Japanese researchers say they have developed a new type of glass that can heal itself from cracks and breaks. Glass made from a low weight polymer (聚合物) called “polyether-thioureas” can heal breaks when pressed together by hand without the need for high heat to melt the material.

    The research, published in Science, by researchers led by Professor Takuzo Aida from the University of Tokyo, promises healable glass that could potentially be used in phone screens and other fragile (易碎的) devices, which they say are an important challenge for sustainable (可持续的) societies.

    While self-healing rubber and plastics have already been developed, the researchers said that the new material was the first hard substance of its kind that can be healed at room temperature. The new polymer glass is “highly robust mechanically yet can readily be repaired by compression (压紧) at broken surfaces”.

The characteristics of the polyether-thioureas glass were discovered by accident by a graduate school student named Yu Yanagisawa, who was preparing the material as a glue. Yanagisawa found that when the surface of the polymer was cut, the edges would adhere to each other, healing to form a strong sheet after being manually compressed for 30 seconds at 21℃. Further experiments found that the healed material regained its original strength after a couple of hours.

    Yanagisawa told NHK that he didn't believe the results at first and repeated his experiments several times to confirm the finding. He said, “I hope the repairable glass becomes a new environment-friendly material that avoids the need to be thrown away if broken.”

    This is not the first time a polymer has been suggested as a healable screen for devices such as smartphones. Researchers at the University of California suggested the use of polymer that could stretch to 50 times its original size and heal breaks within 24 hours.

    Smartphone manufacturers have already used self-healing materials in devices. LG's G Flex 2 shipped in 2016 with a coating on its back was capable of healing minor scratches over time, although failed to completely repair heavier damage.

    According to the research conducted by repair firm iMend, over 21% of UK smartphone users were living with a broken screen, with smashed displays being one of the biggest issues alongside poor battery life.

    No one can deny that buttons are an important clothing device. But, can they rise to the level of art? Organizers of an exhibit in New York City think so.

    Peter Souleo Wright organized “The Button Show” at Rush Arts Gallery in the Chelsea neighborhood of Manhattan. Eleven artists used the small, ordinary objects to create sculptures, portraits and wearable art. Some of the works are political, some are personal and others are just fun.

    Wright said each artist reimagines and repurposes the buttons to make art. “What I tried to do with this show,” he said, “was to look at artists who were promoting that level of craft.”

    He said he wanted the button art to be comparable to a painting “because of the amount of detail and precision in the work.”

    Artist Beau McCall produced “A Harlem Hangover”. It looks like a wine bottle that fell over on a table. A stream of connected red buttons hand over the side, like wine flowing down. Similar red button form a small pool on the floor.

    McCall layers buttons of different shapes and sizes to create the bottle. The stitching that holds them together is also part of the artistic design.

    For San Francisco-based artist Lisa Kokin, buttons are highly personal. After her father died in 2001, she created a portrait of him using only buttons. That memorial to her father led to other button portraits, including those of activists Rosa Parks and Cesar Chavez.

    Others use buttons for details. Artist Amalia Amaki of Tuscaloosa, Alabama, placed them on and around old photographs. Los Angeles artist Camilla Taylor attached buttons to three large sculptures that look like headless animals with long, narrow legs.

    “The Button Show” ends at March 12. The Rush Philanthropic Arts Foundation paid for the exhibition. The foundation was created in 1995 by the Simmons brothers: artist Danny, hip-hop producer Russell and rapper Rev. Run. The foundation seeks to bring the arts to urban youth and to provide support for new artists.

    Violette Childe, 67, is a dining companion who helps serve patients lunches. The role was introduced ten years ago by a dietitian concerning that some patients were not eating their meals.

    "Many of our patients are elderly and can be confused by the noisy, busy environment of the hospital and so won't focus on eating." explains Yvonne Donglas-Morris, head of volunteering, who oversees the activities of all 528 of the trusty volunteers. "Staff are busy with the clinical side of things, so the dining companions were introduced. They will assist the patients and encourage them to eat."

    Violette, a retired library manager, has been helping out for six years. "It makes me feel a bit more complete," she says simply. "Helping with the meals frees up the nurses to get on with other things. I believe in being a part of the community and this hospital is part of my community."

    Another key role is played by the discharge volunteers, who offer support to the elderly, especially those aged 70 and over-leaving hospital to return to an empty home. The team has a budget of ￡10 per person and will pop to the shops and buy milk, bread and a meal to tide them over for the first few hours. They then call the patients regularly, for as long as they need, to check how they are getting on and if they need extra support.

    The volunteers in Kingston work from a dedicated office-a small room in one of the buildings on the hospital grounds, where a Christmas tree decorated with baubles (小饰物) bearing the faces of volunteers sits in the corner. "All the volunteers come and gather here, it gets very busy at times," smiles Nicola Hutin, 67, a discharge support volunteer. A mother of two, and grandmother of four, she was a membership coordinator (协调员) for a trade association until she retired, and has since volunteered at the hospital one morning a week for 18 months.

    To make sure that you enjoy your visit to the Hamper Hot Springs(泉) and that you are safe during your visit, please take time to read the following:

    Do not place your head under the hot water, because it may be bad for your health.

    Do not run around because the floors may be slippery.

    Do not leave your children alone.

    Do not leave your things about. Just ask one of our workers look after your things.

    Do not eat or drink anything in the area because we want to keep here clean. There is a place for you to eat and have soft drinks when you want to have a rest.

    Do not bring into the area anything made of glass, because it maybe easily broken when you fall.

    Do not bring any hard drinks into the area.

    Do not smoke in the area.

    Do not stay in the sunlight for too long.

    We hope that you will enjoy your visit here.

    When men and women take personality tests, some of the old Mars-Venus stereotypes(定式)keep reappearing. On average, women are more cooperative, kind, cautious and emotionally enthusiastic. Men tend to be more competitive, confident, rude and emotionally flat. Clear differences appear in early childhood and never disappear.

    What's not clear is the origin of these differences. Evolutionary psychologists think that these are natural features from ancient hunters and gatherers. Another school of psychologists argues that both sexes' personalities have been shaped by traditional social roles, and that personality differences will shrink as women spend less time taking care of children and more time in jobs outside the home.

    To test these hypotheses(假设), a series of research teams have repeatedly analyzed personality tests taken by men and women in more than 60 countries around the world. For evolutionary psychologists, the bad news is that the size of the gender gap in personality varies among cultures. For social-role psychologists, the bad news is that the change is going in the wrong direction. It looks as if personality differences between men and women are smaller in traditional cultures like India's or Zimbabwe's than in the Netherlands or the United States. A husband and a stay-at-home wife in a patriarchal(男权的)Botswanan clan(部族)seem to be more alike than a working couple in Denmark or France. The more Venus and Mars have equal rights and similar jobs, the more their personalities seem to separate.

    These findings are so unbelievable that some researchers have argued they must be due to cross-cultural problems with the personality tests. But according to new data from 40.000 men and women on six continents, David P. Schmitt and his colleagues conclude that the trends are real. Dr. Schmitt, a psychologist at Bradley University in Illinois and the director of the International Sexuality Description Project, suggests that as wealthy modern societies level(使平等)the barriers between women and men, some ancient internal differences are being developed.

    The biggest changes recorded by the researchers involve the personalities of men, not women.

    Men in traditional agricultural societies and poorer countries seem more cautious and anxious, less confident and less competitive than men in the most progressive and rich countries of Europe and North America.

    To explain these differences, Dr. Schmitt and his partners from Austria and Estonia point to the hardships of life in poorer countries. They note that in some other species, environmental stress tends to extremely affect the larger sex. And, they say, there are examples of stress decreasing biological sex differences in humans.

Small words may help you beat stress and improve your relationships. Use these tips to teach yourself a helpful and useful vocabulary.

I get to

"Many of us begin our day with the phrase 'I have to'," says Catherine Grace O'Connell, a self-development expert. "Changing this to 'I get to' has the possibility to change the way our day goes. "Even if you may not be happy about going to work or cooking dinner, saying that you "get to" do those things changes your attention to the positive aspects of those things.

Thank you

A lot of research has been done on why people — especially women — often don't accept compliments smoothly. Language in Society found that women only accepted compliments 40 percent of the time, and Harvard Business Review found that almost 70 percent of people connected receiving compliments with a little shame or embarrassment. Does this sound familiar? She says, "I love that dress." You say, "Oh this? I've had it for years." Or," You think? I'm not crazy about the color." We often demean (贬低) ourselves while doing this. A better way to respond: Look the person in the eye and simply say, "Thank you."

Not yet

Adding "yet" to the end of your words, especially when talking about abilities and goals. is a small but good way to change your attitude to life. "Add the word 'yet' to limiting comments," suggests Kyndall Bennett, another self-development expert. "When we do this, we allow ourselves to accept the limiting thoughts as truths," Bennett says. "Examples of this would be like, 'I can't speak a second language... yet' and 'I don't know how to run my own business... yet.'" This works for everything from weight loss to relationships; it's a way to add a certain optimism to your words.