In France, a man walks on what can only be described as a human-sized hamster wheel. The wheel moves around and around, as the man keeps walking. What is he doing? He is lifting a heavy object to the top of a tower the same way workers moved such objects 800 years ago.

    In the 13th century, workers did not have the 100-meter tall cranes they now use to build tall buildings. So they had to be creative and come up with simple machines to get their work done.

    The man on the large wheel is walking at a reasonable speed. The wheel turns and pulls a rope connected to a pulley(滑轮)at the top of the tower. Another rope tied to the pulley lifts supplies from the ground.

    This is just one way skilled craftsmen arc building a 13th-century castle without using modern tools. Crew have been working on the castle since 1997. It is being built in the Burgundy area of central France. Organizers expect the work to last another 10 to 15 years. That means it will take close to 30 years to finish the project.

    The crew are making progress at about half the speed of the workers from 800 years ago. That is because many of them are accustomed to using modern tools. When the crew use heavy chisels(凿子）and hammers to break rock, as they did hundreds of years ago, they are learning as they go. The goal of the project is to learn more about old building techniques in case they might be of use today.

    Clement Guerard, 44,is a stonemason; he cuts and builds with stone. He has been working on the tower for 17 years. He said one way he is able to work on something like this for so long is by forgetting “some of the pace of modern life", he is able to adapt to working by hand.

    Sonya and her family have been homeless since she was 3 years old. Over the years, they have moved more than 15times to different shelters around New York City. Moving around was hard on Sonya。At school, Sonya hid her homeless from teachers and other students. She didn't want to be treated differently from other kids.

    In sixth grade, Sonya discovered a way to deal with some of her stress. She began studying dance at her middle school. “IT was a way for me to express myself, instead of just holding everything in,”she explains. Soon, Sonya auditioned（试演）for a summer dance camp run by Alvin Alley, a famous dance company. She was accepted. “I was excited,”says Sonya.

    Dancing became an even more important part of Sonya's life in high school. But things were not going well for Sonya at school. Each time her family moved to a new shelter, Sonya often took care of her younger sisters and brothers. She helped them get ready in the morning and took them to school. They would be on time, but Sonya would be late.

    Worrying about her family kept Sonya from thinking about her own future. That changed the summer after 11^th grade. Sonya learned she would have to go to summer school to graduate. She became determined to succeed, no matter what. “It was a wake-up call,”she says.“I had to focus on school and on myself.”

    Sonya made up the work that she had missed, and finally graduated from high school. No one in her family had gone to college before. But in September 2015, Sonya enrolled in the State University of New York at Potsdam. She plans to become a doctor for kids and to teach dance to children who have disabilities.

    Recently I started discovering one thing which amazes me so much: how perfect everything is in the world we are living in! Just look, all day long we are busy working and just when we get tired, the night comes in, so we may sleep and relax. One day we may enjoy the bright sun and another day, when we get tired of the sun, the rain pours down.

    A few months ago I was so happy with my life. Later, I got tired from the happiness. I wished I would have some trial to strengthen my character and learn something new about life. I got what I wanted. Shortly after I got severe angina (心绞痛), so I had to stay home for several weeks. During this period I had time to rethink my life and discover myself. The lessons were terrific, but I felt grateful for this time.

    Another example: I have a friend, who primarily thinks about having fun. Once I thought why we get along well with each other and what in me attracts her. A couple of days ago I found the answer. I like calmness and silence. She likes noise and agitation (热闹). We attract each other just to balance ourselves, in other words, to give some drive to me and some calmness to her!

    So remember that the universe is so wise that it will try to balance you. As for me, this is perfect because extremes create suffering: too much food – too little food, too cold – too hot, too much fun – too little fun.

    Anaya Elick was born without hands – she has stubs（残端）where most people's wrists begin.

    To hold a pencil, she must balance it between her wrists, then use her arms to push it along the page. But that didn't stop her from winning a national handwriting contest when she was in first grade.

    In the two years since, she has taken on greater challenges. Last week, she won another national handwriting contest, this one for cursive（草书）. And by all accounts from her teachers at Greenbrier Christian Academy, she has become an accomplished artist.

    Anaya isn't one to boast about her successes. She unwillingly says they make her proud but adds that they come from “lots of practice.”

    Her friends at school said, “She inspires everybody by what she does and how she does it” child to fail, and raising one who was born with a disability can heighten that protective instinct.

    Before Anaya was born, doctors knew about her condition, although not its cause. Other than having no hands, she is a regular 9-year-old girl.

    Anaya succeeds because she is not afraid to fail, Middleton said. The two began practicing cursive last year, when Anaya was in second grade. She struggled sometimes, because unlike traditional penmanship, which allows for breaks after each letter, cursive words are written straight through – and added effort for someone who must balance rather than hold the pencil.

    Middleton could see her daughter thinking through the challenge, figuring out how she could do better. She'd get frustrated at times, but she never hesitated to do things as often as it took to get them right.

    “I don't think I've ever heard Anaya say I can't do something,” Middleton said.

    That attitude carries over to her other interests.

    Recently, Anaya and her classmates sat in Cheryl Leader's art room, working on an exercise. The goal was to get them thinking about different concepts, like color combinations and how an image can be formed by fully coloring inside straight and diagonal lines.

    Last Saturday on the way to the mall, two children, a boy and a girl, came running towards me with bottles in their hands, asking if I wanted bottled water. It was a surprising gesture. I was wondering if they were doing fund-raising. I knelt and asked them where their parents were and how much a bottle of water cost. Then two adult women came up to me explaining what the children were doing. “We are teaching the children to give without anything in return. We are teaching people to accept without giving in return.”

    Two mothers had bought bottled water and placed a sticker on all bottles with five different quotes (引述):

    ⒈Smile at everyone. You'll never know when someone may need it.

    ⒉If Plan A does not work, there are 25 more letters in the alphabet.

    ⒊Have a thirst for life. Every day is filled with possibilities.

    ⒋In your thirst for knowledge, be sure you don't drown in all the information.

    ⒌Dig your well before you're thirsty.

    The bottle I have has quoted No.5. A sudden change of attitude opened up between me, the mothers and the children. We are no longer strangers to each other. We were having such a great time chatting and I ended up helping them give away the rest of the bottled water.

    One young lady was so thankful that she happily accepted the water and said it was the best thing that happened to her all day since she had a bad day at work. A man refused and walked away saying “No, thanks”. A couple kept on bowing to us in gratitude. When it was all done, the children and I were giving each other high-five. It was so remuch fun. I think I had more fun doing this than the mothers and the children.

Video calls are a common occurrence, but have you imagined being able to touch the person on the other end of the line? Scientists are making this a reality.

Researchers at the University of new South Wales, Australia have invented a soft skin stretch device (SSD). A haptic device that can recreate the sense of touch. Haptic technology mimics the experience of touch by stimulating localized areas of the skin in ways that are similar to what is felt in the real world, through force, vibration or motion.

Vibration is the most common haptic technology today and has been built into many electronic devices such as one attached to the back of the trackpad (触摸板) in laptops, which simulates a button clicking. However, haptic feedback with vibration becomes less sensitive when used continuously. The existing technology also has great difficulty recreating the sense of touch with objects in virtual environments or located remotely. According to Mai Thanh Thai, lead author of the study.

The new technology overcomes issues with existing haptic devices. The research team introduced a novel method to recreate the sense of touch through a soft artificial "muscles".

"Our three-way directional skin stretch device, built into the fingertips of the wearable glove we also created is like wearing a second skin-- its soft stretchable and mimics the sense of touch-- and will enable new forms of haptic communication to enhance everyday activities" said Thanh Nho Do, senior author of the study.

Imagine you are at home and you call your friend who is in Australia. You wear a haptic glove with the SSDs, and your friends also wears a glove with integrated 3D force sensors. If your friend picks up an object, it will physically press against your friend's fingers. And their glove with 3D force sensors will measure with interactions. The force signals can be sent to your glove so your device will generate the same 3D forces. Making you experience the same sense of touch as your friend.

The haptic devices could be applied in various situations, allowing users to feel objects inside a virtual world or at a distance. It could also be used in medical practices. Doctors can feel a patient's organ tissues. With surgical tools without touching them.