and also reap the benefits of its growth and development. First and foremost you as a parent have to realize your responsibility in nurturing a child to grow into a good human being. And it is just not up to anyone of the parents, but both together to inculcate(谆谆教诲)the values and virtues into your child.

    One of the hardest parts of living abroad is being away from your loved ones, especially your family. While my friends are so important to me, I've personally found it more difficult being away from family.

    However, I was fortunate that my mum and sister recently found the time to see me. Both my sister and I have major birthdays this year as she's tuming 18 and I'll be 21. My sister is a very big music fan and this year, I created my status as the best older sister by keeping an eye out for music concerts in Paris. In our home town of Leicester, we don't regularly get many well-known artists playing in our city. But in Paris, I managed to get the best 18th birthday present of all: tickets for all three of us to see my sister's favorite American rapper, Angel Haze.

    I will try to visit for my sister's actual birthday in June, the chance for my sister and my mum to visit became a birthday treat. The experience of finding our way together to the concert or getting to show them around the Paris sites such as the Eiffel Tower,the Arc du Triomphe and even my favorite ice cream place,Amorino, was an amazing memory for us all !Despite the fact that I felt the slight pressure to make sure the weekend went smoothly,even the heavy rain failed to dampen our mood.

    Therefore, while it can be difficult being away from home and potentially missing big family moments,there are ways to avoid the sadness and find a way to make the best of your situation to create an unforgettable memory. Just like the continuing rain while we went up the Eiffel tower, every cloud has a silver lining, because then we got the funniest photos ever!

    The Pope John XXIII Regional High School robotics team has brought about many crea-tions in its laboratories. Most of these creations have earned them prizes in their robotics leagues, articles in local media and praise from many people around the world. None of them, however, can equal to what they experienced during one of their most recent projects.

    The robotics team helped design and build an electrically during one of their most recent projects, girl during an event snonsored by the GoBabyGo program and Toyota. The goal of the disabled is to build an electncally opiated vehicle and meet the needs of a specific disabled child. After hearing about the program, the robotics team jumped on the opportunity.

    When they got to the hospital for the event，the team members joined forces with engi-neers from University of Delaware, Toyota employees and and doctors to help a girl named Jaleah.

    Using instructions provided on an iPad by GoBabyGo,they put together a plastic battery-oper-ated vehicle-one of 12 that were made at the event-that was bespoke to Jaleah. Her vehicle was a baby blue jeep that had designs from the hit Disney movie Frozen and was decorated with snowflakes (雪花)，butterflies and flowers.

    More importantly，the team rerouted the electrical system in the car so that Jaleah only needed to push a large button on the steering wheel to drive the car, giving her the freedom to move. In addition, they helped design special seating structure to keep Jaleah safely secured.

    When they completed the project, Jaleah and her parents' reactions took the PJ robotics members by surprise.“ It was really satisfying,” PJ junior Austin Fett said. “When she was riding it, she was having so much fun. It was a great feeling. ”

    While they are looking forward to their future projects and competitions in the FIRST Technology Challenge league, the robotics team will always remember the days they helped Jaleah become a mobile kid.

    “We made something that she will love and use forever,” PJ senior Keith Johnson said.